Supplements for women

Women have several life-stage-specific supplement needs with strong evidence: menstrual iron loss (test ferritin first; replace if needed), PMS symptom reduction (vitamin B6 + magnesium + calcium per the 2025 Robinson review), pregnancy preparation (folate, choline, DHA, D3, iodine), and post-menopausal bone protection (vitamin D3 + calcium + K2 + magnesium). Soy isoflavones have moderate evidence for hot flashes in women of East Asian ancestry; black cohosh has weaker evidence and possible hepatic safety concerns. Myo-inositol restores ovulation in PCOS in the 40:1 myo:DCI ratio.