What to watch with BDNF and Fruchtbarkeit?

BDNF (Brain-Derived Neurotrophic Factor) is primarily known for its role in the nervous system, but some research suggests it may also influence fertility—for example, by affecting oocyte maturation, sperm quality, or embryo implantation. However, the evidence is still limited and not conclusive. Direct-to-consumer DNA tests that analyze BDNF variants are not clinically validated for fertility assessment. Similarly, blood tests for BDNF levels are not established as fertility markers. If you are concerned about fertility, it is better to focus on well-established parameters such as hormone levels (FSH, LH, AMH, progesterone, testosterone), semen analysis, or ultrasound. A BDNF test alone does not provide reliable information about fertility. For those trying to conceive, a medical evaluation with specific fertility tests is recommended. The evidence for BDNF as a fertility marker is currently unclear.