How Women Can Improve Fertility and Hormone Health

Fertility Is Not Just About Having a Baby

Most women only think seriously about their fertility when they're actively trying to conceive. That's understandable—but it's also a missed opportunity. Fertility, as reproductive endocrinologist Dr. Natalie Crawford explains, is one of the most revealing health metrics a woman has access to, regardless of whether she ever wants children.

When your reproductive system is functioning well, it signals that your hormones, metabolism, and cellular health are all pulling in the same direction. When it isn't, that dysfunction is rarely an isolated problem. Research consistently shows that women who experience infertility face elevated rates of metabolic syndrome, cardiovascular disease, and even premature mortality. Not because infertility directly causes those outcomes, but because it is often one of the first visible signals that something deeper—chronic inflammation, insulin resistance, hormonal imbalance—has been quietly taking hold.

Understanding this reframes fertility entirely. It stops being a niche concern for women in their thirties who are ready to start a family, and becomes something every woman should pay attention to across her entire adult life.

The AMH Test: A Simple Window Into Your Reproductive Future

One of the most actionable pieces of advice Dr. Crawford offers is also one of the least widely known: get an AMH test. Anti-Müllerian hormone is produced by the follicles in your ovaries and serves as a reliable indicator of your ovarian reserve—essentially, how many eggs you have left.

This is not the same as egg quality. Quality is determined by genetics and cellular competence, which are harder to measure directly. But quantity matters too, and knowing where you stand can meaningfully shape how you plan your reproductive future. A low AMH in your late twenties, for example, might prompt you to explore egg freezing sooner rather than later. A healthy AMH in your late thirties might ease anxiety about timing.

The test is simple, widely available, and affordable—yet most women have never heard of it, let alone asked their doctor for it. If you're listening to conversations about women's fertility health and want one concrete step to take this week, requesting an AMH test is it.

Your Menstrual Cycle Is Telling You Something

The menstrual cycle is one of the most underutilised diagnostic tools in women's health. Painful periods, irregular cycles, mid-cycle spotting, or significant bloating aren't just inconveniences to push through—they're data. They're your body communicating that something in the hormonal ecosystem deserves attention.

Dr. Crawford dedicates significant space in her book, The Fertility Formula, to helping women learn to track their cycles and identify ovulation. This isn't purely about family planning. Knowing when you ovulate, understanding the distinct hormonal signatures of your follicular and luteal phases, and recognising deviations from your personal baseline gives you the knowledge to advocate for yourself in medical settings.

For too long, women have been dismissed when raising concerns about their cycles. Symptoms that are real and clinically meaningful get attributed to stress, labelled as normal, or simply ignored. Learning your own pattern makes it much harder for those concerns to be brushed aside—and it builds the self-knowledge you'll need as you move into perimenopause and beyond.

Perimenopause Is Not a Waiting Room

Menopause, by strict clinical definition, is twelve consecutive months without a period. It is, technically, a single day—the day after that twelfth month ends. Everything leading up to it is perimenopause, a transitional period that can span five to ten years and involve significant hormonal turbulence even while periods continue.

Here is where the current medical framework fails many women: the dominant approach has historically been to wait until full menopause is confirmed before offering hormone therapy. That means years of disrupted sleep, cognitive fog, mood changes, and physical symptoms while women wait for a bureaucratic threshold to be met.

The evidence for starting hormone support earlier—during perimenopause, not after it—is growing. Estrogen has well-documented cardioprotective effects. It plays a role in reducing Alzheimer's disease risk. It protects bone density. The idea that women should be depleted of it for over a year before becoming eligible for treatment is increasingly difficult to justify clinically.

Dr. Crawford is direct about this: women deserve access to hormonal support when they need it, not when an arbitrary definition says they've suffered long enough.

Rethinking Hormone Therapy: Replacement vs. Augmentation

There's a useful distinction worth making here—one that the broader conversation around hormone therapy often collapses. There is a meaningful difference between replacing hormones that have dropped below normal range, and augmenting hormones that sit at the low end of normal to reduce symptoms and optimise function.

In men's health, this distinction has become more accepted. The idea of pushing testosterone from the low end of the normal range to the middle or high end—if it relieves symptoms and improves quality of life—is no longer controversial in many clinical circles. Women deserve the same framework applied to estrogen and progesterone.

Calling it hormone replacement therapy carries certain associations, some helpful and some not. The historical baggage around the Women's Health Initiative (WHI) study, which caused widespread fear about hormone therapy in the early 2000s, is still shaping clinical practice in ways that are no longer warranted. The nuances of that research—the age of participants, the specific formulations used, the dosing—were largely lost in the public panic that followed. A generation of women paid for that with years of unnecessarily poor quality of life.

