What Do Low AMH Results Mean For Your Fertility?

Anti-Mullerian Hormone (AMH) is one of the most talked-about markers in reproductive health, providing an insight into your hormonal health and ovarian reserve. But receiving a “low” AMH result can feel alarming, especially when you’re not sure what it actually means. The good news is that a low AMH is not a confirmation that you cannot conceive naturally.

In this article, we explore what it means to have a low or out-of-range AMH result, what causes it, and what your options are; whether you’re trying to conceive now, or simply planning for the future.

If you haven’t yet tested your AMH, our Advanced At-Home Hormone & Fertility Test can measure AMH alongside up to nine other key hormones, giving you a personalised, clinically meaningful picture of your reproductive health.

Quick Facts:

• A low AMH result indicates a lower-than-expected ovarian reserve for your age, but does not mean you cannot conceive naturally
• AMH measures egg quantity only, it tells you nothing about egg quality, which is one of the most important factors in conception
• AMH naturally declines throughout life; a low result does not mean you have done anything to cause it.
• Certain factors, including hormonal contraception and some medical conditions can temporarily affect AMH levels.
• Low AMH may have implications for IVF planning and NHS eligibility, but a low result does not close the door on treatment
• Your AMH result should never be interpreted in isolation, it only makes sense alongside your age, other hormones, and clinical history

What is AMH and what does it measure?

Anti-Müllerian hormone (AMH)  is a hormone made by small fluid-filled sacs in the ovaries called follicles, each of which contains an immature egg. Because AMH is made by these follicles, your AMH level gives an indication of how many eggs you have remaining at a given time. This is known as your ovarian reserve.

Unlike hormones such as FSH, oestradiol, and LH, which fluctuate significantly across the menstrual cycle, AMH remains relatively stable. This stability is one of the key reasons it became widely adopted in reproductive medicine: it can be measured on any day of your cycle and still give a meaningful result.

It is worth noting, however, that more recent studies have shown that there may be some slight variation in AMH levels across the menstrual cycle, but this variation remains considerably smaller than that seen in other reproductive hormones. As a result AMH is still considered one of the most stable and reliable markers of ovarian reserve.

AMH is now routinely used when someone is considering undergoing a fertility treatment to estimate how the ovaries are likely to respond to stimulation, guide medication dosage, and determine eligibility for treatment.

For a deeper dive into everything AMH testing can and can’t tell you, including its role in identifying PCOS and guiding fertility treatment, read our full guide: What Does AMH Testing Tell You? 5 Key Insights About Your Fertility

What Does “Low AMH” Actually Mean?

When we refer to “low AMH,” we mean a result that falls below the expected range for your age group. Because AMH naturally declines as you get older, what counts as “low” is always interpreted relative to age-specific reference ranges, not a single universal cutoff.

A low AMH result can suggest that your ovarian reserve may be lower than expected for someone your age. This is sometimes referred to as having a Diminished Ovarian Reserve (DOR). However, it is important to emphasise that a lower ovarian reserve does not automatically mean reduced fertility or an inability to conceive naturally.

The most important thing to understand: AMH measures quantity, not quality

This distinction is worth repeating, because it is the most common source of confusion and unnecessary distress after receiving a low AMH result.

AMH tells you about egg quantity. It does not tell you anything about egg quality.

Egg quality i.e. how healthy eggs are, how likely they are to be fertilised, and how likely they are to develop into a viable embryo is influenced primarily by age and genetics. Currently there is no reliable way to measure it directly outside of accessing embryos created during IVF.

This matters enormously in practice. Research consistently shows that AMH levels alone are not strongly predictive of natural pregnancy rates. People with low AMH conceive naturally every day. Conversely, a normal or high AMH result does not guarantee fertility. Fertility is shaped by many factors: ovulation, sperm health, Fallopian tube function, uterine health, and overall wellbeing.

In short: a low AMH result is not a diagnosis of infertility.

Hertility’s own research found no significant association between low AMH and risk of miscarriage or recurrent pregnancy loss, an important finding that further underscores the limitations of AMH as a standalone predictor of pregnancy outcomes.

