Hormones

FSH

Follicle-Stimulating Hormone (FSH) is a key hormone that regulates ovarian function, stimulating follicle growth and estrogen production.

What it is

Follicle-Stimulating Hormone (FSH) is a key hormone that regulates ovarian function, stimulating follicle growth and estrogen production. High FSH may indicate declining ovarian reserve, perimenopause, or polycystic ovary syndrome (PCOS). Low FSH can be linked to hypothalamic dysfunction or pituitary disorders. Monitoring FSH levels helps assess reproductive health, fertility potential, and hormonal balance, guiding interventions for optimal menstrual regulation and ovarian function.

What affects your levels

High FSH is often caused by aging, primary ovarian insufficiency, or menopause. Certain genetic conditions, stress, and smoking can accelerate ovarian decline. Low FSH may result from hypothalamic amenorrhea, excessive exercise, eating disorders, or pituitary dysfunction. Chronic inflammation and insulin resistance can also disrupt FSH production. Identifying these factors early helps maintain reproductive health and prevent hormonal imbalances.

Signs and symptoms

High FSH may cause irregular cycles, hot flashes, night sweats, and fertility issues. Low FSH can result in missed periods, low libido, and difficulty conceiving. Chronic imbalances impact ovarian function, menstrual health, and metabolic stability. Regular hormone monitoring, lifestyle adjustments, and a nutrient-rich diet help maintain balanced FSH levels, improving reproductive outcomes and overall well-being.

Foods that help

For low FSH, nutrient-dense foods like fatty fish, eggs, and whole grains support hormone production. Zinc from shellfish, vitamin D from sunlight exposure, and iodine from seaweed promote ovarian function. For high FSH, antioxidants from berries, green tea, and cruciferous vegetables support egg quality. A hormone-friendly diet rich in whole, unprocessed foods helps regulate FSH levels, improving menstrual health and fertility potential.

Foods to limit

Excess processed foods, trans fats, and refined sugars can worsen hormonal imbalances, affecting FSH regulation. High alcohol intake and endocrine disruptors from plastic packaging may interfere with ovarian function. Reducing inflammatory foods while prioritizing antioxidant-rich, hormone-supportive choices helps optimize FSH levels, supporting reproductive longevity and overall hormone balance.

Educational information only — not a diagnosis. Every Pheno result is interpreted in context and reviewed by a physician.

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