Myths vs facts: BDNF and Fruchtbarkeit

BDNF (Brain-Derived Neurotrophic Factor) is often discussed in the context of neuroplasticity and mood, but its link to fertility is less clear. Myth: BDNF supplements or genetic tests can directly boost or predict fertility. Fact: BDNF is expressed in ovaries, testes, and embryos, and it plays a role in oocyte maturation, sperm quality, and embryonic development. Some studies show associations between low BDNF levels and fertility issues, but the evidence is mostly mechanistic and not strong enough for clinical recommendations. A MyBody-X test can detect BDNF variants (e.g., Val66Met), but their effect on fertility is modest and overshadowed by lifestyle and hormonal factors. Interpreting such results for fertility is speculative. The reality: BDNF is one piece of a complex puzzle; no single gene test can predict or improve fertility. For actionable advice, focus on hormone panels, lifestyle optimization, and medical consultation. Evidence: mechanistic with moderate associations. Caveat: no validated BDNF-based fertility tests exist.