What Causes Low AMH?

In most cases, there is no single identifiable “cause” of a low AMH level in the way we typically think about causes of illness. It is important to know that if you have received a low AMH result, nothing you’ve done has caused this.

AMH levels follow a natural trajectory across the reproductive lifespan; it peaks in the early-to-mid twenties, and then gradually declines toward menopause. This decline is a normal part of reproductive ageing, and the rate at which it happens varies between individuals, largely due to genetics.

Some factors that may be associated with lower AMH levels include:

• Age – the most significant driver of declining AMH
• Genetics – family history can influence the rate of ovarian ageing
• Previous ovarian surgery – procedures to remove ovarian cysts or tissue (for example endometriosis) may reduce ovarian reserve
• Certain autoimmune conditions – which can affect ovarian function, for example Hashimoto’s disease, rheumatoid arthritis, and Addison’s disease.
• Cancer treatment – some types of chemotherapy and radiotherapy are referred to as gonadotoxic (i.e. toxic to the gonads such as the ovary) which can impact the ovaries
• Hormonal contraception – can cause a temporary, reversible reduction in AMH levels, typically by 15% to 30% and discussed further below

Can You Improve Low AMH Levels?

This is one of the most common questions we receive after a low AMH result, and it is worth being honest: there is currently no clinically proven intervention that can meaningfully raise AMH levels or restore ovarian reserve.

If you have come across supplements, herbal remedies, or lifestyle protocols that claim to increase AMH, it is important to approach these with caution. While some small studies have explored nutrients such as CoQ10, DHEA, and vitamin D in the context of ovarian reserve, the evidence is not currently strong enough to support recommending any of these as effective treatments.

There are also emerging experimental approaches, such as ovarian rejuvenation techniques, including platelet-rich plasma (PRP) therapy, that have received attention in recent years. These are not yet considered standard or proven treatments, and are not currently recommended outside of research settings. If you are interested in exploring these options, we recommend discussing them with a reproductive medicine specialist rather than pursuing them independently.

What can support your reproductive health

While lifestyle changes will not reverse a declining ovarian reserve, certain factors are well-established as supporting overall reproductive health and hormonal wellbeing:

• Stopping smoking – smoking is associated with accelerated ovarian ageing and earlier menopause
• Reducing alcohol intake – excessive alcohol consumption is associated with poorer fertility outcomes
• Maintaining a balanced diet – a diet rich in antioxidants, healthy fats, and micronutrients supports hormonal health
• Achieving a healthy weight – both underweight and overweight can affect hormone balance and ovulation
• Managing stress – chronic stress can disrupt the hormonal axis that regulates the menstrual cycle

The focus with low AMH is less about trying to raise a number, and more about informed planning, understanding what your result means for you, and making decisions about your reproductive health with full clinical support.

Could Low AMH Indicate Perimenopause, Menopause, POI or DOR?

In some cases, very low AMH may prompt further investigation into the following conditions:

Perimenopause and Menopause – Menopause is defined as the natural, permanent end of menstruation and fertility, diagnosed after 12 consecutive months without a period typically between the ages of 45 and 55, with the average age in the UK being 51. As the ovarian reserve diminishes in the lead up the menopause (known as the perimenopause), AMH levels reduce. While AMH is not currently recommended as a standalone diagnostic tool for menopause or perimenopause, declining AMH can be a useful indicator of overall ovarian ageing.

It is a common misconception that a low or declining AMH result means you will reach menopause earlier than average, or that it can tell you when menopause will occur. While AMH levels do fall as the ovarian reserve diminishes, research has consistently shown that AMH cannot accurately predict the timing of menopause at an individual level. It may give a broad indication that the ovarian reserve is declining, but it cannot provide a reliable timeframe. If you have concerns about early menopause or your ovarian reserve, we recommend speaking to a clinician for a full assessment.

