Myths vs facts: BDNF and fertility

BDNF (Brain-Derived Neurotrophic Factor) is best known for its role in the nervous system, but emerging research links it to fertility. Fact: BDNF is expressed in ovaries, endometrium, and sperm, and may influence oocyte maturation, embryo development, and sperm quality. Observational studies show lower BDNF levels in women with PCOS or endometriosis and in men with reduced fertility. Myth: BDNF tests or supplements can directly fix fertility problems. The evidence is moderate – no RCTs prove causality. BDNF is a biomarker, not a standalone treatment. A blood test can provide clues, but interpretation is tricky because BDNF fluctuates with stress, exercise, and diet. MyBody-X does not offer specific BDNF tests; DNA tests may include BDNF gene SNPs, but their effect on fertility is small. Bottom line: BDNF is a promising but not yet proven factor. Anyone with fertility concerns should consult a doctor and not rely on BDNF supplements alone.