If you’ve been trying to conceive for any length of time (or at least thinking about it for any length of time) you have probably heard of LH strips (AKA OPKs, LH test, ovulation test, luteinizing hormone tests, ovulation predictor kits). LH strips are a pretty standard tool in the TTC communities and are often recommended to help improve odds of getting pregnant in any given cycle. But the way you use LH strips, whether correctly or incorrectly, could make or break your TTC efforts. This article will help you avoid making this common mistake.

What are LH strips?

LH strips are home urine tests that can be used to identify the surge of luteinizing hormone (LH). LH strips, when used correctly, predict ovulation to help couples who are trying to conceive by improving the precision of their efforts. Conception really only is possible during a six-ish day window of the menstrual cycle, corresponding to the five days leading up to and including ovulation, plus the day after. [Learn more about fertility, hormones, and the fertile window in my book, Go with Your Flow.] Contrary to most Sex Ed classes (or what is exemplified in the movie Mean Girls) a single sexual encounter is actually less likely to result in pregnancy then it is to cause it, statistically speaking. 

Knowing this, most cycle tracking apps offer a predicted fertile window to aid users in identifying the days of the month when they are likely to conceive from intercourse. Now, of course, these apps make their predictions based on averages (which ironically do not actually reflect the average woman) that assume a luteal phase length of 14 days, with ovulation occurring approximately mid-cycle.

To give you a few examples:

• For a woman with an average cycle length of 28 days, her app would predict ovulation on day 14, with a 14-day luteal phase thereafter
• A woman with a 35 day cycle would receive a prediction for ovulation on cycle day 21 (again with a 14-day luteal phase)
• A woman with a 24 day cycle would receive a prediction for ovulation on cycle day 10 (based on a 14-day assumed luteal phase)

While any of these scenarios could be true for a given woman, it is also true (and especially important to note) that countless other variations are also possible.

Why

Because not all luteal phases are 14 days in length.

Let’s go back to the “textbook” 28-day cycle for a moment: this woman may have:

• A 14-day luteal phase with ovulation on day 14
• But she just as easily may have a 12-day luteal phase with ovulation on day 16.
• Or even the somewhat atypical 15 (or more) day luteal phase with ovulation on day 13.
• She also could have a less-optimal but still potentially fertile 8-day luteal phase with ovulation on day 20. 

Even within just this 7 day variation, you can see easily that miscalculating the day of ovulation could mean completely missing the entire fertile window. Yikes.

So, instead of relying on the law of averages and missing the important detail of individual biology, scientists have come up with easy, at-home ways for tracking ovulation, based on the hormonal dance that takes place throughout a menstrual cycle. Ergo, LH strips or “ovulation predictor kits.”

How Do LH Strips Work?

In order to understand the lowly LH strip, we first need to understand it’s namesake hormone, LH–or luteinizing hormone.

In a nutshell, luteinizing hormone is a chemical signal sent by the brain to tell the ovary to release an egg.

The menstrual cycle is divided into two parts (which are, as we already learned, not necessarily halves) by ovulation, marking the transition point between the two.

The first part of the cycle, called the follicular phase is all about the development of an ovarian follicle (AKA egg) which bursts open during the event of ovulation. If a sperm is there, ready and waiting, when this occurs, fertilization and subsequent conception could theoretically occur. (Note: It goes without saying that many other factors are involved when determining whether or not pregnancy occurs, but those are beyond the scope of this article.) 

An Overview of Ovulation

During the follicular phase, the brain releases FSH, or follicle stimulating hormone, to facilitate maturation of the egg. As the egg matures, it produces increasing levels of estrogen, which the brain monitors. In addition to thickening and developing the uterine lining to prepare for a possible pregnancy (or period), this rising estrogen level serves as a communication signal to the brain to keep the nervous system in the loop about the status of the egg and it’s development. Once estrogen levels reach a high enough point, the brain then responds with its own signal (LH) to trigger ovulation.

After the follicle releases its egg, it then transforms into a progesterone-producing gland called the corpus luteum, which serves as the namesake for the second part of the cycle: the luteal phase. 

In reality, LH is produced at least a little bit every day of the cycle, even when menstruating. However, the key differentiating factor between “everyday LH” and the LH surge is the tremendous increase in amount of LH being released in any given moment. For younger women, the daily average LH level may be less than 1.0 mIU/mL, though for someone who is perimenopausal, it may fall into the tens-range. With regards to the brain-ovary line of communication, it’s not so much the actual numerical value of LH as much as it is the magnitude of change. To trigger ovulation typically LH levels must rise by a factor of 10, but for some people it is much more than this. It is not uncommon for LH levels to exceed 100 mIU/mL at the peak of the surge.

LH levels may also be high at a baseline in women with PMOS (formerly named PCOS) because of dysregulated estrogen signaling from polycystic ovaries. Both in the case of PCOS/PMOS and perimenopause, these slightly higher baseline LH levels may result in the rupture of more than one follicle at a time leading to a multiples pregnancy. This is why fraternal twins are statistically more common in women of older age and in women who have PCOS/PMOS. 

The Confusion About LH Strip Timing

Because LH starts to rise shortly before the release of the egg, and because conception is most likely if sperm are already ready and waiting in the fallopian tube at the time of ovulation, studies have identified that the most fertile days-–or the days of the cycle on which conception is most likely–-do not correspond to the day of ovulation itself, but rather to the day prior, and even the day before that. This allows sperm to make their way through the reproductive tract, undergo the capacitation process (which basically is just a fancy term for saying the sperm reaches its own peak maturity, which takes about 10 hours), and be ready to greet the egg when she make her arrival. 

To use an LH strip, a woman simply collects a urine sample, dips the test strip in the urine, and then waits a few minutes during which the LH present in her urine reacts with dye and adheres to a small line of antibody printed on the strip. Like a pregnancy test, LH strips also have a control line which is always dark in color. However, the key difference between a pregnancy test and an LH strip is the fact that LH is always present (whereas the pregnancy hormone hCG is not.) So, with an LH strip, a pale pink test line indicates a negative whereas a dark pink test line (which is as dark as, or darker than the control line) indicates a positive. 

But here’s the catch… LH surges for most women last multiple days. (Studies show an average of 4.8 duration.) Typically over this timeframe, the LH levels rise rapidly, peak, and then fall back down to baseline. While the actual length of the LH surge varies from woman to woman, the key factor here when predicting ovulation is to pay attention to the beginning of the LH surge rather than the peak. It’s the dramatic rising nature of LH that triggers ovulation, not the absolute maximum (as we have already discussed that the peak itself can vary in magnitude from woman to woman, as well as throughout a woman’s life, depending on the season of her fertility).

To flush this out a little bit more:

• One woman might have a 4-day LH surge with the peak occurring at the 48-hour mark
• Another woman might have a 1-day LH surge with the peak occurring at the 12 hour mark

Although the day of the peak itself varies in this scenario by over a day and a half, the important thing is that the beginning of the surge falls on the same day for both women. Because ovulation occurs roughly 12 to 36 hours after the start of the surge, both of these women would have ovulation happening on the same day. But for the first woman, her LH surge didn’t peak until after she actually ovulated. 

The real kicker is that this, statistically speaking, is the norm:

Medical researchers have found that for roughly 94% of ovulating women, LH peaked 1.2 days after ovulation already occurred. (Study link)

This means that if you are relying on the peak day, meaning the day that your LH strip is the darkest rather than the first day that you get a positive, and you are timing, your TTC efforts according to this, there is a very good chance that you will not be having sex until after ovulation has come and gone. Which means you aren’t going to get pregnant even if you have a perfectly healthy egg and a perfectly healthy sperm. (Chances of conception on the day after ovulation are 5% or less.)

Now this is an area of confusion that I often see among patients, in my real life conversations, and online. While many LH strips delineate the first positive day as being of highest importance in their instructions, the whole thing gets a little bit confusing because the test strips don’t provide numerical values; they simply use an analog, observation-based indicator. For women who are new to using LH strips, the color gradient can be kind of confusing. 

But let’s say you are among the women who know to count from the day of the first positive test. Well, because of the whole individual variation principle, and because of the variation among test sensitivity on LH strips from different manufacturers, you still might accidentally be missing the start of your LH surge. Here’s why…

How LH Strips Work 

I touched on this a little bit earlier, but to go into a bit more detail:

In an LH strip assay, urine flows across the strip and carries LH molecules toward antibodies attached to colored particles. The LH binds to these color-labeled antibodies, forming pink LH–antibody complexes. These complexes continue moving until they reach the test line, where another set of antibodies captures them. The accumulated colored particles produce the visible test line, with more LH generally producing a darker line. A separate control line confirms that the sample flowed correctly and the assay functioned properly.

Just like pregnancy test, which come indifferent sensitivity levels (i.e. 6.3 mIU/mL for the First Response Early Result compared to 25 mIU/mL for most standard tests and “internet cheapies”) LH strips can come in different sensitivity levels, generally ranging between 10 and 40 mIU/mL. An LH strip with a lower detection limit. (i.e. 10 mIU/mL) can pick up on lower level levels of LH hormone in the urine and will provide a brighter or darker test line. Meanwhile, an LH strip with a lower sensitivity. (i.e. 40 mIU/mL) will pick up LH in urine only when it has a higher level. Therefore, the same concentration of LH in the same urine sample would show up differently on these two tests: a darker line on the higher sensitivity LH strip (10 mIU/mL) and a lighter line on the lower sensitivity LH strip (40 mIU/mL).

If you are somebody who has a generally lower LH level and a comparatively lower peak, LH strips are going to show up lighter overall than someone who has a generally higher LH level. If you are using a high sensitivity test, this shouldn’t be a problem as it’s going to show test lines of the appropriate darkness and identify the beginning of your surge without issue. Like anyone else, your line will get darker as you reach the peak–but as we have already covered, it is the beginning of the surge that matters the most. This means that for the high sensitivity (10 mIU/mL) LH strip, the test line is equivalent in shade to the control line. But sometime thereafter, the test line would get darker than the control line (around your peak). However, if you were to use a lower sensitivity LH strip (i.e. 40 mIU/mL), your test line might not be dark enough at the start of your surge to indicate a positive test (as identified by a test line of equivalent darkness to the control line) even though, biologically speaking, the LH surge has started. 

In other words, you might not see a positive until you reach the peak of your LH surge which–if you are like the 94% of women in the world, is 1.2 days after ovulation rather than 12 to 36 hours before.

Understanding LH Strips in Real Life

Let’s take a look at this chart made using an Inito fertility monitor, which provides numerical data for all four fertility hormones (LH, estrogen, FSH and PdG, which represents progesterone).

As you can see on this chart, the purple line (LH) has risen dramatically from baseline levels. (This isn’t evident in the photo, but the day prior, the LH level was 0.08 mIU/mL). Having risen to 3.14 mIU/mL, it increased by several orders of magnitude, indicating the beginning of the LH surge. This indicates that ovulation will occur within 12-36 hours.

Now, let’s compare that same test to a standard, analog, over-the-counter LH strip:

The LH strip at the top of this photo was taken on the same day, with the same urine sample as the Inito reading. According to the definition of “positive” being the test line as dark as the control, this test would not be considered positive.

But we know that it is, because of the several days of preceding data identified with the Inito monitor.

Now let’s move on to the next day in this cycle:

On this next day, the Inito fertility monitor identified an LH level of 19.37 mIU/mL (corresponding to the peak of the surge) and the standard, over-the-counter LH strip turned positive (as evidenced by the bottom strip in the photo on the right, where you can also see the old, dried out strip from the day prior for comparison). The Inito identified the start of the LH surge on cycle day 12, whereas the OTC LH strip was negative. In reality, ovulation occurred sometime thereafter, and was likely complete by the time the LH surge reached its peak on day 13. The OTC LH strip did not identify a positive until cycle day 13, but as we know from Inito, ovulation had already likely occurred.

Here’s another example with Inito. In this cycle, the LH surge was identified on cycle day 16, with both the peak and the first positive taking place on the same day. In this case, the standard OTC test strip would be positive too.

Do you see the problem?

In short, standard, over-the-counter LH strips are great if you’re someone with a generally high LH level, but they may miss the start of the surge for women with lower levels (or more dilute urine). Missing the start of the surge by just one day could mean missing the day of ovulation altogether.

Of course, the obvious way around this is to make sure that you’re having intercourse (or, as it’s more commonly referred to on the online forums, “baby dancing”) daily throughout your fertile window. (If you don’t know when that is, I would suggest starting as soon as your period ends and continuing until you’re sure you’ve ovulated, whether via monitoring cervical mucus, basal body temperature, or with a device like Inito.)

