Low AMH and Declining Ovarian Reserve: What It Means

A low AMH result tells you how many eggs are likely to be collected in a stimulated cycle. It does not tell you that you cannot conceive. The American Society for Reproductive Medicine committee opinion on testing and interpreting measures of ovarian reserve finds that markers of ovarian reserve are good predictors of egg yield but poor independent predictors of reproductive potential, and states they should not be used as a fertility test or to deny access to treatment. There is also no treatment that raises AMH or restores ovarian reserve. What can be done is to plan around the reserve you have, which usually means acting sooner rather than later.

What is ovarian reserve?

A woman is born with her full supply of eggs and that number falls over her lifetime. Ovarian reserve is the size of the remaining pool. It declines with age in everyone, and can decline earlier because of ovarian surgery, chemotherapy or radiotherapy, some autoimmune and genetic conditions, or for no identifiable reason.

Reserve is about quantity. Egg quality is a separate matter and tracks age rather than AMH, which is why a young woman with low AMH is in a different position from an older woman with the same result.

What does an AMH test actually tell you?

AMH is produced by small follicles in the ovaries, so the level reflects roughly how many are left. It is usually measured alongside an antral follicle count on ultrasound.

Its established use is predicting how you will respond to ovarian stimulation, which helps a specialist choose a protocol and set expectations about how many eggs a cycle might yield. That is genuinely useful. What it does not do, according to the ASRM committee opinion, is predict your chance of conceiving naturally. Low AMH in a woman with regular cycles is not evidence that she cannot conceive.

Our article on low AMH with regular periods covers this in more detail.

Can low AMH or declining reserve be treated?

No treatment has been shown to increase AMH, increase the number of eggs remaining, or slow the rate at which reserve declines. Be cautious of any supplement, therapy or program presented as doing so.

What can be addressed is the situation around it:

• Where an underlying condition is contributing, treating that condition is worthwhile in its own right.
• Where treatment such as chemotherapy is planned, egg freezing beforehand preserves eggs at their current state. This is time-critical and should be raised before treatment starts. See our article on fertility and cancer treatment.
• Where reserve is declining with age, the response is to plan around it. Freezing eggs now preserves them at today's age; proceeding with treatment sooner uses the reserve available now rather than a smaller one later.
• In an IVF cycle, the stimulation protocol can be tailored to a lower expected response. This changes how the cycle is run, not how many eggs you have.

What does low AMH mean for IVF?

Generally that fewer eggs will be collected per cycle, which means fewer embryos and often more cycles to reach the same point. It does not mean the eggs collected are of poor quality; that follows age.

Ask your specialist what response they expect from your specific numbers, how many cycles they would anticipate, and what the plan is if the first cycle yields fewer eggs than hoped. Those are more useful questions than the AMH figure on its own.

We at Millennium IVF Clinic will assess ovarian reserve as part of planning treatment and explain what your results mean for your options. Initial consultations are free, and you can arrange one with our team.

Frequently asked questions

Does low AMH mean I am infertile?

No. The ASRM committee opinion states ovarian reserve markers are poor independent predictors of reproductive potential and should not be used as a fertility test. Many women with low AMH conceive.

Can I raise my AMH?

No treatment or supplement has been shown to increase AMH or restore ovarian reserve. A test result may vary between measurements, but that reflects measurement variation rather than a real increase.

Should I have my AMH tested if I am not trying to conceive yet?

It can inform a decision about egg freezing, but a result on its own does not predict whether you will conceive naturally later. Discuss what you would do differently depending on the result before having the test.

Does low AMH mean my eggs are poor quality?

No. AMH reflects quantity. Quality tracks age, which is why a younger woman with low AMH is in a different position from an older woman with the same result.