What to watch with Östradiol and Sport?

Estradiol (E2) plays a key role in female cycle regulation, bone density, and athletic performance. A DNA test may suggest variants in estrogen metabolism genes (e.g., CYP1A1, COMT) that could influence hormone clearance. However, effect sizes are small, and actual estradiol levels depend on cycle phase, diet, stress, and training. DNA results alone cannot guide supplementation or training adjustments. For sport, cycle-tracking and blood tests are more actionable. Evidence: marketing. Caveat: Do not adjust hormones based solely on genetic data; consult a sports physician.