Alternatively, you could check the sensitivity of your LH strips.

LH strips come with different sensitivity levels. When in doubt, use a high-sensitivity strip. Here are a few options:

• The Inito Fertility Monitor, which provides numerical data up to two tenths of a decimal (0.01 mIU/mL) for LH, plus the other 3 fertility hormones
• PreMom Quantitative Ovulation Predictor Kit and LH Strips which range from 0-65 mIU/mL
• Clearblue Advanced Digital Ovulation Test, which is sensitive to 40 mIU/mL
• Easy @ Home LH Strips, which observe 25-30 mIU/mL

The Bottom Line on LH Strips

If you’re using LH strips to time conception, don’t wait for the darkest test line to start trying. Pay attention to your month-to-month averages, and make sure you’re TTC well before your LH strips show a positive. View the LH positive as a signal for when you can stop trying (a few days after your positive) rather than a signal to start. Because a standard LH strip may miss the earliest part of your surge, consider testing more frequently as you approach your fertile window, and choose a more sensitive or quantitative test if your strips tend to turn positive late.

Most importantly, don’t put all your timing eggs in one hormonal basket: combine LH testing with cervical mucus, cycle patterns, or another method of confirming ovulation. The goal isn’t to perfectly predict the moment the egg is released, but to make sure sperm are already there waiting when it happens.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

The post Are You Using LH Strips Wrong? appeared first on Dr. Alexandra MacKillop.

Early awareness of signs of pregnancy before missed period depends on pattern recognition rather than a single symptom. It’s common to have one of these signs or symptoms at nearly any time throughout the month. However, when many occur at once during your two-week-wait, you should pay attention—though of course you will still need to take a test to confirm.

Symptoms-Related Signs of Pregnancy Before Missed Periods

1. Tender Breasts

Breast tenderness ranks among the most reported signs of pregnancy before missed periods. Rising progesterone and estrogen increase blood flow and glandular activity within breast tissue, leading to fullness, sensitivity, or a heavy sensation. Observation requires no tools, only awareness of changes that differ from a typical premenstrual pattern. In other words, if you don’t normally experience breast tenderness before your period but this month you do, pay attention. It could be pregnancy. Other explanations include luteal phase progesterone surges, high prolactin from stress, caffeine excess, or a new exercise routine.

• Research Brief: 76% of pregnant women experience breast pain or tenderness during the first trimester, whereas research on US women noted that only 69% experience it as a PMS symptom.

2. Mood Changes (Atypical for You)

Mood shifts often appear early among signs of pregnancy before missed period. Neurotransmitter signaling responds quickly to progesterone metabolites, influencing emotional processing, irritability, tearfulness or just a greater overall emotional sensitivity. One good way to identify if changes in mood could be a sign of pregnancy is by tracking mood daily through journaling. Mood changes are common during pregnancy, but if you notice a change in the intensity or type of moods you experience, it could be a sign to pay attention to. Other causes of mood variation include PMS, sleep disruption, blood sugar instability, or psychosocial stress. For most of us, our moods change day-to-day. However, a pattern that feels distinctly different from prior cycles carries more weight.

• Research Brief: A large international study showed that up to 64% of women experience mood changes in the premenstrual period. In contrast, a global study revealed that the prevalence of depression, anxiety and stress in the first trimester averages about 27%. Depending on your individual situation, a lack of mood swings in the premenstrual window when you usually have them may be more of a flag for possible pregnancy.

3. Vivid Dreams

Intensified or unusually vivid dreams frequently accompany signs of pregnancy before missed period. High levels of progesterone alter sleep architecture, increasing REM density and dream recall. Noticing this change involves subjective reporting rather than measurement. Relative accuracy stays low to moderate. Similar dream changes follow melatonin disruption, magnesium deficiency (or supplementation), late-night eating, or anxiety.

• Research Brief: The research here is somewhat limited, so we need to draw some extended lines. But here’s what we know: across both genders, about 54% of people report frequently recalling their dreams. On the other hand, up to 91% of pregnant women report dream recall. This may be due to hormonal reasons, a lack of REM sleep, interrupted sleep, among others.

4. Cramping and Spotting

Mild uterine cramping or light spotting often reflects implantation and ranks among classic signs of pregnancy before missed periods. Implantation typically occurs 6–10 days after ovulation, triggering localized inflammation and capillary disruption. That being said, many women do report cramping or spotting before their periods. “Implantation bleeding” is typically light pink or brown spotting that resolves quickly, and tends not to be bright red. Premenstraul bleeding gets progressively heavier. Cramping when you don’t usually experience it before your period (or during) is certainly something to pay attention to. That being said, women with adenomyosis or endometriosis are more likely to experience cramping during times of the month when they aren’t actively bleeding. Other causes of bleeding include luteal phase spotting from low progesterone, cervical irritation, or ovulation-related bleeding.

• Research Brief: There actually is no research identifying the prevalence of premenstrual cramping, meaning cramping that occurs before your period starts. Regarding spotting, only roughly 6% of women report premenstrual spotting. Notably, this isn’t normal and actually should be evaluated. (More on this in my book, Go with Your Flow.) On the other hand, approximately 25% of pregnant women are reported to experience vaginal bleeding in the first trimester.

At-Home Signs of Pregnancy Before Missed Periods

1. Cervical Position

Cervical height and texture change in response to estrogen and progesterone, making this a useful at-home marker among signs of pregnancy before missed period. During early pregnancy, the cervix tends to feel higher, softer, and more closed. When performing this self-check, make sure you have clean hands and a habit of checking cervical position before the two-week-wait when trying to conceive. Ovulation, arousal, and infection also influence cervical position. Learn more about checking cervical position for fertility or as an early sign of pregnancy in my book, Go with Your Flow.

2. Increased Basal Body Temperature (BBT)

Sustained elevation in basal body temperature ranks among the most objective signs of pregnancy before missed period. Progesterone raises resting temperature after ovulation; pregnancy maintains that rise beyond 14 days. One of the best ways to identify pregnancy without a urine test is with a sustained temperature past 18 days post-ovulation. This is an extremely accurate predictive method for those who regularly track their cycles with basal body temperature. Fever, alcohol intake, poor sleep, or thyroid imbalance also elevate BBT.

• Check out this post: Basal Body Temperature 101

3. Increased Resting Heart Rate (RHR)

Resting heart rate often climbs early among signs of pregnancy before missed period due to increased metabolic demand and plasma volume expansion. Wearable devices (like a FitBit or Apple Watch) or morning pulse checks with a pulse oximeter are two ways to track RHR and identify changing patterns. A sustained increase of 3–10 beats per minute compared with baseline could be suggestive of early pregnancy. Because heart rate changes rapidly, this method is not as predictive or accurate as BBT. Dehydration, overtraining, illness, or stimulant use also raise RHR.

Lab-Based Signs of Pregnancy Before Missed Periods

Laboratory markers offer higher specificity among signs of pregnancy before missed period, especially when interpreted within clinical context. Of course the best and most accurate measure is with blood test for beta-hCG. However, I’ve accidentally identified pregnancy in patients who weren’t actively trying to get pregnant through these routine hormone blood tests.

1. High Prolactin

Prolactin supports breast development and milk production during early pregnancy. Nonpregnant reference ranges typically fall between 5–20 ng/mL. Early pregnancy often shows levels above 20–30 ng/mL. Prolactin is evaluated through a fasted morning blood test. However, high levels aren’t always a sign of pregnancy; elevated prolactin also appears with pituitary adenomas, hypothyroidism, chronic stress, or certain medications, so correlation matters.

2. Elevated Progesterone

Progesterone sustains the uterine lining and plays a central role in sustaining a pregnancy. Luteal phase values often range from 5–20 ng/mL, though they ideally sit between 12 and 20 ng/mL. Early pregnancy usually maintains levels above 10 ng/mL, often rising toward 20–40 ng/mL within weeks. Serum testing around 7–10 days post-ovulation offers useful insight. Supplement use, ovarian cysts, or timing errors also influence results.

Note: If you know you are pregnant and your progesterone level is lower than 15 ng/mL, this may be a miscarriage risk. Talk to your provider and learn more about ways to boost progesterone for fertility.

3. Rising Estrogen

Estradiol supports placental development and vascular growth, contributing to many signs of pregnancy before missed period. Typical luteal phase values range from 60–250 pg/mL. Early pregnancy often pushes levels above 200–600 pg/mL, with a steady upward trend. Blood testing works best when compared against prior cycle baselines. Estrogen dominance, ovarian hyperstimulation/cysts, or liver clearance issues also raise estradiol levels.

Putting the Signs Together

Of course, no single marker confirms pregnancy before a missed cycle unless that marker is directly testing hCG, the pregnancy hormone. However, a careful eye looking through a functional medicine lens can identify signs of pregnancy before missed periods by evaluating cycle history, nutrition, stress load, and metabolic health. When multiple symptoms, at-home observations, and lab trends align, it can help create hope during the two-week-wait.

If you’re seeking clarity, knowing the how’s and why’s behind these signs of pregnancy before your missed period empowers you to know your own body and understand your physiology on a deeper level. Tracking patterns over several cycles will improve the predictive power of these strategies and help you to know what is, and isn’t normal when deviations pop up. Of course, if you’re concerned about preconception signs and symptoms or anything else concerns you about your health, make an appointment with a trusted healthcare provider so that you don’t have to navigate your journey alone.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

Become a Patient

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Sign Me Up!

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Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

The post Signs of Pregnancy Before Missed Period: Your Complete Guide appeared first on Dr. Alexandra MacKillop.

Genetic testing often enters the fertility conversation through IVF, when embryo testing before transfer identifies certain chromosomal and inherited risks. Many couples appreciate this information, though there are potential moral concerns regarding what to do with carriers. Embryos aside, however, gene testing before pregnancy can also offer insight into a mother (or father’s) health as it applies to successful conception, miscarriage prevention, and reducing risks for the baby both before and after being born. Moreover, valuable genetic insight does not require IVF. This is great news, as most couples actively seek ways to conceive naturally and avoid invasive reproductive technology. Gene testing before pregnancy delivers similar information through the lens of functional medicine while still supporting informed and proactive choices.

Why Complete Gene Testing Before Pregnancy?

When mothers and couples have access to their genetic information, they gain clarity. This clarity pertains not just to potential diagnoses, but about long-standing health patterns and inherited vulnerabilities that may otherwise go unnoticed. Gene testing before pregnancy allows care to shift from reactive to truly preventive. Rather than waiting for complications to surface during pregnancy or delivery, couples have the opportunity to intervene early with lifestyle strategies to support their genetic, and epigenetic health.

This kind of foresight is foundational in functional medicine. Strategies like nutrient repletion, supporting detoxification pathways, reducing inflammation, and optimizing hormone balance are far more effective when they’re guided by genetics instead of reactions or guesswork. After all, you can’t correct, prevent, or support a risk you don’t yet know exists.

Who Should Consider Gene Testing Before Pregnancy?

Genetics are part of everyone’s health story. Our genes carry disease risk, but our environment and exposures throughout life, both positive and negative, influence whether those genes are expressed. High-quality nutrition, for example, can help quiet genes associated with cancer risk as well as fertility-related conditions like PCOS, endometriosis, and autoimmune disease. On the other hand, environmental toxins, chronic stress, and repeated or high-dose antibiotic use can switch these same genes on. When that happens, health can suffer in ways that directly and sometimes dramatically affect fertility.

Because of this, it’s reasonable to argue that nearly everyone can benefit from understanding their genetic health, and many may want to consider gene testing before pregnancy as part of a proactive approach to family planning.

Age adds an important layer of urgency to this conversation. After age 35, egg quality naturally declines, and genetic vulnerabilities tend to exert a stronger influence. Issues like chromosomal instability, impaired methylation, oxidative stress, and clotting tendencies can impact fertility and pregnancy outcomes more significantly. This is not just a maternal issue. Paternal genetics matter as well, since a healthy pregnancy and child require both a healthy egg and a healthy sperm.

In this post, we’ll explore five ways prospective mothers and fathers can use gene testing before pregnancy to optimize their own health and support the long-term health of their future children.

1. MTHFR (Methylenetetrahydrofolate Reductase)

One of the most commonly discussed genetic findings in preconception care involves the MTHFR gene. Variants in MTHFR can affect folate metabolism, methylation efficiency, and the body’s ability to detoxify effectively. Impaired methylation has been linked to miscarriage, preeclampsia, placental dysfunction, and neural tube defects.

