80% of Women Are Deficient in This One Mineral. It Controls Hormones, Mood, and Even How You Process Estrogen

Women’s health has long been shrouded in uncertainty, with crucial hormonal shifts dismissed as mere “nuisance symptoms.” But emerging research reveals something far more significant: the hormonal changes women experience aren’t just about reproduction—they’re powerful biomarkers predicting future disease risk, cognitive decline, and overall longevity.

In a recent episode of the Huberman Lab podcast, Dr. Andrew Huberman sat down with hormone expert Dr. Sarah Gottfried to discuss the most critical—yet often overlooked—aspects of female health across every decade of life.

What emerged was a roadmap that challenges conventional medical wisdom and offers women actionable strategies to optimize their health from puberty through menopause and beyond.

The insights shared could fundamentally change how women approach their healthcare—and potentially prevent devastating conditions like Alzheimer’s disease and heart disease decades before symptoms appear.

Why Your Grandmother’s Hormone History Matters

Dr. Gottfried emphasized that understanding family hormone history isn’t just interesting—it’s essential for predicting your own hormonal trajectory.

My work is really at the interface between genetics and environment. And I think it’s essential that you understand what your grandmother went through and especially your mother.

She explained that certain female conditions have strong genetic components, including endometriosis, fibroids, and polycystic ovarian syndrome (PCOS). But beyond these specific conditions, intergenerational trauma significantly affects the endocrine system, particularly cortisol signaling.

This genetic-environment interface means women can take proactive steps if they know what runs in their family—rather than waiting for symptoms to appear.

The Biomarker Roadmap: What to Test and When

Teenage Years: Laying the Foundation

For young women who’ve already hit puberty, Dr. Gottfried recommended focusing primarily on cortisol levels rather than sex hormones, since hormonal variability is common due to system immaturity.

The most critical intervention for teenagers? Vegetable consumption and micronutrient testing.

Intake of vegetables, polyphenols, is such an important predictor of future risk of breast cancer, like when you’re 50, 60 plus. And the most important time is when you’re a teenager.

Dr. Gottfried suggested that showing a 17-year-old evidence of micronutrient gaps could motivate dietary changes during this critical window—potentially altering disease risk 25 years down the line.

Your 20s and 30s: Establishing Your Baseline

This decade represents the optimal time for comprehensive hormone benchmarking. Dr. Gottfried recommended testing:

• Estrogen, progesterone, and testosterone levels
• DHEA and the complete androgen pathway
• Estrogen metabolites (some protective, others harmful)
• Microbiome health through stool testing
• Comprehensive micronutrient panels

For timing, she recommended day 21-22 of the menstrual cycle for women with regular 28-day cycles. For those with irregular cycles or women getting older with shorter cycles, testing on day 19-20 is preferable.

While blood testing is most accessible and insurance-covered, Dr. Gottfried expressed preference for dried urine testing to capture both hormone levels and metabolomics—providing a more comprehensive picture than a brief blood draw.

The Magnesium Deficiency Epidemic

Dr. Gottfried highlighted that approximately 70-80% of Americans are deficient in magnesium—a mineral crucial for hormone production and estrogen elimination.

For testing accuracy, she emphasized measuring red blood cell magnesium rather than standard blood tests, which don’t reflect true cellular levels.

Interestingly, for her patients who tend toward constipation—which she noted affects roughly 80% of the women she treats—magnesium supplementation serves double duty by supporting both hormonal health and digestive function.

Why Women Experience More Constipation (And Why It Matters)

Dr. Gottfried’s explanation for why constipation disproportionately affects women was multifaceted and revealing.

Patriarchy, rage, the PINE system. Psychology, immunology, neural and endocrine factors combined.

Beyond the sociological factors, she outlined clear physiological reasons:

• Women’s digestive tracts are approximately 10 feet longer than men’s
• Women are more likely to have a tortuous (twisted) colon
• Subtle thyroid dysfunction affects many women, contributing to constipation
• Imbalances between estrogen and progesterone impact digestive function
• Women experience higher rates of trauma, affecting the hypothalamic-pituitary-adrenal axis

She described constipation not just as a digestive issue but as an important signal reflecting stress, hormonal imbalance, and the physiological burden of being female.

Stress Reduction: Building Your Personal Menu

When Huberman asked about stress reduction tools, Dr. Gottfried made an important distinction: she focuses on lowering perceived stress rather than stress itself.

I think all of us need an allocart menu of what is most effective. So what works for me now at my age is different than the TM I did as a college student.

Her recommended “allocart menu” includes:

• Meditation practices (she used transcendental meditation in college)
• Yoga (she became a certified teacher in her 30s)
• Holotropic breathwork
• Sex and orgasm
• Connection—feeling heard, seen, and loved

The key insight: different life stages and individual phenotypes require different approaches. What works in your 20s may not serve you in your 40s.

The Exercise Cortisol Connection

Dr. Gottfried shared her personal story of discovering dangerously high cortisol levels at age 35, despite—or perhaps because of—her rigorous exercise routine.

I went to my physician and I said, I’m 35. I’ve never been so exhausted in my life. I just feel like I’m pushing a rock up the hill. I’ve got this belly fat that I don’t like and I don’t want to have sex with my husband. What can we do about this?

