A Sudden Drop in AMH May Not Be Just an Age Issue: 4 Everyday Habits Many Women Trying to Conceive Overlook

A Sudden Drop in AMH May Not Be Just an Age Issue: 4 Everyday Habits Many Women Trying to Conceive Overlook

When many women first see their AMH (anti-Müllerian hormone) test result, they have a question: “Why is my AMH lower than other people’s?” Some believe it is a natural change caused by aging, while others begin searching for various so-called “AMH-boosting” methods.

In fact, AMH is a hormone produced by the granulosa cells of small growing follicles in the ovaries. To some extent, its level can reflect ovarian reserve, so in fertility assessment and IVF treatment, doctors often use it to predict how the ovaries may respond to ovarian stimulation and the possible number of eggs retrieved. It is especially important to note, however, that AMH does not equal egg quality, nor can it alone represent a woman’s natural ability to conceive. Age remains an important factor affecting egg quality and the rate of chromosomally normal embryos.

For women who are trying to conceive, preparing for third-generation IVF in Thailand, or beginning to learn about overseas fertility treatment and cross-border family building, understanding AMH correctly is more important than simply chasing a “beautiful number.” So what factors in daily life may be related to changes in AMH? We can look at this from two angles: authoritative research and real-life habits.

01 | Authoritative Research Finds: Lifestyle May Affect AMH Levels

In 2024, Human Reproduction Update published a systematic review on the relationship between lifestyle and AMH. The research team searched databases for relevant studies, ultimately including 65 studies, and analyzed the relationships between factors such as BMI, smoking, oral contraceptives, physical activity, alcohol consumption, caffeine, and waist-to-hip ratio and AMH. The results showed that higher BMI, smoking, and oral contraceptive use were associated with lower AMH levels; meanwhile, in different populations, correlations between physical activity and AMH were also observed. In contrast, current evidence has not found a clear and consistent relationship between alcohol consumption, caffeine intake, or waist-to-hip ratio and AMH.

However, one very important concept in medical research must be emphasized here: “an association” does not equal “a proven causal relationship.” This systematic review itself also points out that current related studies differ in study design, sample size, and evidence quality, so it cannot be simply concluded that “changing a certain lifestyle habit will definitely increase AMH.”

Therefore, rather than focusing entirely on “how to quickly increase AMH,” it is better to first understand which lifestyle factors are worth actively managing.

02 | The First Factor: Abnormal BMI—Both Too High and Too Low Weight Deserve Attention

Many people believe that the lighter the body weight, the healthier, but women’s reproductive health is not simply a matter of “the thinner, the better.” Excessively high body weight may be accompanied by insulin resistance, metabolic abnormalities, and endocrine disorders, which can affect ovulation and overall reproductive health; long-term extreme dieting, too-low body weight, or inadequate nutrient intake may similarly affect normal menstrual cycles and ovulation.

In existing research, some studies have observed a statistical association between higher BMI and lower AMH, but results across studies are not completely consistent, so it should not be simply understood as “the higher the BMI, the worse the ovarian reserve must be.” For women preparing to conceive, it is more important to pay attention to whether their weight is within a relatively reasonable range, while also considering menstrual patterns, ovulation, and whether conditions such as PCOS or insulin resistance are present for a comprehensive assessment.

If undergoing IVF treatment, do not focus only on a single AMH number. Doctors usually also consider age, basal hormone levels, antral follicle count, and previous ovarian stimulation response to assess ovarian reserve and develop a more suitable stimulation protocol.

03 | The Second Factor: Smoking May Accelerate Aging of the Female Reproductive System

The health effects of smoking are not limited to the lungs. Tobacco smoke contains multiple harmful substances, and long-term exposure may increase oxidative stress and affect cellular inflammation, apoptosis, and mitochondrial-related functions. Regarding AMH, a considerable portion of existing studies have observed lower AMH levels in women who smoke, and smoking has also been linked to female reproductive aging and earlier menopause.

However, these findings should also be viewed scientifically: current research mainly shows statistical associations and cannot prove, based only on changes in AMH, that smoking directly causes a decline in ovarian reserve. Nevertheless, from the perspective of preparing for pregnancy and reproductive health, reducing tobacco exposure remains a clearly worthwhile health measure.

Especially for families preparing for third-generation IVF in Thailand or other assisted reproductive treatment, not only should women actively quit smoking, but male partners should also try to avoid smoking and long-term exposure to secondhand smoke. Reproduction is never a one-sided issue; male sperm quality can also affect fertilization, embryo formation, and subsequent reproductive processes.