Gene testing before pregnancy gives prospective parents the opportunity to identify these risks early and support detoxification and DNA synthesis before those demands increase during pregnancy. Testing for MTHFR typically identifies variants such as C677T or A1298C through saliva or blood samples. An individual may carry one copy (heterozygous) or two copies (homozygous) of a given variant, which can influence how significantly methylation pathways are affected. Insurance coverage varies and is often dependent on a history of pregnancy loss or clotting disorders.

From a functional medicine perspective, these findings guide targeted interventions, including the use of methylated folate and other B vitamins, limiting exposure to synthetic folic acid, and reducing environmental toxin burden. This becomes especially important when evaluating standard prenatal vitamins, many of which may not be appropriate for individuals with certain MTHFR variants.

2. Factor V. Leiden

Clotting genetics are another critical piece of the preconception puzzle. Inflammation and abnormal clot formation pose serious risks during pregnancy and can contribute to pregnancy loss at any stage. One of the most well-known examples is Factor V Leiden, a genetic variant that increases the tendency toward excessive clotting and can interfere with normal placental blood flow. This disruption raises the risk for miscarriage, stillbirth, fetal growth restriction, and preeclampsia.

Gene testing before pregnancy can identify whether an individual carries one copy (heterozygous) or two copies (homozygous) of this variant through blood or saliva testing. Insurance coverage often depends on family history or a record of prior pregnancy complications. When clotting risk is identified early, care can focus on reducing inflammation, supporting healthy circulation, and coordinating obstetric management, including anticoagulation when clinically appropriate.

• Treatment: Strategies usually include blood thinners (anticoagulants) such as low molecular-weight heparin (LMWH) and sometimes, aspirin. Functional medicine also offers natural benefit from higher dose fish oil. Talk to your doctor about your options for Factor V as well as mutations in Prothrombin G20210A (below).

3. Prothrombin G20210A

Another important clotting-related gene to consider is the Prothrombin G20210A mutation. This variant also increases the risk of abnormal clot formation and can compromise placental circulation. Pregnancy places significant demand on vascular health, and genetic interference in these pathways raises the risk for both maternal and fetal complications.

Gene testing before pregnancy can identify this mutation through standard laboratory testing, with insurance coverage typically following the same criteria used for Factor V Leiden. From a functional medicine perspective, this knowledge allows care to focus on prevention rather than crisis management. Targeted nutrient support, inflammation control, and proactive monitoring can be put in place early, empowering mothers to pursue appropriate maternal care long before a pregnancy complication ever occurs. As a functional medicine doctor, my #1 treatment is a whole foods, ancestral diet that includes organ meats, fish and healthy animal fats.

4. COMT (Catechol-O-Methyltransferase)

Genetics related to hormone metabolism also play an important role in fertility and overall pregnancy experience. Variants in the COMT gene influence how the body clears estrogen, regulates neurotransmitters, and responds to stress. Slower estrogen metabolism can contribute to hormone dominance, implantation difficulties, and more pronounced pregnancy symptoms. Increased stress sensitivity disrupts cortisol balance, which in turn affects immune tolerance and hormonal signaling throughout pregnancy. COMT variations may also influence how an individual responds to certain antidepressant medications, a consideration that is especially relevant given how many women are using these medications prior to conception or during pregnancy.

Gene testing before pregnancy often evaluates COMT through saliva-based genetic panels. Insurance coverage is uncommon, and self-pay rates vary depending on which other markers are involved on the genetic panels. (I’ve seen anywhere from $100 to $350). In functional medicine, these results guide strategies such as supporting estrogen detoxification pathways, improving stress resilience, and providing targeted micronutrient support. Because stress and impaired hormone metabolism can significantly challenge both conception and pregnancy, addressing these risks proactively allows many of these obstacles to be prevented rather than managed after the fact.

5. CFTR (Cystic Fibrosis Transmembrane Conductance Regulator)

Carrier screening plays a crucial role in responsible family planning. CFTR gene testing identifies carrier status for cystic fibrosis and sheds light on certain male fertility issues. An estimated 1 in 25 people is a carrier of CFTR mutations, so couples benefit from knowing this about themselves before conception. Gene testing before pregnancy uses blood or saliva samples to determine carrier status rather than disease presence. Insurance frequently covers this screening during pregnancy planning or when family history exists. Genetic counseling supports informed decisions when both partners carry variants.

Taken together, these tests form a powerful foundation for prevention, but modern prenatal care rarely encourages couples to complete this testing outside of IVF offices. However, all couples deserve to know the truth about their health so they can hopefully avoid the pain and devastation of fertility and pregnancy challenges. Gene testing before pregnancy replaces uncertainty with strategy. Each result informs nutrition, supplementation, and lifestyle choices for maximally effective preventative medical care.

Functional medicine is founded on this level of personalization. Work with a functional medicine doctor to unlock your own genetic potential to maximize your health, fertility, longevity and more.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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If you’re wondering how to naturally increase fertility, the most important thing you should know is that fertility isn’t just about the reproductive organs—it’s a whole-body indicator of health. As a functional medicine doctor, I’ve helped countless patients learn how to naturally increase fertility by addressing imbalances across all systems of the body. If you’re trying to conceive without resorting to pharmaceuticals or IVF, this guide will give you the strategic, root-cause roadmap to reclaim your fertility naturally.

Why Increase Fertility Naturally?

Natural fertility optimization isn’t just about conception—it’s about creating the healthiest possible environment for you and your future child. Couples choose to increase fertility naturally because they want to avoid synthetic hormones, invasive procedures, or expensive treatments that ignore the real cause of the issue. They want to heal, not override, their bodies. IUI, IVF and other fertility treatments can alo be extremely costly, which is another important reason to consider learning how to naturally increase fertility. However, even when pursuing fertility treatments, or perhaps undergoing a process of egg retrieval for egg freezing or a sperm harvesting for sperm freezing, it’s still a good idea to take all possible measures to increase fertility naturally so that the eggs have the best possible chance of success.

Conventional medicine often reduces fertility to a hormone problem. But infertility is a signal—your body is telling you something is off. When we listen, investigate, and treat the underlying dysfunction, the result isn’t just fertility—it’s vitality, balance, and lasting health.

Lifestyle Practices That Harm Fertility

Before we can build fertility, we need to stop destroying it. The modern lifestyle is fertility-toxic. Here’s how:

• Chronic Stress: Activates the HPA axis and shuts down reproductive hormones. Cortisol hijacks your cycle, suppressing ovulation and libido. It also significantly suppresses testosterone production and sperm quality in men.
• Poor Sleep: Disrupts circadian rhythms and hormone production—especially melatonin and progesterone, as well as testosterone in men.
• Toxin Exposure: Pesticides, BPA, phthalates, and heavy metals mimic hormones and disrupt endocrine balance. There is also data out there that exposure to plastics in clothing also act as fertility disruptors, creating changes in electrical and magnetic signaling that negatively impact ovarian function and sperm quality. Look for clothing that is free of plastics, PUFAs, and other synthetics.
• Nutrient-Deficient Diets: Low-fat, high-sugar, or overly restrictive diets destroy hormone production and egg quality. Our ultra-processed modern diet is void of nutrients despite being rich in processed carbohydrates and seed oils. In fact, both simple carbs and seed oils have been proven to negatively impact fertility. Aim to include high-quality animal proteins and fats as well as organic, darkly colored fruits and vegetables like berries and leafy greens. I also recommend a daily carrot salad for hormone balance.
• Overtraining/Under-Eating: Particularly common in driven, Type A women, this leads to hypothalamic amenorrhea, where the brain shuts down ovulation entirely.
• Alcohol, Caffeine, and Smoking: All three impair egg quality, sperm health, and hormone balance. I recommend avoiding all three if you’re TTC.

A note about these lifestyle factors: These foundational elements are pretty universal amongst articles describing methods for how to naturally increase fertility. Because they’re so ubiquitous, it may seem tempting to overlook them in search of something more direct, more exclusive, or more granular. While I do offer such recommendations below, I want you to know that lifestyle is the single most important factor in fertility as well as in health as a whole. It will do you no good to look to supplements or anything else for how to naturally increase fertility while overlooking the lifestyle. There is no supplements, and honestly no drug, that can undo the effects of poor sleep, high stress, toxin exposure, calorie deficits, substance abuse, and a poor diet.

How to Naturally Increase Fertility by Identifying the Root Cause of Fertility Disorders

To truly increase fertility naturally, you must identify why your body isn’t conceiving. Here are the most common root-cause conditions that sabotage fertility:

1. Thyroid Disorders

Low thyroid function (hypothyroidism) decreases progesterone, disrupts ovulation, and increases miscarriage risk. If your TSH is “normal” but you’re still tired, cold, or constipated—get a full thyroid panel. Subclinical hypothyroidism often flies under the radar. Hyperthyroidism, such as seen in Graves’ disease, also negatively impacts fertility. If you’re wondering how to increase fertility naturally, you should start by getting your thyroid thoroughly checked out.

2. PCOS (Polycystic Ovary Syndrome)

PCOS is an insulin-resistance and androgen-dominance issue. It impairs ovulation, leads to cystic ovaries, and causes irregular cycles. You must correct blood sugar dysregulation, reduce inflammation, and support hormone detoxification to restore ovulation.

3. Endometriosis

This inflammatory, estrogen-driven condition causes pelvic pain and infertility by distorting reproductive anatomy and disrupting implantation. Gut health, immune balance, and estrogen metabolism must be addressed aggressively.

4. Hypothalamic Amenorrhea

This is the brain pulling the emergency brake on fertility due to perceived stress or lack of energy availability. It’s common in athletes, perfectionists, and under-eaters. Recovery requires restoring adequate caloric intake, body fat, and nervous system calm.

5. HPA Axis Dysfunction (Adrenal Fatigue)

The hypothalamic-pituitary-adrenal axis controls the stress response. When it’s dysregulated, it suppresses reproductive hormones. You must rewire the stress response through nervous system regulation, sleep, and adrenal support to restore fertility.

How to Naturally Increase Fertility with Supplements

Certain nutrients powerfully support reproductive function. Many of these are key players in my practice for optimizing fertility:

• Myo-Inositol: Improves insulin sensitivity and ovulatory function—especially critical for PCOS.
• CoQ10 (Ubiquinol): Enhances mitochondrial function in eggs and sperm, improving quality and developmental potential.
• Omega-3 Fatty Acids: Reduce inflammation and support hormone production.
• Methylated B Vitamins (especially B9/Folate): Crucial for methylation, egg health, and preventing neural tube defects.
• Magnesium: Calms the nervous system, supports adrenal function, and improves sleep—all essential for fertility.
• Vitamin D3: Regulates hormone production and immune balance. Low levels are directly linked to infertility and miscarriage.

How to Naturally Increase Fertility by Looking at the Whole Body

Your uterus does not operate in a vacuum. Fertility is the result of systemic harmony, not isolated hormonal tweaks. Here’s how the entire body affects your ability to conceive:

Brain & Nervous System

The hypothalamus and pituitary gland orchestrate your reproductive cycle. Chronic stress rewires your brain to shut down reproduction. Nervous system regulation—via breathwork, somatic practices, and trauma healing—is fertility medicine.

Gut Health

The gut regulates nutrient absorption, immune response, and estrogen metabolism. Dysbiosis, leaky gut, or SIBO drive inflammation and hormone imbalance. Heal the gut, and you lay the groundwork for conception.

Liver Function

The liver detoxifies excess estrogen and metabolizes hormones. A sluggish liver leads to estrogen dominance, PMS, and ovulatory issues. Support with cruciferous vegetables, dandelion root, NAC, and targeted herbs.

Blood Flow

Pelvic blood flow is essential for ovarian and uterine health. Sedentary lifestyle, poor circulation, and inflammation impair oxygen and nutrient delivery to reproductive organs. Movement, dry brushing, acupuncture, and castor oil packs all enhance circulation.

Musculoskeletal System

Tension in the pelvis, scar tissue, or misalignment in the spine can block blood flow and nerve signaling. Bodywork (chiropractic, craniosacral therapy, pelvic floor therapy) helps clear the path for conception.

Lymphatic System

The lymphatic system clears cellular waste and toxins. A stagnant lymph system clogs hormone pathways and raises inflammation. Rebounding, sauna, hydration, and manual lymph drainage support this overlooked detox pathway.

