Can BDNF help with Abnehmen?

Based on the provided context, there is no information directly addressing whether BDNF (Brain-Derived Neurotrophic Factor) can aid weight loss. The context covers genes like CYP2C9, FADS1, APOA2, PPARA, TCF7L2, MTNR1B, and MC4R, but not BDNF. BDNF is primarily known for its role in neuronal survival and plasticity. Some preclinical research suggests BDNF may influence energy balance and appetite regulation via hypothalamic pathways, but human evidence is limited and inconsistent. Low BDNF levels have been observed in obesity, but causality remains unclear. The idea of using BDNF supplements for weight loss is not supported by clinical data; oral BDNF is degraded in the gut and does not cross the blood-brain barrier effectively. Lifestyle factors like exercise and a balanced diet can increase endogenous BDNF, but this is not a proven weight-loss strategy. Therefore, the evidence grade is 'unclear'. Consumers should be cautious of marketing claims linking BDNF directly to weight loss. Without robust human trials, any recommendation would be speculative.