04 | The Third Factor: Long-Term Oral Contraceptive Use—Lower AMH Does Not Necessarily Mean Ovarian Decline

This point can easily cause misunderstanding among women. Some women who undergo AMH testing while taking combined oral contraceptives find that the result is lower than before and worry that their ovarian function has declined.

In fact, oral contraceptives prevent pregnancy by inhibiting ovulation, and the hormonal environment they create may also have temporary effects on follicle recruitment and related hormone levels. Related studies have found a relatively consistent association between oral contraceptive use and lower AMH levels, and some studies have observed that AMH levels may rebound to some extent after discontinuation.

Therefore, if a woman is taking hormonal contraceptives or has just stopped, she should proactively tell her doctor when interpreting an AMH report. Especially when preparing to enter an IVF cycle, it is not advisable to label oneself as having “premature ovarian failure” simply because of one drop in AMH. Doctors usually make a comprehensive assessment based on multiple indicators, including age, AMH, basal FSH, LH, E2, antral follicle count, menstrual status, and history of ovarian surgery.

A single test indicator can provide important information, but it cannot replace a complete fertility evaluation.

05 | The Fourth Factor: Exercise Is Not a Case of “the More, the Better”—Moderation and Individualization Are Key

The relationship between exercise and AMH is relatively complex. Especially in women with polycystic ovary syndrome (PCOS), some studies have found that AMH levels may decrease after regular exercise, but this should not be simply understood as “exercise damaging the ovaries.”

For people with PCOS, AMH itself may be abnormally high, which is related to abnormal follicle development and recruitment patterns. Therefore, in some patients, a decrease in AMH after exercise does not necessarily mean that ovarian reserve has worsened; it may instead be related to improvements in metabolic status, insulin sensitivity, and the hormonal environment.

So “higher AMH” should not be simply understood as “better ovaries,” nor should “lower AMH” be directly equated with “declining ovarian function.” For most women trying to conceive, regular, moderate exercise remains an important part of maintaining overall health. What truly deserves caution is long-term overtraining, extreme dieting, excessively low body fat, and a persistent state of energy deficiency.

06 | After AMH Is Found to Be Low, What Should You Actually Do?

After seeing a low AMH, many women’s first reaction is to look for “AMH-boosting” medications, supplements, or so-called ovarian conditioning programs. In reality, however, there is currently no fully proven medication that can simply and directly restore AMH to an ideal value, and there is no reliable evidence that increasing AMH alone will necessarily improve natural pregnancy or IVF success rates.

Therefore, after finding a low AMH, the first step should be to confirm the result and conduct a comprehensive evaluation. Different laboratories may use different testing platforms and reference ranges. If the result is clearly abnormal, a repeat test may be done according to a doctor’s recommendation, while also considering AFC (antral follicle count), basal hormones, menstrual status, age, and previous reproductive history.

The second step is to look for factors that may affect fertility, such as smoking, significant overweight or underweight, PCOS, endometriosis, history of ovarian surgery, and previous chemotherapy or radiotherapy.

The third step is to reasonably plan timing based on your age and actual reproductive plans. Especially for women who are older, have low AMH, and have a clear desire to have children, rather than agonizing every day over “whether I can raise AMH from 0.8 to 1.5,” it is more useful to truly understand your ovarian reserve and whether your future reproductive plans match it.

The focus of fertility management has never been the pursuit of a perfect AMH number, but rather making a fertility plan that suits you at the right time.

07 | What Is Truly Worth Doing Is Reducing Avoidable Ovarian Damage as Much as Possible

There is currently no reliable method to restore follicles that have already been depleted, so the idea of “reversing ovarian age” should be viewed with caution. For women, a more realistic approach is to reduce factors that may affect reproductive health while maintaining good overall physical condition.

In daily life, you can start with several areas: try to avoid tobacco and long-term secondhand smoke environments; maintain a reasonable weight, avoiding long-term obesity as well as dieting in pursuit of excessive thinness; exercise regularly according to your physical condition; maintain relatively stable sleep and daily routines; and in terms of diet, do not rely on any so-called “miracle fertility food.” More importantly, ensure a relatively balanced intake of protein, vegetables, fruit, whole grains, and healthy fats, and reduce long-term, excessive intake of high-sugar and highly processed foods.

If conditions such as ovarian cysts or endometriosis require ovarian-related surgery, you should also fully communicate with a professional doctor in advance to assess the necessity of surgery and its possible impact on ovarian reserve. For women who have clear future reproductive plans, protecting existing ovarian reserve is often more important than later searching for ways to “restore the ovaries.”