Her doctor offered birth control pills and antidepressants. Instead, she ran her own hormone panel and discovered cortisol levels three times normal, insulin in the 20s while fasting, glucose at 105, mildly abnormal thyroid, and low progesterone.

The culprit? “Chronic cardio”—running four miles three to four times weekly was raising her cortisol further. Marathon runners and heavy cardio enthusiasts tend to have significantly elevated cortisol levels.

Her solution involved switching to more adaptive exercise like Pilates and yoga, which helped lower cortisol while she addressed the root causes through stress management and targeted supplementation.

PCOS: More Than a Reproductive Issue

Polycystic ovary syndrome affects far more than fertility, yet it’s often dismissed once childbearing years end. Dr. Gottfried called this a dangerous oversight.

PCOS diagnosis typically requires meeting two of three criteria:

• Cysts on the ovaries
• Clinical manifestations of hyperandrogenism (hirsutism, acne)
• Irregular periods (cycles longer than 35 days)

The critical point: PCOS represents a massive risk factor for cardiometabolic disease that becomes even more important after age 50.

Many people tend to pigeonhole PCOS as a problem of reproductive age. We have to be thinking of it over the entire female life cycle. And I would say it’s even more important to consider it over the age of 50.

The elevated testosterone and high androgens characteristic of PCOS are among the greatest cardiometabolic disease drivers for women—a fact often overlooked when reproductive concerns are no longer relevant.

Continuous Glucose Monitors: A Behavioral Game-Changer

Dr. Gottfried expressed enormous enthusiasm for continuous glucose monitors (CGMs), calling them transformative for patient behavior.

I’ve never seen any tool that I’ve ever used in medicine change behavior the way that CGMs do.

She noted that while glucose is somewhat of a later-stage marker—insulin changes years before glucose does—CGMs democratize health data in revolutionary ways.

This democratization shifts medicine from a patriarchal model where doctors gatekeep information to one where patients understand their own biology and become their own clinicians—a transformation she described as “a loop of benevolence and integrity” essential for creating actual health rather than managing disease.

The Birth Control Pill: Informed Consent Missing

Dr. Gottfried acknowledged oral contraceptives provide essential reproductive choice and reduce ovarian cancer risk by 50% when taken for five years. However, she expressed serious concerns about widespread prescription without proper informed consent.

The pill depletes critical micronutrients including magnesium and B vitamins, affects the microbiome, and increases inflammatory markers by two to three times. It makes the hypothalamic-pituitary-adrenal axis more rigid, reducing stress adaptability.

Most significantly, it raises sex hormone binding globulin (SHBG), which soaks up free testosterone. For testosterone-sensitive women, this can cause:

• Vaginal dryness
• Declined sex drive
• Reduced confidence and agency
• Decreased risk-taking ability
• Clitoral shrinkage by up to 20%

Dr. Gottfried noted that elevated SHBG can persist a year after discontinuing the pill, raising questions about full reversibility.

Perimenopause: The Brain Changes Nobody Discusses

Perhaps most striking was Dr. Gottfried’s discussion of perimenopause—not as a nuisance phase, but as a critical period of massive brain transformation.

Research by Dr. Lisa Mosconi at Cornell reveals that starting around age 40, women experience approximately 20% decline in cerebral metabolism from pre-menopause through post-menopause.

Women experiencing the most severe perimenopausal symptoms—hot flashes, night sweats, sleep difficulties—show the most significant cerebral hypometabolism. This isn’t just discomfort; it’s a potential biomarker for Alzheimer’s risk.

Alzheimer’s disease is not a disease of old age. It is disease of middle age.

Dr. Gottfried described the experience as “slow brain energy”—walking into rooms and forgetting why, struggling to manage tasks that were once easy.

Yet conventional medicine dismisses hot flashes and night sweats as temporary nuisances, offering hormone therapy only for severe symptoms. Dr. Gottfried adamantly disagreed with this approach, noting these symptoms are biomarkers for cardiometabolic disease, increased bone loss, and brain changes.

The One Test Every Woman Should Get by 45

If women took away only one action item, Dr. Gottfried urged it should be this: get a coronary artery calcium score by age 45 (sooner if there’s family history of premature heart disease).

This CT scan of the chest can be self-ordered and provides a critical fork-in-the-road assessment of cardiometabolic health. Women with elevated scores—or those with PCOS or other risk factors—can make targeted changes decades before conventional screening would catch problems.

Dr. Gottfried’s own score: zero. But for women showing early calcium deposits, this data becomes essential for prevention.

Six Critical Don’ts for Female Vitality

When asked what women should avoid for maximum vitality and longevity, Dr. Gottfried identified six key factors:

• Poor sleep
• Alcohol consumption
• High perceived stress
• Eating wrong foods for your phenotype
• Toxic relationships and isolation
• Not moving enough or exercising inappropriately for your body

Each factor interconnects with hormonal health, creating cascading effects that compound over decades.

The overarching message from Dr. Gottfried’s work: women’s hormonal health isn’t about managing symptoms—it’s about understanding biomarkers that predict disease risk decades in advance and taking proactive, personalized action based on individual phenotype rather than population-level guidelines.