Hormones regulate vital processes in a woman’s body, including growth, metabolism, reproduction, mood and energy. The key to staying healthy? Keeping those hormones balanced.
Hormones are known as “chemical messengers” because they circulate through the bloodstream delivering instructions that tell our body how to function. Too much or too little of a hormone affects those instructions, preventing the body from functioning properly.
Hormonal imbalances in women can lead to menstrual irregularities, fertility problems, metabolic disease, including type 2 diabetes, and abnormal cholesterol levels, mood disorders and long-term risks such as osteoporosis and cardiovascular disease.
“To complicate matters, in women, hormones such as estrogen, progesterone, testosterone, insulin, cortisol, leptin and thyroid hormones are tightly interconnected,” said Dr. Mona Romezi. “Body weight, dietary patterns and lifestyle choices all strongly influence a woman’s hormonal balance, both directly, through metabolism and endocrine signaling, and indirectly, via inflammation, insulin resistance and stress. The good news is, they can all be modified.”
Below, Romezi, an assistant professor of obstetrics and gynecology at Baylor College of Medicine, breaks down the impact of these three factors on a women’s hormonal health.
How your body weight impacts hormones
- Body fat acts as a hormone-producing organ: Fat cells secrete hormones, including leptin and adiponectin, that can contribute to hormonal imbalances and menstrual dysfunction. Excess fat also contains an enzyme that converts androgens (male hormones) to estrogens, raising estrogen levels and the risk of estrogen-sensitive conditions, such as certain types of breast cancer and uterine cancer.
- Overweight/obesity risks: Excess body weight is associated with significant risks, including insulin resistance, higher insulin levels in the blood (hyperinsulinemia), increased ovarian androgen production, which is linked to polyendocrine metabolic ovarian syndrome (PMOS), formerly polycystic ovary syndrome (PCOS), anovulation or failure to ovulate, heavier or irregular periods, and higher inflammation.
- Underweight/low body fat risks: A body weight that is too low can suppress or reduce key reproductive hormones – gonadotropin-releasing hormone (GnRH), luteinizing hormone (LH) and follicle-stimulating hormone (FSH) – leading to amenorrhea (missed periods), low estrogen, bone loss and fertility impairment, as seen in athletes and those with eating disorders.
- Weight fluctuations: Rapid weight gain or loss can disrupt menstrual cycles and ovulation due to metabolic stress.
Your diet’s impact on hormonal function
Macronutrient balance
- Carbohydrates: A high intake of refined carbs and frequent sugar spikes promote hyperinsulinemia (high insulin levels in the blood), contributing to androgen excess in PMOS and fat storage.
- Protein:Adequate protein helps keep your blood sugar stable and promotes a feeling of fullness, supporting the hormones involved in weight management and metabolism.
- Fats: Healthy fats like omega-3s and monounsaturated fats reduce inflammation and support steroid hormone synthesis (steroidogenesis) – the conversion of cholesterol into critical hormones that regulate metabolism, reproduction and stress responses. Trans fats and excessive saturated fats may worsen insulin resistance.
Micronutrients and phytonutrients
- Vitamins and minerals (micronutrients): Vitamin D, B vitamins, magnesium, zinc, iodine, selenium are critical for thyroid function, steroidogenesis and neurotransmitter balance.
- Plant-based compounds (phytonutrients): Fiber, cruciferous vegetables (like broccoli, cauliflower and kale) and certain phytochemicals support estrogen metabolism and healthy microbiome function.
Meal timing and patterns
Irregular eating, chronic high-calorie nighttime eating, and prolonged fasting extremes all can impact cortisol, insulin and reproductive hormones. Time-restricted feeding (eating within a set block of time) or balanced meal timing (eating at set times every day) can improve insulin sensitivity for some women.
Alcohol and caffeine
Excess alcohol affects estrogen metabolism and can disrupt menstrual cycles. High caffeine intake may alter cortisol and possibly affect fertility in sensitive individuals.
Lifestyle factors that impact your hormonal health
- Physical activity: Moderate exercise improves insulin sensitivity, reduces visceral fat, lowers inflammation and supports healthy sex hormone balance. Excessive high-intensity training without adequate energy intake can suppress reproductive hormones and cause amenorrhea.
- Sleep: Poor sleep disrupts vital hormones including cortisol, growth hormones, leptin and ghrelin, contributing to weight gain, insulin resistance and menstrual irregularities.
- Stress and mental health: Chronic stress elevates cortisol and can suppress reproductive hormone signaling, disrupting cycles and ovulation. Stress also promotes emotional eating and metabolic changes.
- Environmental exposures: Endocrine-disrupting chemicals like BPA, phthalates and some pesticides can mimic or block hormones and are linked to reproductive and metabolic effects.
- Smoking: Smoking negatively affects estrogen metabolism and increases the risk of early menopause and cardiovascular disease.
What you can do
Romezi offers practical recommendations to help women improve hormonal balance, reproductive function, metabolic health and long-term well-being.
- Achieve a sustainable, healthy weight: For optimal reproductive hormones, avoid extreme body weights, low or high.
- Eat a balanced diet. Focus on whole foods, adequate protein, healthy fats (omega-3s), fiber, vegetables (including cruciferous) and a low intake of refined carbs and ultra-processed foods.
- Ensure you’re getting key nutrients. Check vitamin D and iron levels and consider supplements, as needed, under medical guidance.
- Get regular, moderate exercise. Combine aerobic and resistance training. Avoid excessive training without adequate calories.
- Prioritize sleep and stress management: Aim for 7 to 9 hours of sleep nightly. Use mindfulness, therapy or relaxation techniques to reduce chronic cortisol elevation, your body’s primary stress hormone.
- Limit or eliminate endocrine-disruptors: Examples include alcohol, smoking and exposure to endocrine-disrupting chemicals.
- Schedule a medical evaluation as needed: Menstrual irregularities, infertility, severe weight change or symptoms like excessive hair growth, severe acne or fatigue warrant evaluation for PMOS, thyroid disease, eating disorders or other hormonal conditions.
By Sharon Dearman, writer in the Department of Obstetrics and Gynecology