Final Thoughts: Fertility Is a Barometer of Health

To naturally increase fertility, you must stop chasing hormones and start chasing health. When your body feels safe, nourished, and in balance—it will create life. This isn’t theory. I’ve seen it happen over and over with patients who were told their only option was IVF.

Natural fertility is not luck. It’s the result of uncovering root causes, supporting the body as a whole, and restoring biological wisdom. Your body is not broken. It’s communicating.

You just need to learn how to listen—and how to heal.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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The post How to Naturally Increase Fertility appeared first on Dr. Alexandra MacKillop.

Have you heard of estrogen dominance Or maybe, you already know you’re dealing with this hormone imbalance. Excess estrogen (or deficient progesterone) disrupts hormonal balance, triggering symptoms such as weight gain, mood swings, heavy periods, and fatigue. Functional medicine targets root causes with precision, and understanding why you have estrogen dominance is key to treating this condition. Herbs for estrogen dominance play a pivotal role in restoring estrogen balance by supporting detoxification, improving insulin sensitivity, and enhancing progesterone production. Below, I detail clinically supported herbs for estrogen dominance that that effectively address their mechanisms, and recommended dosages.

As we get started, here are a few key things to keep in mind when it comes to estrogen dominance:

• Estrogen dominance is a condition in which negative symptoms occur because of a high estrogen level in relation to progesterone
• Estrogen dominance may be caused by excess estrogen production, deficient progesterone production or both
• Certain underlying diseases and syndromes increase risk of estrogen dominance, like obesity, PCOS, type 2 diabetes and hypothyroidism
• Even if you have symptoms of estrogen dominance, it doesn’t necessarily mean you have it. It’s essential to test your hormones and understand your diagnosis before using any treatment strategies

Herbs for Estrogen Dominance, Explained

1. DIM (Diindolylmethane): Detoxify Excess Estrogen

DIM is one of the most powerful herbs for treating estrogen dominance. This is a compound derived from cruciferous vegetables, promotes healthy estrogen metabolism by enhancing Phase 1 and Phase 2 liver detoxification pathways. It shifts estrogen breakdown toward beneficial 2-hydroxy metabolites and away from harmful 16-alpha-hydroxy metabolites linked to estrogen dominance and cancer risk. Impaired gut function or excess production of estrogen are key candidates for treatment with DIM.

• Dosage: 100-200 mg daily
• Evidence: A randomized controlled trial found DIM supplementation significantly improved estrogen metabolism in women with estrogen dominance symptoms [2].

2. Calcium D-Glucarate (CDG): Support Estrogen Clearance

CDG inhibits beta-glucuronidase, an enzyme that reverses estrogen conjugation in the gut, preventing reabsorption and facilitating elimination. This reduces circulating estrogen levels, decreasing estrogenic load. Those who eat a diet high in ultra-processed foods and sugar are likely to benefit from supplementation with CDG when high estrogen levels have been documented on labs at any point in the cycle. This could be considered either a food or one of the best herbs for estrogen dominance.

• Dosage: 300-400 mg daily
• Evidence: Clinical studies demonstrate CDG enhances detoxification and lowers estrogen recirculation, supporting hormonal balance.

3. Berberine: Target PCOS and Insulin Resistance

Polycystic Ovary Syndrome (PCOS) drives estrogen dominance via insulin resistance and androgen imbalance. Berberine improves insulin sensitivity, regulates blood glucose, and supports gut microbiota diversity—addressing core PCOS mechanisms. Berberine may also be helpful in those with impaired gut detox pathways due to imbalances in good and bad bacteria, as berberine affects microbiological diversity.

• Dosage: 500 mg twice daily with meals
• Evidence: Multiple randomized trials show berberine’s superiority to metformin in reducing insulin resistance and improving ovulatory function in PCOS patients.

4. Evening Primrose Oil: Boost Progesterone Production

Evening primrose oil supplies gamma-linolenic acid (GLA), a precursor to prostaglandins that stimulate progesterone synthesis. Increased progesterone balances excess estrogen, alleviating symptoms like breast tenderness and PMS. If estrogen dominance and related symptoms are caused by deficient progesterone, meaning there isn’t enough progesterone to balance out otherwise normal estrogen levels, EPO may be the right solution.

• Dosage: 1,000-2,000 mg daily
• Evidence: Clinical reports confirm evening primrose oil’s efficacy in improving luteal phase defects by increasing progesterone.

5. Fish Oil: Modulate Inflammation and Hormonal Balance

Omega-3 fatty acids reduce systemic inflammation and improve insulin sensitivity, indirectly supporting estrogen metabolism and progesterone activity. Inflammation is a major driver of excess production of estrogen in men and women from abdominal fat cells.

• Dosage: 1,000-3,000 mg EPA/DHA daily
• Evidence: Supplementation reduces inflammatory markers and improves hormonal profiles in women with hormonal imbalances.

6. Fenugreek: Support Hormonal Regulation

Fenugreek seeds contain phytoestrogens that modulate estrogen receptor activity and stimulate progesterone production, improving estrogen-to-progesterone ratio.

• Dosage: 500-600 mg daily
• Evidence: Controlled trials indicate fenugreek improves hormonal balance and reduces estrogen dominance symptoms.

7. Fennel Tea: Natural Estrogen Modulator

Fennel contains anethole, which exhibits estrogenic activity that regulates menstrual cycles and reduces estrogen dominance symptoms such as bloating and cramps.

• Dosage: 1-2 cups of fennel tea daily
• Evidence: Clinical use supports fennel’s effectiveness in managing menstrual disorders related to estrogen imbalance.

8. Cinnamon: Improve Insulin Resistance and Hormone Balance

Cinnamon enhances insulin sensitivity and lowers blood glucose, indirectly reducing ovarian androgen production and estrogen dominance, especially in PCOS.

• Dosage: 1-3 grams daily
• Evidence: Studies confirm cinnamon’s role in metabolic and hormonal regulation in women with insulin resistance.

9. Chamomile: Calm Inflammation and Support Progesterone

Chamomile’s anti-inflammatory properties reduce systemic inflammation that disrupts hormone production. It also supports progesterone synthesis through improved adrenal function.

• Dosage: 1-2 cups chamomile tea daily or 300 mg extract
• Evidence: Research validates chamomile’s efficacy in reducing inflammation and improving hormonal balance.

10. CBD Oil: Regulate Endocrine and Stress Response

CBD modulates the endocannabinoid system, which influences hormone regulation and reduces cortisol-driven estrogen dominance. It also supports liver detoxification.

• Dosage: 10-50 mg daily, titrated individually
• Evidence: Emerging studies demonstrate CBD’s role in hormone balance and stress reduction [20].

11. Boron: Enhance Hormonal Balance and Bone Health

Boron increases circulating levels of free testosterone and estrogen metabolites, promoting a favorable hormonal environment and supporting bone density.

• Dosage: 3-6 mg daily
• Evidence: Clinical trials report boron’s capacity to increase steroid hormone levels and improve metabolic health.

12. Black Cohosh: Promote Ovulation and Progesterone Production

Black cohosh exhibits estrogenic effects that stimulate ovulation and improve progesterone synthesis, directly countering estrogen dominance.

• Dosage: 40-80 mg daily standardized extract
• Evidence: Clinical trials validate black cohosh’s role in improving luteal phase and balancing estrogen-progesterone ratio.

13. Adaptogens (Reishi): Balance Stress Hormones and Support Endocrine Health

Reishi mushroom modulates the hypothalamic-pituitary-adrenal axis, reducing cortisol and supporting overall endocrine harmony, which indirectly regulates estrogen dominance.

• Dosage: 1,000-1,500 mg daily
• Evidence: Studies show Reishi’s efficacy in reducing stress-related hormonal imbalance and inflammation.

Functional medicine’s approach to estrogen dominance requires targeted, evidence-based herbal interventions. DIM, CDG, berberine, evening primrose oil, fish oil, and other botanicals address detoxification, insulin resistance, inflammation, and progesterone support. Combining these herbs with lifestyle modifications establishes hormonal balance and improves patient outcomes.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

Become a Patient

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Sign Me Up!

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The post Herbs for Estrogen Dominance and Hormonal Balance appeared first on Dr. Alexandra MacKillop.

Progesterone is quite the buzz word these days. Whether you’re in perimenopause and considering hormone replacement therapy (HRT), you’re newly pregnant and having levels tested, or you’re experiencing some menstrual irregularities attributed to imbalances between estrogen and progesterone, the term has likely come up for you. But, what is progesterone What does it do for the body How do you know if you have enough of it How can you test progesterone levels at home Read on to find answers to all these questions and more.

What is progesterone and how can you test progesterone levels at home?

Progesterone is a hormone primarily produced by the ovaries in women, particularly after ovulation during the second half of the menstrual cycle. After ovulation, a gland called the corpus luteum forms which secretes progesterone. If you don’t ovulate, you can’t make progesterone because you won’t have a corpus lutem. You need progesterone because it plays a crucial role in regulating the body’s functions, including:

1. Menstrual Cycle: Progesterone helps prepare the uterine lining for potential implantation of a fertilized egg. It also prevents the uterine lining from getting too thick or shedding too quickly.
2. Pregnancy: If pregnancy occurs, progesterone helps maintain the uterine lining, supporting the developing embryo. This is where progesterone gets its name from: pro-gest(ation)
3. Breast Development: It also protects breast tissue from too much estrogen and prepares the breasts for milk production during pregnancy.

In addition to its role in female reproductive health, progesterone is involved in other bodily functions, including mood regulation, sleep and maintaining bone density. (Because it’s so important, and because many providers don’t test levels in office, it’s helpful to know how to test progesterone levels at home.) It is also used in hormone replacement therapy and in various contraceptive methods. Let’s take a closer look:

Progesterone and Brain Health

Progesterone significantly affects the brain and mood due to its influence on neurotransmitters and brain function. Here are some key ways it affects mood:

1. Neurotransmitter Modulation: Progesterone enhances the effects of certain neurotransmitters, such as gamma-aminobutyric acid (GABA), which has calming effects and reduces anxiety.
2. Mood Regulation: Changes in progesterone levels during the menstrual cycle lead to mood fluctuations. Higher levels in the luteal phase (after ovulation) contributes to feelings of calmness, while lower levels pre-menstruation correlates with mood swings or premenstrual syndrome (PMS).
3. Anxiety and Depression: Studies show that progesterone protects against anxiety and depression, though the relationship varies from person to person. I describe estrogen as an “energizing” hormone, which motivates and gets you going. But all that energy, when not balanced by the cool, calming effects of progesterone, becomes anxiety and irritability. Knowing how to test progesterone levels at home is helpful when struggling with premenstrual symptoms like depression or anxiety. If you can track your levels, you can anticipate better how to support your mood.
4. Neuroprotection: Progesterone may have neuroprotective properties, potentially supporting brain health and cognitive function. Maintainin healthy progesterone levels throughout life decreases risk of brain fog and neurodegeneration.
5. Sleep Quality: Progesterone is also linked to improved sleep quality, which subsequently boosts mood. Insomnia is a problem for many perimenopausal women, and the most common prescription is estrogen hormone replacement therapy. However, progesterone actually is much more effective at improving sleep both in perimenopause and at other times of life.

Progesterone and Metabolism

Progesterone affects metabolism and blood sugar control in several ways:

1. Cortisol Interaction: Progesterone interacts with cortisol, the stress hormone. High levels of cortisol affect blood sugar levels and metabolism, and progesterone helps moderate some of these effects.
2. Reproductive Health: In women with polycystic ovary syndrome (PCOS) or other hormonal imbalances, therapeutic strategies that increase progesterone also help regulate menstrual cycles and improve metabolic outcomes. In many cases, low progesterone levels in early pregnancy can lead to miscarriage, which is why it’s helpful to know how to track progesterone levels at home (so you can advocate for yourself in a healthcare provider’s office!)

Progesterone and Thyroid Function

Progesterone affects thyroid function in several ways, largely due to its interactions with thyroid hormones and the overall hormonal balance in the body. Here are some key points:

1. Thyroid Hormone Regulation: Progesterone changes how and when the body makes thyroid hormone, influencing metabolism. It also helps support the synthesis of thyroid hormones and enhances their effects.
2. Binding Proteins: Progesterone affects the levels of thyroid-binding globulin (TBG), a protein that binds thyroid hormones in the blood. Increased levels of TBG can lead to higher total thyroid hormone levels, and increased metabolic rate/response.
3. Metabolic Rate: Progesterone benefits metabolic rate, partly by influencing thyroid hormone activity. This dramatically impacts energy levels and weight management.
4. Hormonal Balance: In women, fluctuations in progesterone during the menstrual cycle influences thyroid function. For example, low progesterone levels are associated with conditions like hypothyroidism and infertility.

