Can BDNF help with Darmgesundheit?

The question of whether BDNF (Brain-Derived Neurotrophic Factor) can improve gut health is not well supported by current evidence. BDNF is primarily known as a nerve growth factor in the brain, playing a key role in neuroplasticity. Some preclinical research suggests that BDNF is also expressed in the gut and may influence the intestinal barrier and gut motility via the enteric nervous system. However, these findings come mostly from animal models and cell studies. In humans, there are no robust clinical trials showing that oral BDNF supplementation directly benefits gut health. Moreover, BDNF is a protein that is poorly bioavailable when taken orally, as it is broken down in the gastrointestinal tract. The evidence level is therefore 'mechanistic' or 'unclear'. Consumers should be cautious: improving gut health is more reliably achieved through diet, fiber, probiotics, and stress management rather than BDNF supplements. Always consult a healthcare professional before trying novel supplements.