The tide is shifting. The conversation now is less about whether hormone therapy is dangerous and more about matching the right type, dose, and timing to the individual woman's needs and biology.

Lifestyle, Nutrition, and the Foundations That Actually Move the Needle

Beyond hormone therapy and diagnostic testing, there are meaningful lifestyle levers that influence both fertility and hormonal health. These aren't revolutionary, but they're often underweighted relative to the pharmaceutical conversation.

Metabolic health is the foundation. Insulin resistance is one of the most common underlying drivers of hormonal dysfunction in women—implicated in polycystic ovary syndrome (PCOS), irregular cycles, and poor egg quality. Stabilising blood sugar through diet, reducing ultra-processed food, and increasing fibre intake are unglamorous but high-impact steps.

Chronically elevated cortisol suppresses reproductive hormones. The hypothalamic-pituitary-ovarian axis is highly sensitive to stress signals—sustained psychological or physiological stress can disrupt ovulation, shorten luteal phases, and impair implantation. Sleep deprivation compounds this further, acting as a chronic stressor with measurable hormonal consequences.

Nutritional adequacy matters more than most women realise. Folate, vitamin D, omega-3 fatty acids, and adequate dietary fat all support ovarian function and hormonal synthesis. Extreme caloric restriction or very low body fat, whether from intense athletic training or disordered eating, is one of the most reliable ways to disrupt the menstrual cycle—a signal the body sends when it doesn't believe conditions are safe for reproduction.

These aren't novel insights, but they are frequently deprioritised in clinical conversations that default quickly to medication.

Taking Ownership of Your Hormonal Health

What runs through Dr. Crawford's work—and through conversations like this one—is a consistent theme: women have been systemically under-informed about their own bodies. Dismissed in clinical settings. Kept at arm's length from decisions about their own hormonal health. Given less access to the tools that could help them feel better and live longer.

Knowing your cycle is not just a fertility strategy. Getting an AMH test is not just a pre-pregnancy checklist item. Understanding the difference between perimenopause and menopause is not just useful for women in their fifties. These are health literacy tools that pay dividends across decades.

Fertility health and general health are not parallel tracks—they are the same track. The sooner women have the language, the data, and the clinical support to engage with both, the better positioned they are to make decisions that reflect their actual biology rather than outdated guidelines.

If you want a single starting point, learn your cycle. Track your ovulation. Ask for the AMH test. And if your doctor dismisses your concerns, find a doctor who won't.

Frequently Asked Questions

What is AMH and why should women get it tested?

AMH stands for Anti-Müllerian hormone. It's produced by follicles in the ovaries and gives a reliable indication of your ovarian reserve—how many eggs you have remaining. It's not a measure of egg quality, but it is a meaningful marker of reproductive potential. Women who want children in the future, or who simply want to understand their hormonal health, should ask their doctor for this test. It's widely available and relatively inexpensive.

Can you still get pregnant during perimenopause?

Yes. As long as you are still having menstrual periods, ovulation is occurring and pregnancy is possible. Perimenopause can last five to ten years and involves hormonal fluctuation rather than complete ovarian failure. Menopause—the formal end of fertility—is defined as twelve consecutive months without a period. Until that threshold is reached, conception remains biologically possible.

Is hormone therapy safe for women who haven't yet reached menopause?

The evidence increasingly supports the benefits of hormone therapy beginning during perimenopause, rather than waiting for full menopause. Estrogen has cardioprotective, neuroprotective, and bone-protective effects. The old fear surrounding hormone therapy was largely driven by misinterpretations of the Women's Health Initiative study. Current clinical thinking emphasises matching therapy to the individual—type, dose, and timing—rather than applying blanket restrictions based on a strict menopausal definition.

How does lifestyle affect female fertility and hormone health?

Significantly. Insulin resistance, chronic stress, poor sleep, nutritional deficiencies, and extreme caloric restriction all disrupt the hormonal axis that governs ovulation and reproductive function. Stabilising blood sugar, managing stress, prioritising sleep, and ensuring adequate intake of key nutrients like folate, vitamin D, and omega-3s are all evidence-supported steps. These factors influence not just the ability to conceive but the overall hormonal environment that shapes how a woman feels day to day and long term.

What are the red flag signs that something is wrong with your hormonal health?

Irregular or absent periods, very painful menstruation, significant mid-cycle spotting, severe PMS, and unexplained bloating or mood changes linked to your cycle are all worth raising with a clinician. These symptoms are frequently dismissed as normal variation, but they can indicate conditions like PCOS, endometriosis, or thyroid dysfunction. Tracking your cycle gives you the data to make a stronger case when seeking medical support.