Can BDNF help with sleep?

BDNF (Brain-Derived Neurotrophic Factor) is crucial for neuronal plasticity and survival. Some research links BDNF levels to sleep regulation—low BDNF is associated with poor sleep quality. However, evidence that directly boosting BDNF (via supplements or genetic insights) improves sleep is limited. Most findings are from animal models or small human studies; robust RCTs are lacking. MyBody-X may test BDNF-related SNPs, but effect sizes are small and not actionable. Established sleep hygiene, exercise, and stress reduction are more reliable. Caution: BDNF supplements are unregulated and may have unknown side effects. Evidence: mechanistic/unclear.