Premature Ovarian Insufficiency (POI) – is a condition where the ovaries stop functioning as expected before the age of 40. It affects approximately 1 in 100 people assigned female at birth. Significantly low AMH in a younger individual may warrant investigation into POI. If POI is suspected, we recommend seeking a referral to a fertility specialist and referring to the current ESHRE guidelines on POI management for guidance and next steps, monitoring, and long-term health considerations.

Diminished Ovarian Reserve (DOR) – is a term used to describe ovarian reserve that is lower than expected relative to age. It is not a diagnosis of infertility, but it may have implications for fertility treatment planning, including how the ovaries are likely to respond to stimulation during IVF.

Does hormonal contraception affect AMH levels?

If you are currently using hormonal contraception, it is important to be aware that this may affect your AMH result.

Research suggests that some forms of hormonal contraception, in particular the combined oral contraceptive pill (COCP), can temporarily suppress AMH levels by approximately 20-30%. However, this effect is not consistent across all individuals or all types of contraception, and the reasons for this variation are not yet fully understood.

Reassuringly, studies show that suppression of AMH caused by hormonal contraception is temporary and reversible. Levels typically return to what is normal for that individual after stopping contraception. If you are currently using hormonal contraception and planning to come off it or want the most accurate reflection of your baseline AMH, Hertility recommends waiting approximately 3 cycles after stopping before testing.

That said at Hertility, AMH testing while using hormonal contraception is not without value and we do still include AMH testing in people using hormonal contraception. Even with some degree of suppression, AMH results can still provide clinically useful information, particularly in identifying very low ovarian reserve or patterns suggestive of PCOS.

Should you be worried about trying to conceive with low AMH?

We understand that receiving a low AMH result, especially if you are trying to conceive or thinking about future fertility, can feel overwhelming. It is natural to feel worried or disheartened.

But it is important to know that AMH cannot predict your ability to conceive.

Studies consistently show that AMH levels alone are not a reliable predictor of natural pregnancy rates. Many people with low AMH conceive naturally, and the relationship between ovarian reserve is far more nuanced than a single number can capture.

If you are trying to conceive and have concerns about your AMH levels, booking a Clinical Reproductive Care Consultation is a good next step. This consultation is built around your Hertility test results, allowing our clinical team to provide context and clarity on your results and guide next steps in a personalised way.

This is also directly supported by current NICE guidance (NG257, 2026), which recommends that AMH should not be used as a predictor of clinical pregnancy through spontaneous conception – reinforcing that a low result alone is not a reason to panic about your ability to conceive naturally.

How does Low AMH affect IVF treatment?

Low AMH has more direct implications for fertility treatment than for natural conception, because IVF relies on stimulating the ovaries to produce multiple eggs for retrieval. A lower ovarian reserve means the ovaries are likely to produce fewer eggs in response to stimulation medication, which can reduce the number of embryos available and affect the cumulative success rate per cycle.

However, fewer eggs does not mean no eggs, and successful IVF cycles do occur with low AMH or in some cases consideration of donor eggs.

NHS IVF eligibility and AMH thresholds

Access to NHS-funded fertility treatment, including IVF, is subject to local eligibility criteria set by Integrated Care Boards (ICBs) across the UK. These criteria can vary significantly depending on where you live.

In many areas, a minimum AMH level of 5.4-5.5 pmol/L is required to access NHS-funded IVF. This threshold exists because very low AMH levels are associated with a poorer response to ovarian stimulation, which can affect the viability of an IVF cycle. AMH is just one of several eligibility criteria, alongside age, BMI, and whether you have previously had fertility treatment

It is also worth knowing that AMH testing itself is not routinely available on the NHS for people who are simply curious about their fertility or planning for the future. NHS funded AMH testing is typically only offered to individuals who:

• Have been trying to conceive through regular unprotected intercourse for 12 months (or 6 months if aged 35 or over) without success
• Are single individuals or same-sex couples who have undergone a specified number of cycles or unstimulated artificial insemination without conceiving
• Have a known or suspected reproductive health condition affecting themselves or their partner

Because NHS policies are set locally, eligibility criteria, including AMH thresholds for IVF – can vary across different regions. If you are unsure about your eligibility or local guidelines, we recommend speaking to your GP, who can advise on the options available to you in your area.

