What role does BDNF play in Darmgesundheit?

The provided contexts contain no specific information about BDNF and gut health. Generally, BDNF (Brain-Derived Neurotrophic Factor) plays a key role in the gut-brain axis. It is produced by neurons and intestinal epithelial cells, influencing gut motility, barrier function, and immune regulation. Studies suggest links between low BDNF levels and inflammatory bowel disease or irritable bowel syndrome. Evidence is mostly mechanistic and animal-based; human data are moderate. A direct causal role in human gut health is not conclusively established. MyBody-X tests for BDNF are not covered in the given contexts. Caution is warranted: blood BDNF levels or genetic variants (e.g., rs6265) should not be used alone for dietary or supplement decisions. Always consult a physician for digestive issues.