A lot of women hear “your AMH is low” and walk out of the appointment believing the door to a natural pregnancy is closing. The number is real. The story attached to it is usually incomplete.
If a clinic told you that low AMH means diminished ovarian reserve, the first thing worth doing is taking a breath. AMH is one data point, and it was never built to tell you whether you can get pregnant on your own. Here is what it actually measures, and what you can do with the next 90 days.
What “diminished ovarian reserve” actually means
Your ovaries hold all the eggs you were born with, and that number declines with age. Diminished ovarian reserve, or DOR, means you have fewer eggs than someone typical for your age. It is a comparison against an age-based range, and nothing more.
The cutoffs vary by clinic, and there is no single universal number. A lot of clinics use an AMH below 1.0 to 1.2 ng/mL, or an antral follicle count below five to seven, as the ranges that are flagged as low.
AMH is a hormone made by small developing follicles, so more follicles means a higher number. The antral follicle count is a separate measurement, where a doctor counts visible follicles on ultrasound. Both give a rough picture of egg reserve.
AMH also drops with age. By around 36 it is more common to see an AMH below 1.2 ng/mL, and by 44 the majority of women sit below that line. So one of the first questions worth asking is whether your result is actually low for your age, or normal for where you are in life. Those are very different conversations.
A few terms get mixed up in this space, and the distinctions matter.
| Term | What it means |
|---|---|
| Diminished ovarian reserve (DOR) | Fewer eggs than typical for your age. A comparison against an age-based range. |
| Premature ovarian insufficiency (formerly premature ovarian failure) | The ovaries stop working as they should before age 40. A separate diagnosis with different implications. |
| Poor ovarian responder | An IVF term for ovaries that produce fewer eggs than expected when stimulated with fertility medication. |
Grouping these three together is where a lot of unnecessary fear comes from. They are not the same thing.
What AMH predicts, and what it does not
AMH was developed as a planning tool for IVF: how aggressively to stimulate the ovaries, what medication dose fits, roughly how many eggs to expect at retrieval. It does that job well. It was not built to tell a woman in a clinical appointment whether she can conceive naturally.
Several major medical bodies have said so directly. The American College of Obstetricians and Gynecologists and the American Society for Reproductive Medicine both advise against using AMH to predict natural fertility or counsel women about their reproductive potential.
The research backs them up. A 2021 systematic review and meta-analysis in Frontiers in Endocrinology concluded that serum AMH has poor predictive value for natural pregnancy, and that a decreased AMH level does not represent decreased natural fertility in younger or older women. Natural pregnancies have been documented at AMH levels far below what gets labeled low, including at undetectable levels, in women ovulating on their own and conceiving without medication.
Quantity is not the same as quality
This is the distinction that changes how you read your number. AMH reflects egg quantity. Egg quality is something else entirely: whether a given egg is genetically healthy enough to fertilize and grow into a viable embryo. AMH tells you nothing about that.
Every cycle, your body should release one egg, and that egg either has the genetic integrity to result in a pregnancy or it does not. Quality is driven mostly by age, plus diet and lifestyle, not by how many eggs are in reserve. So a woman with an AMH of 0.6 can absolutely conceive before a woman with an AMH of 3.5. If both are releasing one egg per cycle, what matters is whether that egg is healthy.
For IVF, both quantity and quality matter, but having more eggs retrieved generally increases the chances of creating more embryos, having more embryos available for testing, and ultimately having more opportunities for transfer and pregnancy. For natural conception, the focus is less on producing many eggs and more on consistently ovulating one healthy, high-quality egg each cycle.
The 90-day window you can actually use
Here is the part you can do something with. 90 days is roughly how long an egg takes to move from its earliest resting stage to ovulation-ready. Every egg you release spent about three months maturing first, and the environment it develops in during that window affects its quality. Two things shape that environment: oxidative stress (cellular damage from unstable molecules) and the energy available inside the egg cell.
- CoQ10. Coenzyme Q10 is an antioxidant your cells use to make energy in the mitochondria, and egg cells lean heavily on that energy to mature correctly. A 2018 randomized controlled trial in Reproductive Biology and Endocrinology followed 186 young women with decreased ovarian reserve. Those who took 600 mg of CoQ10 daily for 60 days before IVF had more eggs retrieved, a higher fertilization rate, and more high-quality embryos. It is fat-soluble, so it absorbs better split across meals that contain fat. Notably, AMH and antral follicle count did not change in that study. The quality markers shifted while the reserve markers stayed the same, which is the whole point.
- Vitamin D. A lot of women are deficient without knowing it. Vitamin D is fat-soluble, so it gets stored and can build up to harmful levels if over-supplemented, which is exactly why the approach is to test, not guess. In my practice I generally check vitamin D twice a year, use a higher dose to rebuild stores when someone comes back low, then drop to maintenance once levels are where they should be. Two cofactors matter at meaningful doses: vitamin K2, which directs the extra calcium you absorb toward bones and teeth rather than soft tissue, and magnesium, which your body needs to activate vitamin D. Take it with a meal that contains fat to maximize the absorption.
- DHEA. DHEA is a hormone made by the adrenal glands that acts as raw material for estrogen and testosterone and plays a role in follicle development. A 2024 systematic review and meta-analysis in Annals of Medicine of 16 studies involving nearly 2,800 women with diminished ovarian reserve found that supplements such as CoQ10 and DHEA were linked to lower FSH levels, higher AMH levels, higher antral follicle counts, and improved pregnancy rates.
There is an important caveat with DHEA. Unlike vitamins and minerals, DHEA is a hormone. In Canada, it is a controlled substance and requires a prescription from a licensed physician. As a naturopathic doctor in Ontario, I cannot prescribe or monitor DHEA. This is a conversation to have with your medical doctor, who can assess your hormone levels and monitor you appropriately. This is especially important if you have PMOS (polyendocrine metabolic ovarian syndrome, formerly PCOS), as DHEA may increase androgen levels and could worsen symptoms in some women.
The egg quality piece is where most of the modifiable opportunity sits, and it is the same window I write about in endometriosis and egg quality if you want the mechanism in more detail.
Questions worth bringing to your next appointment
AMH is just one piece of the puzzle. To understand the bigger picture, consider asking these questions:
- What AMH level does this clinic use to define diminished ovarian reserve, and where does my result fall?
- What are my antral follicle count and FSH levels? I understand that AMH is only one piece of the picture.
- Based on my ovarian reserve, what treatment approach would you recommend, and how many eggs would be a realistic expectation?
- What are your thoughts on following a 90-day egg-quality support plan, and can we check my vitamin D level?
What to do next
Your AMH is data, not a verdict. It speaks to quantity and says nothing about the quality of the egg you release each cycle, which is what natural conception depends on.
The 90 days leading up to your next cycle are an opportunity to focus on factors that may support egg quality. This could include taking CoQ10, having your vitamin D level tested, and discussing whether DHEA is appropriate for you with a prescribing physician. None of these approaches can guarantee a specific outcome, and they do not replace individualized medical care. However, the egg that will be released in your next cycle is still developing during this time.
If you want to see how your hormones fit together more broadly, the guide on naturopathic support for hormonal imbalance is a good starting point. And if you are in Ontario and want to map out a plan for the next few cycles, you can book an appointment. One step at a time, you do not need to change everything at once.