How Hertility interprets your AMH result

At Hertility, we use age-stratified reference ranges to interpret your AMH results. This means your result is not compared to a single cutoff, but against the expected range for other healthy individuals in your age group.

These reference ranges are derived from published population data and clinical evidence, and are reviewed to ensure they reflect current scientific evidence. Interpreting AMH in this way allows us to give you a more accurate and contextually meaningful result, rather than labelling a result as being “low” when it may reflect normal reproductive ageing for your stage in life.

We believe everyone deserves access to clear, evidence-based information about their reproductive health, without having to wait until an issue arises.

Our Advanced At-Home Hormone & Fertility Test measures AMH alongside up to nine other key hormones, and your results are interpreted by our clinical team in the context of your individual online health assessment (OHA) our clinically validated screening tool that embeds the diagnostic criteria from leading international bodies including RCOG, ASRM, ACOG, ESHRE, and NICE to assess risk of fertility decline and screen for 18 of the most prevalent conditions affecting reproductive health.

The OHA captures your symptoms, biometrics, menstrual factors, and life stage to enable a tailored hormone panel, the combination most likely to be informative for you specifically, and able to confirm any suspected diagnoses. Rather than simply telling you whether your AMH is “high,” “normal,” or “low,” this approach means your result is always interpreted with full clinical context.

Because no single hormone tells the whole story, your AMH result is also never assessed in isolation. At Hertility, it is interpreted alongside up to nine other reproductive hormones, including FSH, LH, oestradiol, testosterone, prolactin and thyroid hormones, as well as a detailed clinical history. This allows us to screen for up to 18 reproductive and hormonal health conditions and provide a truly personalised assessment.

Frequently asked questions about low AMH

Can you get pregnant naturally with low AMH?
Yes. Research shows that AMH levels alone are not a reliable predictor of natural pregnancy rates. Many people with low AMH conceive naturally. AMH measures egg quantity, not egg quality or your ability to ovulate, and it is egg quality, not quantity that is most predictive of natural conception.

What is considered a low AMH level in the UK?
In the UK, AMH is measured in pmol/L. What counts as “low” depends on your age. As a general guide, AMH below 5.4 pmol/L is associated with a low response to IVF stimulation and is commonly used as the threshold by NHS ICBs. Hertility uses age-specific reference ranges to interpret results a result that looks “low” on a generic scale may be within the expected range for your age group.

What causes low AMH levels?
The most common cause is age, AMH naturally declines throughout the reproductive lifespan. Other associated factors include genetics, previous ovarian surgery, endometriosis, certain autoimmune conditions, cancer treatment, and some forms of hormonal contraception (which can temporarily suppress AMH by 20–30%).

Can low AMH levels improve?
AMH cannot be meaningfully increased in the way other health markers can be improved. Some research suggests that certain nutritional factors and lifestyle choices may influence the rate of decline, but there is no intervention currently proven to restore ovarian reserve. The focus should be on informed planning rather than trying to raise a number.

Does low AMH mean I’ll have an early menopause?
Not necessarily. AMH is not a reliable individual predictor of when you will reach menopause, it can indicate overall ovarian ageing at a population level, but individual variation is large. A low AMH for your age is worth discussing with a clinician, particularly if you have symptoms of perimenopause, but it is not a definitive signal of early menopause.

Does hormonal contraception affect AMH test results?
Yes. The combined oral contraceptive pill in particular can suppress AMH by approximately 20–30%. This effect is temporary and reversible. For the most accurate baseline reading, Hertility recommends waiting approximately three months after stopping hormonal contraception before testing.

Can I access NHS IVF with low AMH?
Eligibility for NHS-funded IVF depends on local ICB criteria, which vary across the UK. Many areas require a minimum AMH of 5.5 pmol/L. Speak to your GP about the specific criteria in your region.

References

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