What to watch with BDNF and fertility?

BDNF (Brain-Derived Neurotrophic Factor) is best known for its role in the nervous system, but it also plays a part in reproduction. Studies have found BDNF in the ovary, endometrium, and sperm, suggesting it may influence oocyte maturation, embryo implantation, and sperm quality. Some consumer DNA tests include the BDNF Val66Met polymorphism, which affects BDNF secretion. However, the link to fertility is modest and not clinically established. Evidence comes from observational and mechanistic studies, not large clinical trials. A single gene test cannot predict or treat fertility issues. Lifestyle, hormonal health, and medical evaluation are far more important. Be cautious of marketing that overstates BDNF as a 'fertility gene'. For anyone struggling with conception, consulting a reproductive specialist is essential.