Progesterone, Adrenal Function and Cortisol

Progesterone has several effects on adrenal function and cortisol levels, primarily through its interactions with the endocrine system. Here are the key points:

1. Stress Response: Progesterone helps modulate the body’s response to stress. It has a calming effect and counterbalances some of the stimulating effects of cortisol and estrogen.
2. Hormonal Balance: The relationship between progesterone, cortisol, and other hormones is complex. High cortisol levels can lead to a decrease in progesterone, contributing to hormonal imbalances that can affect mood, energy levels, and overall health.

Does the birth control pill have progesterone?

Progestins, the synthetic versions of progesterone used in many forms of birth control, differ from natural progesterone in several key ways:

1. Chemical Structure: Progestins are chemically modified molecules of testosterone that have been changed to interact with the human brain and ovaries. Although they are chemically similar, they are not exactly the same.
2. Hormonal Activity: While progestins mimic some of the actions of natural progesterone, they can have varying degrees of activity on progesterone receptors and other hormone receptors (like androgen and glucocorticoid receptors). This leads to side effects that are not typically associated with natural progesterone. The progestins in birth control contribute to insulin resistance, thyroid disorders and depression whereas natural progesterone prevents those things.
3. Side Effects: The side effects of progestins differ from those of natural progesterone due to their altered hormonal activity. Many experience mood changes, weight gain, or acne with artificial progestins, while these effects don’t occur with natural progesterone.
4. Impact on Menstrual Cycle: Progestins can affect the menstrual cycle in ways that natural progesterone does not, such as altering bleeding patterns, causing lighter or more irregular periods, or even stopping menstruation altogether in some users.

The biggest takeaway is that using artificial progestins, by design, prevents your body from producing its own progesterone. If you have progestins, you can’t have progesterone, and you’re therefore automatically progesterone deficient. In this case, it won’t be helpful to test progesterone levels at home.

How to Test Progesterone Levels

The first and most important thing is to determine if you’re ovulating. If you aren’t ovulating, you can’t make progesterone because you won’t have the corpus luteum gland we discussed earlier. It is impossible to “test” progesterone levels at home if you’re not ovulating because you will not have any meaningful level of progesterone in your body. That means that if you’re using oral ceontraceptives like the birth control pill, or other forms of hormonal drugs like the implant, the Nuva Ring, or certain types of IUD, you aren’t ovulating and subsequently are progesterone deficient.

However, other health conditions may also cause low progesterone because of anovulation, like thyroid disorders, hypothalamic amenorrhea (stress-induced anovulation and lack of periods), and PCOS to name a few. If you aren’t having ovulatory periods at least every month, you are likely deficient in progesterone.

1. How to Track Progesterone Levels at Home with Ovulation

To track your progesterone levels at home, you first need to find out if you’re ovulating and when. The most straightforward way to know if you’re ovulating is to track your cycle using basal body temperature. I wrote a blog post all about how to do this which you can access here. You also can track ovulation using prediction methods, such as urinary LH testing or tracking cervical fluid, though it’s important to note that these methods do not confirm ovulation. Rather, they predict when (generally) in your cycle you may be close to ovulation.

When tracking ovulation, mark the following…

• The day before your basal body temperature rises above baseline
• The day after you have a positive LH test strip
• The day before your cervical fluid transitions from watery/ewcm (egg white cervical mucus) to a thick, dry, gluey texture

2. How to Track Progesterone Levels at Home with Luteal Phase

Once you have identified the day of ovulation, the next step in learning how to track your progesterone levels at home is calculating your average luteal phase length. The luteal phase is calculated from the total cycle length (i.e. 28 days) minus the day of ovulation (i.e. day 14). In the example just given, a 28-day cycle minus ovulation day of CD 14 would be a 14-day luteal phase, which is optimal.

A short luteal phase, which is less than 10 days long, is a sign of progesterone deficiency.

However, tracking luteal phase at home also helps you to know when the optimal day to test progesterone levels is, whether using a urinary hormone test at home or you are visiting a lab facility to have a progesterone blood draw. The optimal day to test progesterone levels is 5 to 7 days before your next period. Obviously, if you have no idea how long your luteal phase is, you don’t know when to predict that optimal 5-to-7-day period. This is why it’s important to track cycle length, day of ovulation, and luteal phase length for several cycles before tracking progesterone levels at home. Testing on the wrong day might give results that make it seem like you have a less-than-optimal level of progesterone.

Basal body temperature charts can also give indication of progesterone levels. While they are an indirect measure, if you have an elevation of your body temperature above baseline that is less than 0.5 degrees Fahrenheit, it may be a sign of low progesterone levels.

3. How to Track Progesterone Levels at Home with Luteal Phase

After the corpus luteum makes progesterone, the body breaks it down into a progesterone metabolite called Pregnanediol Glucuronide (PdG) which can be measured in urine, similarly to urinary LH test strips. While it is not exactly the same as progesterone, it reflects progesterone production and levels in the body.

PdG test strips can be purchased inexpensively over the counter, such as Easy @ Home, Proov and Inito (a comprehensive fertility hormone testing system that also includes estradiol, LH and FSH levels). Using urinary PdG, a level of 5 ug/mL indicates successful ovulaiton, which is roughly equivalent to a serum progesterone level of 10 ng/mL. The optimal levels for urinary PdG and blood serum progesterone would then be 7.5 ug/mL (urinary) and 15 ug/mL (serum) respectively.

How to Track Progesterone Levels at Home with Signs and Symptoms of Progesterone Deficiency

While clinical symptoms don’t confirm progesterone deficiency, they may serve as a clue that you are low on progesterone and should consider starting to test your progsterone levels at home. These include:

• Irregular Menstrual Cycles: Changes in cycle length, missed periods, or very light or heavy menstrual bleeding.
• PMS Symptoms: Increased premenstrual syndrome (PMS) symptoms, such as mood swings, irritability, and bloating.
• Mood Changes: Anxiety, depression, or mood swings that are more pronounced around the menstrual cycle.
• Sleep Issues: Difficulty sleeping or insomnia.
• Hot Flashes: Symptoms resembling those of menopause, including hot flashes and night sweats.
• Weight Gain: Unexplained weight gain or difficulty losing weight, often due to changes in metabolism.
• Low Libido: Decreased sexual desire or changes in sexual function.
• Fatigue: Increased fatigue or low energy levels.
• Breast Changes: Tenderness or changes in breast tissue, including fibrocystic changes.
• Hair Loss or Thinning: Changes in hair growth, including thinning hair or hair loss.

Perimenopause

One of the hallmarks of perimenopause is a shortening luteal phase length, shorter menstrual cycles and less progesterone. Estrogen also takes off on a roller coaster ride. You can diagnose perimenopause with an elevated FSH level in combination with a normal or increased LH level, or with increased LH and FSH in combination with having had a menstrual period in the last 12 months. Being age 40 or above is also a good sign that your progesterone levels are changing.

Test for Progesterone with Lab Testing

Of course, the only way to know for sure that you have low progesterone levels (provided that you are ovulating) is to test them. A progesterone level of at least 4.44 ng/mL (this may vary slightly depending on the lab) is required to confirm ovulation. However, what we care most about is the peak progesterone level achieved in the luteal phase. Because normal luteal phases typically range from 10-14 days, you need to test your progesterone level between 5 and 7 days before the start of your next period.

If you have regular menstrual cycles and track ovulation with basal body temperature, you know exactly when you’ll reach the midpoint of your luteal phase. If you don’t know when you ovulate, look at the average length of your menstrual cycles. If your cycles are between 24 and 28 days long, I’d recommend scheduling a blood draw 5 days before your next expected period. If they are 29 days or longer, I’d recommend scheduling a blood draw to be 7 days before your next expected period. Note that this isn’t a perfect algorithm; it’s possible to have a 14-day luteal phase in a 24-day cycle and a 10-day luteal phase in a 33-day cycle. However, particularly in the case of perimenopause, a short cycle is more likely to be accompanied by a relatively shorter luteal phase. The target is at least 15.0 ng/mL at the peak progesterone production, however higher is always better. (Note: non-pregnant cycles rarely exceed 28 ng/mL)

Not having enough progesterone leads to a range of health risks and complications, particularly in women. Symptoms include irregular periods, heavy bleeding, or amenorrhea (the absence of menstruation). This hormonal imbalance also exacerbates premenstrual syndrome (PMS) symptoms, leading to heightened mood swings, anxiety, and irritability. Additionally, progesterone deficiency is associated with an increased risk of endometrial hyperplasia, a condition where the uterine lining becomes too thick, potentially raising the risk of endometrial cancer. It also affects bone health, as progesterone plays a role in maintaining bone density; low levels may contribute to osteoporosis over time. Furthermore, inadequate progesterone leads to fertility issues, as it is essential for preparing the uterine lining for implantation of a fertilized egg. Overall, a lack of progesterone significantly impacts physical and emotional well-being, so if you are concerned about your progetserone levels, be sure to seek care from a functional medicine physician.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

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What Is Letrozole?

Letrozole is a medication primarily used in the treatment of breast cancer but is also widely prescribed to women struggling with infertility, especially those diagnosed with polycystic ovary syndrome (PCOS). It works as an aromatase inhibitor, reducing the production of estrogen from precursor molecules like DHEA and other androgens. By lowering estrogen levels, Letrozole stimulates the release of follicle-stimulating hormone (FSH), which, in turn, promotes ovulation. Ovulation is essential for conception, and Letrozole helps correct the problem of excess estrogen (estrogen dominance) by regulating the brain-ovarian axis. However, the way it accomplishes this is by overriding an inborn system rather than helping to support the natural design of the body. Natural Letrozole alternatives accomplish the same goal without relying on prescription drugs that block hormone systems.

Doctors typically prescribe Letrozole to women who don’t respond to Clomid (clomiphene citrate) or for those who have PCOS but are looking for a less invasive alternative to injectable fertility drugs. It’s generally favored for its relatively mild side effects compared to other fertility medications. If you are looking for natural alternatives to Letrozole, you’re reading the right article.

Why Is Letrozole Prescribed for Fertility?

Letrozole is prescribed when women fail to ovulate on their own. Not ovulating is a key cause of infertility. However, the number one thing to consider when looking for natural alternatives to Letrozole and other fertility drugs is answering the question of why a person is not ovulating to begin with. I see three main reasons in my practice for lack of ovulation which include:

• Hypothalamic Amenorrhea (a condition in which the body’s stress response inhibits ovulation)
• PCOS (a condition in which high androgen levels prevent ovulation)
• Perimenopause (a condition in which aging of the ovary and reduce egg quality lead to irregular or absent ovulation)

There are many hormone imbalances that can cause lack of ovulation, including hypothyroidism and hyperthyroidism, though those are separate imbalances that typically don’t result in a Letrozole prescription.

The condition of hypothalamic amenorrhea, in my opinion, is not an appropriate time to use Letrozole because the body is already in a suppressed estrogen state. In this case, natural letrozole alternatives and addressing the root cause are much more effective. In perimenopause, FSH levels may already be high, and using Letrozole to further increase them may not actually help. However, estrogen levels are often also high in the early stages of perimenopause so advanced maternal age, in my clinical experience, is a more appropriate use of Letrozole. That being said, natural alternatives to Letrozole are often more appropriate and more effective. For PCOS, this would be the classic use of Letrozole because high estrogen and low FSH are common in this condition. That being said, understanding the root cause of PCOS is essential when treating the condition naturally and identifying viable natural alternatives to using Letrozole or other fertility drugs.

While Letrozole does its job effectively in many cases, it’s not without potential side effects like headaches, fatigue, and ovarian cysts. For those seeking to avoid pharmaceutical options, natural Letrozole alternatives provide a safe, non-toxic way to stimulate ovulation and improve fertility.

How Does Letrozole Compare to Other Fertility Medications?

Compared to other fertility medications like Clomid (clomiphene citrate) and injectable gonadotropins, Letrozole is less likely to cause multiple births (twins or more). Clomid, for instance, can lead to a higher incidence of multiple pregnancies, whereas Letrozole tends to result in single, healthy pregnancies. Letrozole is also often preferred over Clomid for women with PCOS due to its more favorable side effect profile.

Injectable gonadotropins, another common fertility treatment, stimulate the ovaries to produce eggs directly, often resulting in more aggressive stimulation and a higher risk of ovarian hyperstimulation syndrome (OHSS). Letrozole, however, works in a more controlled manner by stimulating the body’s natural hormone production.