08 | Are Nutritional Supplements Useful? Do Not Mistake “Nutritional Support” for “Increasing AMH”

Coenzyme Q10, vitamins, and other antioxidant-related nutrients have long received attention in the fields of preconception preparation and assisted reproduction, but at present, no single nutritional supplement should be simply promoted as a universal solution to “increase AMH,” “repair the ovaries,” or “improve IVF success rates.”

If there is a clear nutritional deficiency, or if a doctor recommends certain nutrients based on your individual situation, supplementation can be carried out under professional guidance. Especially for women preparing for third-generation IVF in Thailand, it is even less advisable to stack large amounts of supplements on their own without evaluation. Truly reasonable nutritional management should be based on age, dietary status, laboratory tests, medical history, and actual reproductive plans—not on “whatever others take, I take too.”

In other words, the focus of nutritional supplementation is not “the more, the better,” but making targeted adjustments according to individual circumstances.

09 | Why Can’t Improving Fertility Be About AMH Alone?

After receiving test reports, many women focus all their attention on AMH, but female fertility is actually a complex, integrated system.

From ovarian reserve to egg quality, from ovulation to the fallopian tubes and uterine environment, and then to male sperm quality, fertilization, embryo development, and finally implantation, every step can affect the final reproductive outcome. Therefore, even if AMH is within the normal range, it does not mean pregnancy will necessarily occur smoothly; similarly, a low AMH does not mean natural pregnancy is impossible or that pregnancy cannot be achieved through IVF.

This is also why clinical evaluation never looks at just one number.

If you are already experiencing difficulty trying to conceive, or are considering assisted reproductive treatment, it is even more important to analyze age, ovarian reserve, factors related to egg quality, male semen status, uterine and fallopian tube conditions, and previous reproductive history together before deciding on the next step.

10 | Preparing for Overseas Fertility Treatment: Tests and Planning Should Be Done in Advance

For families preparing for overseas fertility treatment and cross-border family building, many things should not wait until after arriving in Thailand to be considered.

While still in your home country, you can organize previous test reports and medical records in advance and complete a basic fertility evaluation according to your situation. Women can pay attention to AMH, basal hormones, ultrasound, and antral follicle count; men should also complete semen-related tests as recommended by a doctor. If there is a history of miscarriage, missed miscarriage, ovarian surgery, or repeated implantation failure, this should also be fully disclosed to the doctor.

The more complete the materials prepared, the easier it is for overseas doctors to understand previous situations and communicate about the plan before traveling to Thailand. After arriving in Thailand, the treatment plan can be further determined based on the doctor’s in-person examination results.

For families seeking medical care abroad for the first time, in addition to the medical aspects themselves, hospital appointments, document organization, doctor communication, Chinese translation, transportation arrangements, and overseas medical accompaniment also need to be planned in advance.

11 | Choosing Third-Generation IVF in Thailand: Don’t Only Ask “Is My AMH Enough?”

If you have already entered the assisted reproduction stage, rather than asking only “Is my AMH enough for IVF?”, it is better to understand several more practical questions: What is my ovarian reserve like? How many eggs am I expected to retrieve? How is embryo culture progressing? Is there a medical need for embryo genetic testing? Do my age, physical condition, and reproductive goals match? Which treatment plan is more suitable for my actual situation? These questions are often more meaningful than simply pursuing a “high AMH.”

For families planning to choose third-generation IVF in Thailand, they should also understand in advance the hospital, doctors, laboratory conditions, treatment process, and their own eligibility, rather than only comparing a single “success rate number” advertised by a particular institution.

12 | Seeking Medical Care Abroad Is Not Only About Medicine Itself

For families going to Thailand for assisted reproductive treatment for the first time, in addition to medical plans, they will encounter many practical issues: how to make hospital appointments, how to prepare documents, how to communicate with doctors, what to do if there is a language barrier, how to arrange transportation and accommodation during tests and treatment, and how each medical step connects to the next.

These things may not seem complicated, but once you are actually at an overseas medical facility, without advance planning, the process can easily become hectic.

Therefore, the real value of overseas fertility services is not just “helping to book a hospital,” but being able to coordinate hospital appointments, early communication, translation and accompaniment, pickup and transfer assistance, and medical process coordination around the patient’s actual itinerary, so clients face fewer information gaps and communication barriers in an unfamiliar medical environment.

Final Thoughts | AMH Is Not the Answer, but a “Key” to Understanding Your Own Fertility