Despite these benefits, Letrozole still relies on hormone manipulation, which can be taxing on the body and may result in rebound hormone imbalances after pregnancy. This is why many patients turn to natural Letrozole alternatives—herbal supplements that naturally support the body’s hormonal balance without the need for synthetic drugs.

The Mechanism of Action Behind Letrozole and Natural Alternatives

Let’s Review: Letrozole operates by inhibiting the aromatase enzyme, which is responsible for converting androgens into estrogen. As estrogen levels decrease, the body responds by increasing the production of follicle-stimulating hormone (FSH), which stimulates the ovaries to release mature eggs.

Natural Letrozole alternatives work by leveraging similar mechanisms to promote fertility. They either directly inhibit aromatase or support the body’s endocrine system to regulate hormone production, such as estrogen levels. While these alternatives don’t work as rapidly as prescription medications, they offer a gentler and sustainable way to address infertility.

Root Causes of Infertility and Letrozole Prescription

When Letrozole is prescribed, the root cause of infertility is often related to hormonal imbalances, specifically in women with PCOS. PCOS leads to an overproduction of androgens (male hormones) which are converted into estrogen at high levels. Very high levels of this nature contributes to the inhibition of ovulation seen in PCOS. Letrozole works by reducing estrogen, thus triggering ovulation and improving the chances of pregnancy.

For other women, infertility can result from issues like poor egg quality, irregular cycles, or insufficient progesterone. In such cases, Letrozole is used to support ovulation, but it may not address underlying hormonal imbalances or deficiencies. Natural Letrozole alternatives, however, take a more holistic approach by addressing the broader spectrum of hormonal imbalances contributing to infertility.

Natural Letrozole Alternatives for Fertility

1. Resveratrol
   
   • How It Works: Resveratrol functions as a direct and effective natural aromatase inhibitor. In women with estrogen-dominant conditions or polycystic ovary syndrome (PCOS), this conversion process becomes dysregulated, leading to suppressed ovulation and hormonal imbalance. Resveratrol blocks the activity of aromatase at the cellular level. It binds to the enzyme’s active site, reducing its ability to synthesize estrogen from androgen precursors. This inhibition lowers circulating estrogen levels, which signals the hypothalamus and pituitary gland to increase the release of follicle-stimulating hormone (FSH). Elevated FSH promotes the development and maturation of ovarian follicles, which directly supports ovulation and improves the chances of conception, acting in direct similarity to Letrozole and offering a natural Letrozole alternative.
   • Advantages: Unlike Letrozole, Resveratrol offers this action without the synthetic load on the liver or disruption of other hormonal systems. It also delivers strong antioxidant and anti-inflammatory support, which helps reduce oxidative stress in the ovaries and improves overall endocrine function. For women seeking natural Letrozole alternatives, Resveratrol provides targeted hormonal modulation. It mimics the clinical benefits of Letrozole—ovulation induction, estrogen control, and follicular development—through a plant-based, bioavailable pathway that supports the body rather than overriding it.
   • Typical Dosage:
     • Dose: 150–250 mg per day
     • Standardization: Choose trans-resveratrol supplements with 98–100% purity to ensure bioactive effectiveness
     • Form: Capsule or softgel, ideally in a micronized or liposomal form for increased absorption
     • Timing: Take once daily with food, preferably in the morning to align with cortisol rhythm and minimize GI upset
     • Duration of Use
       • Use for a minimum of 8–12 weeks to support estrogen clearance, normalize ovulation, and improve egg quality
       • Best applied during follicular phase or as part of a broader preconception protocol when preparing the body for ovulation
     • Synergistic Combinations
       • Combine with quercetin or EGCG to amplify aromatase inhibition and antioxidant protection
       • Pair with NAC or milk thistle to support phase I and II liver detox—crucial for estrogen metabolism
       • Use alongside inositol for added insulin regulation in PCOS-driven infertility
2. Green Tea Catechins (EGCG)
   • How It Works: EGCG, the active polyphenol in green tea, acts as a potent natural aromatase inhibitor. It directly suppresses the activity of the aromatase enzyme, which converts androgens into estrogens. EGCG not only inhibits estrogen synthesis by directly binding to and blocking aromatase (similarly to Resveratrol) but also modulates gene expression linked to estrogen metabolism. It downregulates CYP19A1, the gene encoding aromatase, further limiting estrogen production at the source. The result: restored ovulatory cycles, improved egg maturation, and increased fertility potential.
   • Advantages: Unlike synthetic drugs, EGCG delivers this hormonal recalibration without liver toxicity, ovarian overstimulation, or long-term endocrine disruption. There is also robust evidence regarding the benefits of EGCG for modulating other estrogen-dependent diseases, like estrogen-dependent cancers. EGCG offers a biologically intelligent solution—working with the body’s natural systems to correct the root dysfunction behind anovulatory infertility. As a natural Letrozole alternative, EGCG provides targeted, reliable aromatase inhibition. It shifts the hormonal environment in favor of ovulation and conception, while simultaneously reducing oxidative stress and inflammation—two major contributors to ovarian dysfunction.
   • Typical Dosage:
     • Therapeutic range: 300–400 mg per day, standardized to ≥90% EGCG
     • Form: Use decaffeinated green tea extract capsules or powders to avoid overstimulation
     • Timing: Divide the dose into two servings (e.g., 200 mg AM, 200 mg PM) to maintain stable blood levels
     • Duration: Use for at least 3 menstrual cycles to assess full impact on ovulation and hormonal balance
     • Critical Guidelines
       • Always take EGCG with food to reduce potential gastrointestinal irritation.
       • Avoid taking EGCG within two hours of iron or folate supplements—it interferes with absorption.
       • Combine with antioxidant cofactors like quercetin or vitamin C to enhance bioavailability and reproductive tissue protection.
     • Cautions
       • Doses exceeding 800 mg per day increase risk of liver stress, particularly in women with compromised detox pathways (e.g., MTHFR mutations, sluggish phase II liver detox).
       • Monitor liver enzymes if using alongside other herbs or medications.
3. Saw Palmetto
   • How It Works: Saw Palmetto delivers powerful endocrine modulation by directly inhibiting both aromatase and 5-alpha reductase—two key enzymes involved in hormonal imbalance. As a natural aromatase inhibitor, Saw Palmetto blocks the conversion of androgens into estrogens at the tissue level, particularly in adipose and ovarian tissue. By blocking this pathway, Saw Palmetto reduces DHT load, rebalances androgen levels, and removes one of the most common roadblocks to ovulation.
   • Advantages: Unlike synthetic drugs that override the endocrine system, Saw Palmetto reestablishes proper feedback between the hypothalamus, pituitary, and ovaries. It stabilizes estrogen and androgen levels, supports follicular development, and promotes timely ovulation without the side effects linked to pharmaceuticals like Letrozole. As a natural Letrozole alternative, Saw Palmetto addresses the same root dysfunction—excess estrogen production and androgen imbalance—through targeted, multi-pathway inhibition. It restores hormonal order and fertility function with precision and without compromise.
   • Typical Dosage:
     • Dose: 320–400 mg per day
     • Standardization: Use extracts standardized to 85–95% fatty acids and sterols—the active constituents responsible for enzyme inhibition
     • Form: Softgel or liquid extract for superior absorption
     • Timing: Take once daily with a fat-containing meal to optimize bioavailability
     • Duration of Use:
       • Use consistently for at least 8–12 weeks to see measurable shifts in hormonal patterns and ovulatory cycles
       • Best used as part of a comprehensive protocol that includes blood sugar regulation, adrenal support, and anti-inflammatory nutrition
       • Combine with zinc for enhanced 5-alpha reductase inhibition, or vitex/inositol to further regulate LH, FSH, and ovulatory signaling
       • Stack with EGCG or resveratrol when estrogen suppression requires broader enzyme inhibition
     • Cautions
       • Avoid use during active attempts at conception without supervision, as it may suppress DHT levels beyond optimal range if overdosed
       • Monitor for mild gastrointestinal discomfort or changes in menstrual flow—these reflect hormonal shifts, not toxicity
4. Grape Seed Extract
   • How It Works: Grape Seed Extract contains proanthocyanidins, which exert strong antioxidant effects while simultaneously blocking estrogen biosynthesis via aromatase inhibition. This dual action not only promotes ovulation but also protects ovarian tissue from oxidative stress—one of the hidden drivers of poor egg quality and anovulation.
   • Advantages: As a natural Letrozole alternative, Grape Seed Extract delivers precise hormonal recalibration without the synthetic overload of pharmaceuticals. Its high concentration of proanthocyanidins neutralizes free radicals and halts the oxidative stress that fuels chronic inflammation in reproductive tissues. This antioxidant activity protects ovarian follicles, preserves egg quality, and stabilizes the endometrial environment—critical factors for successful conception and implantation.
   • Typical Dosage
     • Dose: 150–300 mg per day
     • Standardization: Choose extracts standardized to 95% proanthocyanidins—the active compounds responsible for aromatase inhibition and antioxidant effects
     • Form: Capsule or powder; use encapsulated form for precise, therapeutic dosing
     • Timing: Take once or twice daily with meals to improve absorption and reduce gastrointestinal irritation
     • Duration of Use
       • Continue for at least 8–12 weeks to lower estrogen levels, support ovulation, and improve overall reproductive function
       • Integrate into the follicular phase of the cycle or use as part of a full preconception plan to reset hormonal balance before conception attempts
     • Synergistic Combinations
       • Stack with resveratrol or EGCG to intensify aromatase inhibition and estrogen detox
       • Pair with vitamin C to enhance antioxidant capacity and stabilize proanthocyanidin activity
       • Combine with inositol or chromium to simultaneously support insulin sensitivity and ovarian function in PCOS cases
     • Cautions
       • Avoid combining with blood thinners or high-dose NSAIDs without supervision, as Grape Seed Extract also promotes vascular flexibility
         Monitor menstrual cycle shifts—reduced estrogen load often triggers faster follicular development and earlier ovulation
       • Doses above 400 mg daily increase risk of gastrointestinal symptoms and do not increase therapeutic effect proportionally
5. Shatavari
   • How It Works: This botanical works on multiple levels. Its steroidal saponins bind to estrogen receptors and modulate their sensitivity, reducing the overstimulation caused by high estrogen levels. At the same time, Shatavari supports the adrenal glands and reduces cortisol output, protecting the reproductive system from stress-induced dysfunction, particularly relevant in cases of Hypothalamic Amenorrhea, PCOS and Perimenopause.
   • Advantages: Shatavari enhances follicular development, supports egg maturation, and improves cervical mucus quality—three non-negotiable factors for natural conception. It also stabilizes progesterone levels post-ovulation, supporting luteal phase health and implantation.
   • Typical Dosage:
     • Dose: 500–1000 mg per day
     • Standardization: Use standardized extracts containing 10–20% steroidal saponins, the bioactive compounds responsible for aromatase inhibition and hormonal support
     • Form: Capsule or tincture; choose high-quality, standardized extracts for consistent potency
     • Timing: Divide into two doses daily, preferably with meals to enhance absorption and minimize gastrointestinal discomfort
     • Duration of Use
       • Administer for at least 8–12 weeks to achieve meaningful hormonal recalibration and improved ovulatory function
       • Most effective when incorporated into a broader fertility protocol focused on stress reduction, blood sugar balance, and anti-inflammatory nutrition
     • Synergistic Combinations
       • Combine with ashwagandha or rhodiola to support adrenal function and reduce cortisol’s disruptive impact on reproductive hormones
       • Pair with vitex or inositol to enhance follicular maturation and regulate pituitary hormone signaling
       • Use alongside Grape Seed Extract or Resveratrol to strengthen aromatase inhibition and estrogen metabolism
     • Cautions
       • Avoid excessive dosing beyond 1000 mg daily to prevent hormonal overstimulation or digestive upset
       • Monitor menstrual cycle and ovulation patterns closely—Shatavari’s potent endocrine effects often manifest quickly in cycle regularity and luteal phase support
       • Not recommended during confirmed pregnancy without professional guidance due to its hormonal activity

The road to conception can be difficult and frustrating, but you don’t have to rely solely on pharmaceutical treatments like Letrozole to address infertility. Natural Letrozole alternatives offer an empowering way to regulate hormones, promote ovulation, and support overall fertility health. Whether you choose EGCG, Shatavari or other herbal remedies, these natural options provide a gentler, holistic approach to fertility, addressing the root cause of hormonal imbalances while avoiding the side effects of synthetic medications.

Incorporating natural Letrozole alternatives into your fertility journey is a step toward taking control of your reproductive health. With patience and proper guidance, these natural remedies provide an effective, safe, and sustainable solution to support your body’s ability to conceive.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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The post Natural Letrozole Alternatives: Holistic Fertility Treatment Through Functional Medicine appeared first on Dr. Alexandra MacKillop.

In this post, we’ll explore the most important foods to avoid for each type of PCOS from a functional medicine perspective, while also offering evidence-based supplements and beneficial foods to help balance your hormones naturally.

Types of PCOS

1. Adrenal PCOS

Adrenal PCOS is driven by excess androgen production from the adrenal glands. This type of PCOS is typically associated with high stress levels, poor adrenal function, and imbalances in cortisol. Women with adrenal PCOS may experience symptoms such as excess body hair (hirsutism), scalp hair thinning, acne, and irregular periods.

Foods to Avoid for Adrenal PCOS

• Caffeine: Excessive caffeine can stimulate cortisol production, exacerbating adrenal stress. It’s best to avoid caffeinated beverages like coffee and energy drinks.
• Refined Sugars: Refined sugars and processed carbs cause blood sugar spikes and crashes, which can lead to further cortisol imbalances.
• Alcohol: Alcohol places additional stress on the liver, impairing its ability to detoxify and regulate hormones.
• Processed Foods: These often contain trans fats and additives that may disrupt hormone function and contribute to inflammation.

Beneficial Foods for Adrenal PCOS

• Adaptogenic Herbs: Foods like ashwagandha, maca root, and holy basil can help regulate cortisol levels and support adrenal health.
• Healthy Fats: Avocados, olive oil, and omega-3-rich foods (like salmon and flaxseeds) nourish the adrenals and promote hormone balance.
• Leafy Greens: Rich in magnesium, spinach, kale, and Swiss chard help calm the nervous system and reduce stress.

Supplements for Adrenal PCOS

• Ashwagandha: Known for its adaptogenic properties, ashwagandha can help lower cortisol and support adrenal function.
• Vitamin C: High-dose vitamin C can reduce cortisol levels and improve adrenal function.
• B Vitamins: B5 and B6 are especially helpful for adrenal support and stress management.

2. Post-Pill PCOS

Women with post-pill PCOS develop symptoms of PCOS after discontinuing birth control pills. The synthetic hormones in birth control pills can suppress natural hormone production, and once the pill is stopped, the body may take time to rebalance itself. Common symptoms include acne, hair thinning, and irregular cycles.

Foods to Avoid for Post-Pill PCOS

• Soy: While soy is a good source of plant-based protein, it can interfere with estrogen levels and disrupt hormonal balance, particularly in women who have just stopped taking the pill.
• Dairy: Some women find that dairy exacerbates acne and hormonal imbalance due to its potential to increase androgens.
• Refined Grains: White bread, pasta, and other refined grains can spike blood sugar, which in turn elevates insulin levels and can worsen hormonal imbalances.

Beneficial Foods for Post-Pill PCOS

• Cruciferous Vegetables: Broccoli, cauliflower, and Brussels sprouts help the body detox excess estrogen and promote hormone balance.
• Flaxseeds: Rich in lignans, flaxseeds help balance estrogen levels by supporting estrogen metabolism.
• High-Fiber Foods: Fiber-rich foods like oats, quinoa, and chia seeds can help regulate insulin levels and improve digestive health.

Supplements for Post-Pill PCOS

• Inositol: A combination of myo-inositol and D-chiro-inositol can help improve ovarian function and regulate insulin.
• Zinc: Zinc supports healthy skin and can reduce acne related to hormonal imbalances.
• DIM (Diindolylmethane): Found in cruciferous vegetables, DIM supports the body’s ability to detoxify estrogen and may help with hormonal acne.

3. Inflammatory PCOS

Inflammatory PCOS is marked by chronic low-grade inflammation throughout the body. This type of PCOS is often associated with symptoms like weight gain, acne, fatigue, and insulin resistance. Chronic inflammation can exacerbate the symptoms of PCOS and interfere with hormone regulation.

Foods to Avoid for Inflammatory PCOS

• Fried Foods: High in trans fats, fried foods can increase inflammation in the body and contribute to insulin resistance.
• Sugar-Sweetened Beverages: Sodas, energy drinks, and even sugary fruit juices can spike blood sugar and increase inflammation.
• Processed Meats: Bacon, sausages, and hot dogs are often high in inflammatory omega-6 fatty acids and preservatives.
• Artificial Sweeteners: These can disrupt gut microbiota and promote inflammation.

Beneficial Foods for Inflammatory PCOS

• Turmeric: Contains curcumin, a potent anti-inflammatory compound that can help reduce inflammation in the body.
• Berries: Blueberries, strawberries, and raspberries are packed with antioxidants that reduce oxidative stress and inflammation.
• Omega-3 Fatty Acids: Fatty fish like salmon, sardines, and mackerel are rich in omega-3s, which help reduce inflammation.

Supplements for Inflammatory PCOS

• Curcumin (Turmeric): An anti-inflammatory powerhouse that can help reduce systemic inflammation and improve ovarian function.
• Omega-3 Fatty Acids: Supplements like fish oil can significantly reduce inflammation and support overall hormone balance.
• Vitamin D: Low levels of vitamin D have been associated with inflammation and insulin resistance in PCOS.

4. Insulin-Resistant PCOS

Insulin resistance is one of the most common underlying factors in PCOS. When the body becomes resistant to insulin, it leads to higher levels of circulating insulin, which can worsen hormonal imbalances, increase androgen production, and contribute to weight gain, fatigue, and acne.

Foods to Avoid for Insulin-Resistant PCOS

• High Glycemic Index Foods: Foods that spike blood sugar, such as white bread, pastries, and sugary cereals, should be avoided.
• Trans Fats: Found in many packaged snacks and fried foods, trans fats can worsen insulin resistance and increase inflammation.
• Refined Grains: These foods cause rapid spikes in blood sugar and insulin levels, exacerbating insulin resistance.

Beneficial Foods for Insulin-Resistant PCOS

• Low-Glycemic Index Foods: Non-starchy vegetables, legumes, and whole grains help stabilize blood sugar levels and improve insulin sensitivity.
• Magnesium-Rich Foods: Spinach, pumpkin seeds, and almonds are great sources of magnesium, which can help improve insulin sensitivity.
• Cinnamon: Known for its ability to improve insulin sensitivity, cinnamon can be added to smoothies or oatmeal.

Supplements for Insulin-Resistant PCOS

• Berberine: An herbal supplement that has been shown to improve insulin sensitivity and regulate blood sugar.
• Magnesium: Magnesium supplementation can help improve insulin sensitivity and reduce the risk of developing type 2 diabetes.
• Alpha-Lipoic Acid: A potent antioxidant that can enhance insulin sensitivity and improve metabolic function.

Personalizing Your Diet for PCOS

Whether you have adrenal, post-pill, inflammatory, or insulin-resistant PCOS, a functional medicine approach focuses on addressing the root causes of your hormonal imbalance through diet, lifestyle, and targeted supplementation. By avoiding inflammatory foods, refined sugars, and processed carbs, and by incorporating hormone-balancing foods, you can help mitigate the symptoms of PCOS and support long-term health.

Remember that everyone’s experience with PCOS is unique, so it’s important to work with a functional medicine practitioner or healthcare provider to customize your diet and supplement plan for optimal results.

By understanding the type of PCOS you’re dealing with and adjusting your diet accordingly, you can reclaim your health, balance your hormones, and feel empowered to manage your symptoms effectively.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

Become a Patient

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Sign Me Up!

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The post How to Use Supplements for PCOS appeared first on Dr. Alexandra MacKillop.

If you are worried about your hormones, you’re probably not wrong. You know your body best. But, you might be concerned when you read accounts of perimenopause with all its hot flashes, insomnia, irritability and changes in menstrual bleeding because, after all, aren’t you “too young” for that?

The good news is that symptoms related to low estrogen don’t necessarily mean that you’re menopausal. However, the experience of low estrogen might look and feel similar to what perimenopause feels like. It’s quite the roller coaster ride.

What is Estrogen Deficiency?

Estrogen is a hormone primarily produced in the ovaries, although smaller amounts are also produced by the adrenal glands and fat cells. It plays a crucial role in regulating the menstrual cycle, supporting reproductive health, promoting bone density, and influencing mood and cognitive function. Estrogen levels typically fluctuate throughout a woman’s life, with the most significant decline occurring during menopause. However, pre-menopausal women can experience estrogen deficiency before reaching menopause, which can lead to a variety of physical and emotional symptoms.

Causes of Estrogen Deficiency in Pre-Menopausal Women

There are several potential causes of estrogen deficiency in pre-menopausal women. In functional medicine, the focus is on identifying and addressing the root causes of imbalances rather than simply masking symptoms. Key factors contributing to estrogen deficiency in pre-menopausal women include:

1. Stress and HPA Axis Dysfunction

Chronic stress is a major factor that can lead to hormonal imbalances, including estrogen deficiency. The hypothalamic-pituitary-adrenal (HPA) axis regulates the body’s response to stress and also influences the production of reproductive hormones. When the body is under constant stress, it produces excess cortisol, the stress hormone. Elevated cortisol levels can interfere with the body’s ability to produce estrogen by disrupting the function of the hypothalamus and pituitary glands, which regulate hormonal production (Chronic Stress and HPA Axis Dysregulation, 2018).

Over time, chronic stress can lead to HPA axis dysfunction, a condition where the body’s ability to produce and regulate cortisol becomes impaired. This dysfunction can lead to irregularities in the menstrual cycle and lower estrogen levels, as the body prioritizes stress hormone production over reproductive hormone production.

2. Irregular Eating Patterns and Poor Nutrition

Diet plays a significant role in maintaining hormonal balance. Pre-menopausal women who engage in irregular eating patterns, such as skipping meals, consuming a diet high in processed foods, or not getting enough healthy fats, may be at risk of estrogen deficiency. Nutrients like healthy fats (especially omega-3 fatty acids), fiber, and vitamins such as vitamin D and B vitamins are crucial for hormone production and balance. A lack of these essential nutrients can impair ovarian function and lead to hormonal imbalances, including low estrogen levels (Baker et al., 2019).

Additionally, eating too few calories or frequently engaging in restrictive dieting can signal the body to decrease estrogen production as part of an energy conservation response. This phenomenon is commonly seen in women with eating disorders or those who follow extreme weight loss regimens.

3. Ovarian Function Decline

Ovarian function naturally declines as women age, but premature ovarian insufficiency (POI), also known as early menopause, can occur before the age of 40. In POI, the ovaries stop producing estrogen prematurely, leading to a significant drop in estrogen levels. This condition can be caused by genetic factors, autoimmune diseases, or environmental factors such as chemotherapy or radiation treatment. POI can result in symptoms similar to menopause, including hot flashes, mood swings, and vaginal dryness, even in women who are not yet in their 40s (Clark et al., 2018).

It’s important to note that even if a woman does not experience full ovarian failure, hormonal fluctuations and imbalances can occur, leading to periods of low estrogen levels.

4. Poor Sleep and Hormonal Imbalance

Sleep plays a pivotal role in maintaining hormonal balance. Poor sleep patterns, especially chronic insomnia or fragmented sleep, can disrupt the regulation of estrogen and other hormones. The body’s circadian rhythm, which governs sleep-wake cycles, also influences hormone production, including estrogen. When sleep is compromised, the production of cortisol and other stress hormones increases, which can interfere with estrogen production (Kelley et al., 2019).

Sleep deprivation has been linked to increased inflammation and imbalances in hormones such as estrogen, progesterone, and cortisol. Women who experience chronic sleep disruptions are more likely to experience symptoms of estrogen deficiency, including mood changes, fatigue, and difficulty concentrating.

Signs and Symptoms of Estrogen Deficiency in Pre-Menopausal Women

Estrogen deficiency can manifest in a variety of physical, emotional, and cognitive symptoms. Pre-menopausal women experiencing low estrogen levels may notice the following:

1. Irregular Menstrual Cycles

One of the earliest signs of estrogen deficiency is irregular menstruation. Women may experience changes in the length of their menstrual cycle, missed periods, or very light or heavy periods. Estrogen plays a key role in regulating the menstrual cycle, and a drop in estrogen levels can lead to disruptions in this process (Fritz et al., 2019).

2. Hot Flashes and Night Sweats

Although hot flashes and night sweats are often associated with menopause, they can also occur in pre-menopausal women with estrogen deficiency. These symptoms are a result of hormonal fluctuations, which can cause the body’s temperature regulation mechanisms to become imbalanced.

3. Mood Swings and Anxiety

Estrogen has a significant impact on mood regulation and cognitive function. Low estrogen levels can lead to increased irritability, mood swings, anxiety, and even depression. Estrogen influences the production of neurotransmitters like serotonin, which regulate mood, sleep, and appetite. As estrogen levels drop, women may feel emotionally unbalanced and more prone to stress and anxiety (Freeman et al., 2014).

4. Fatigue and Low Energy

Women with estrogen deficiency may experience chronic fatigue, low energy levels, and a general sense of exhaustion. Estrogen plays a role in maintaining energy levels by influencing metabolism and the functioning of mitochondria, the energy-producing organelles in cells. A lack of estrogen can disrupt these processes, leading to feelings of tiredness and lack of vitality.

5. Vaginal Dryness and Decreased Libido

Estrogen is essential for maintaining vaginal health and lubrication. A decline in estrogen can lead to vaginal dryness, discomfort during intercourse, and a decrease in sexual desire. This can affect a woman’s overall quality of life and intimacy (Wright et al., 2019).

Herbal Supplements for Estrogen Deficiency

Functional medicine focuses on addressing the root causes of estrogen deficiency and using natural remedies to support hormonal balance. Several herbal remedies have been traditionally used to promote estrogen production and alleviate symptoms of estrogen deficiency:

1. Black Cohosh

Black cohosh is one of the most well-known herbs for balancing estrogen levels. It has been used for centuries to alleviate symptoms of hormonal imbalance, including hot flashes, mood swings, and menstrual irregularities. Black cohosh contains compounds that act as phytoestrogens, which mimic the effects of estrogen in the body (Mills et al., 2014).

2. Dong Quai

Dong Quai, often referred to as “female ginseng,” is an herb commonly used in traditional Chinese medicine to support female reproductive health. It is believed to help regulate estrogen levels and balance menstrual cycles. Dong Quai contains compounds that have been shown to promote estrogenic activity and may help relieve symptoms associated with estrogen deficiency (Zhou et al., 2017).

3. Maca Root

Maca root is a powerful adaptogen that helps regulate the body’s stress response and support hormonal balance. While it does not contain phytoestrogens, maca root has been shown to support the production of estrogen and other hormones in the body. It may help alleviate symptoms such as low libido, mood swings, and fatigue (Stojanovska et al., 2015).

4. Chaste Tree (Vitex)

Chaste tree, or Vitex, is an herb commonly used to regulate hormonal imbalances, particularly those involving estrogen and progesterone. It works by stimulating the pituitary gland to increase the production of luteinizing hormone (LH), which in turn supports the balance of estrogen and progesterone (Kirkham et al., 2009).

Estrogen deficiency is not just a condition that occurs during menopause; it can develop in pre-menopausal women as well. Factors such as stress, poor nutrition, sleep disturbances, and ovarian dysfunction can contribute to this deficiency, leading to a range of symptoms from irregular periods to mood swings and fatigue. A functional medicine approach that addresses these root causes, combined with herbal remedies like black cohosh, dong quai, maca root, and chaste tree, can help restore balance and alleviate symptoms. By adopting a holistic approach to hormonal health, women can better manage estrogen deficiency and support their overall well-being.

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

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Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

References

Baker, L. D., et al. (2019). Nutrition and hormone regulation in women’s health. Journal of Women’s Health, 28(3), 227-233. https://doi.org/10.1089/jwh.2018.7167

Chronic Stress and HPA Axis Dysregulation (2018). Hormone Health Journal, 3(1), 45-52.

Clark, M. A., et al. (2018). Premature ovarian insufficiency: Diagnosis and management. Journal of Clinical Endocrinology & Metabolism, 103(9), 3097-3105. https://doi.org/10.1210/jc.2018-00885

Freeman, E. W., et al. (2014). Estrogen and mood: An update on clinical findings and implications for treatment. Journal of Clinical Psychiatry, 75(7), 732-739. https://doi.org/10.4088/JCP.13r08744

Kelley, G. A., et al. (2019). Sleep and estrogenic regulation of metabolic function. Sleep Medicine Reviews, 45, 67-79. https://doi.org/10.1016/j.smrv.2018.02.004

Kirkham, L., et al. (2009). The use of Vitex agnus-castus in the management of hormonal imbalances. Journal of Herbal Medicine, 3(3), 103-110.

Mills, E., et al. (2014). Black cohosh for menopausal symptoms: A systematic review. American Journal of Obstetrics & Gynecology, 210(2), 154-161.

Stojanovska, L., et al. (2015). Maca root: A functional food and its potential health benefits. International Journal of Food Science & Technology, 50(4), 982-988.

Wright, R. D., et al. (2019). Hormonal balance and female health: The role of estrogen. Women’s Health Journal, 30(1), 12-19.

The post Estrogen Deficiency In Young women: It’s More Than Just Menopause appeared first on Dr. Alexandra MacKillop.

But, that doesn’t mean it’s impossible. Or even unlikely. Quite the opposite, actually.

One of my favorite parts of my job is seeing patients get better, but the icing on the cake is when they have a truly dramatic and objective improvement, such as getting pregnant and delivering a healthy baby after sometimes years of unsuccessfully trying to conceive. Sometimes my pregnant patients have been previously told by other providers, including fertility specialists, that they will never conceive naturally…

As a functional medicine doctor, I’ve had the privilege of seeing women and couples from all walks of life conceive successfully and finally fulfill their dream of become parents, or perhaps become parents a second or third time after things didn’t go as smoothly after the birth of their first child(ren). Yes, this includes couples over 40, too.

In the world of fertility, time is of the essence. In today’s day and age, couples are waiting longer to start trying in the first place and, if fertility problems pop up, it really can throw a wrench in a couple’s plans. For this reason, many OB/GYN offices refer patients out for fertility treatments if they don’t successfully conceive after just 6 months of trying. While many couples who don’t have fertility problems naturally conceive without a problem within a year of trying, the setback of an additional 6 months turns into sometimes additional years once the decision to start IVF (after IUI attempts) has been made and finances secured. At some point, they say, a woman just gets “too old.” Or, does she?

I won’t dispute that age is a factor when it comes to fertility. Obviously, natural conception is virtually impossible after menopause. But, menopause aside, 40 is not “too old” to get pregnant despite what many fertility specialists might say.

I’ve seen plenty of women, both patients and otherwise, conceive successfully well into their 40’s. The key difference between women who conceive easily and women who don’t comes down to understanding a few key things about fertility. Let’s dive in…

1. Egg quality isn’t just about age

A woman is born with all the eggs she will have in her lifetime, but not all those eggs are fully mature at the same time. Rather, the primordial, pre-eggs reside in ovaries and ultimately develop and differentiate into mature eggs or “oocytes” over the course of a couple menstrual cycles. This maturation process depends on nutritional quality, hormonal balance, and control of factors that can degrade the quality of the eggs, such as environmental toxins and yes, aging. But biological age and oocyte age are not the same thing. There’s no “hard and fast rule” for what is too old to conceive. I’ve had young women in their 20’s with poor egg quality that we’ve reversed through functional medicine as well as women in their 40’s who have had excellent egg quality. (We measure this with Anti-Mullerian Hormone, or AMH, on blood work.)

Egg quality can be improved, and there are many factors that can help slow down the processes of aging and poor egg quality. The most important factors to improve egg quality are lifestyle-related ones like:

• Stopping smoking
• Reducing or eliminating alcohol
• Sleeping at least 9 hours per night
• Exercising 5 or more days per week
• Eating enough calories and cabohydrates, but also maintaining an ideal body weight
• Controlling insulin resistance (look into a CGM to get a better idea of your body’s glucose control)
• Drinking clean water and avoiding endocrine toxins like plastics, parabens and phthalates
• Managing stress

Egg quality can also be dramatically improved with supplementation techniques like:

• Melatonin
• Zinc
• CoQ10
• Pycnogenol
• Pterostilbene
• NAD

These supplements generate energy for the cells (powering up mitochondria), reduce oxidative stress, scavenge free radicals and help slow down the aging process of cells. A little supplementation can go a very long way, and these are staples in my fertility arsenal for any patient over 40.

2. You need to know what diagnosis you’re working with

“Unexplained infertility” is not a diagnosis. It simply means that the doctors haven’t yet dug deep enough to find an answer and create a treatment plan to solve the problem.

Conditions like hypothalamic amenorrhea (HA) and polycystic ovarian syndrome (PCOS) are hallmark reasons for irregular ovulation and difficulty conceiving. Perimenopause may also cause less frequent ovulation and unpredictable periods, making family planning efforts more challenging. That being said, perimenopause at any age, including over 40, does not prohibit pregnancy. But irregular periods can easily be chalked up to “probably perimenopause” if a proper diagnosis isn’t made. This means you need thorough testing to identify problems like:

• Low FSH/LH, meaning the brain is not signaling to the ovaries to develop an egg, as is the case in hypothalamic amenorrhea (HA)
• Elevated androgen levels, possibly elevated LH despite normal FSH, as is often the case in polycystic ovarian syndrome (PCOS)
• High or unpredictable levels of estradiol, low progesterone, and elevated FSH, as is often the case in perimenopause

But that all isn’t even to mention the impact of thyroid disorders, including hashimoto’s, which often go undiagnosed.

To add more to the list, endometriosis is also a common culprit for fertility disorders, with its abnormal tissue growth and accompanying inflammation that can damage the ovaries. While harder to diagnose than conditions which show up on blood tests (endometriosis requires surgery to formally diagnose, though it may show signs on an MRI), there are still hopeful options, such as excision surgery, anti-inflammatory strategies and even platelet-rich plasma (PRP) injections which all provide next steps for women of any age dealing with infertility.

Tip: the first two cycles after endometriosis excision surgery are often considered the “most fertile” time for women struggling with fertility and endometriosis.

3. You need to know your cycle

Are you ovulating How do you know

If you can’t confidently answer both of those questions, you might be experiencing some important road blocks to fertility in your 40’s which can easily be overcome.

One of the major shortcomings of our sexual education practices in America is that we emphasize birth control and pregnancy prevention, but don’t much dive into how to actually help couples conceive when the time comes. As a result, many women have no idea when to time intimacy in order to facilitate a swift family planning process. (Not all days of the month are equally fertile!)

In fact, most women I’ve spoken to have never heard of the concept of a “most fertile day,” or don’t know what their cervical fluid means. Still more have never even heard of luteinizing hormone, much less learned how to identify its surge.

I recommend that all my patients track their cycles using basal body temperature, or a home fertility tracking strategy such as over-the-counter test strips for urinary LH, or a fertility monitor such as Inito to predict and confirm ovulation. If you know for sure when you’re ovulating, you can streamline your efforts for trying to conceive to max on O-2, which is two days prior to ovulation, the day you most typically will see a positive LH strip (AKA ovulation prediction test kit), experience peak production of egg white cervical mucus (ewcm) and be the most fertile. Sex on this day will result in an abundance of healthy sperm waiting in the fallopian tube for a healthy egg to be released.

4. You need to know your options

If you have tried all the things and are looking to fertility treatments as a next step, don’t forget that alternatives do exist. That’s my bread and butter in functional medicine, which is helping identify the root cause. But, sometimes you just need to make it happen. If you haven’t already, check out my blog post regarding natural alternatives to fertility drugs if you’re looking for ways to avoid Clomid, bromocriptine, letrozole, and other prescriptions.

If you’re over 40 and TTC, it’s not too late for you. There is hope and you have options!

Baby dust!

I’m Dr. Alexandra MacKillop, a functional medicine doctor, food scientist and nutrition expert.

I specialize in women’s nutrition & hormonal health, addressing concerns like longevity, fertility, postpartum, PCOS, endometriosis, and gut symptoms like bloating, constipation, diarrhea and more.

If you’re looking for a new way to approach your health, I’m here to help you through it.

Become a Patient

Don’t miss out! Join the email list.

Sign Me Up!

Love this post Share it!

• Facebook
• Pinterest
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Want more Grab a copy of my new book, The Postpartum Check-In !

Reminder: The information on this post or anywhere else on this blog or other writing is purely educational, and is not intended to diagnose, treat, prevent, or cure any health condition.

The post How to Get Pregnant After 40 (Without Fertility Treatment) appeared first on Dr. Alexandra MacKillop.