How are MTHFR and Abnehmen related?

The relationship between MTHFR variants and weight loss is scientifically weak. MTHFR encodes an enzyme in folate metabolism affecting methylation. Some popular claims suggest that reduced MTHFR activity impairs metabolism or detoxification, making weight loss harder. However, evidence is mostly mechanistic or speculative. GWAS studies do not show a robust link between common MTHFR SNPs (e.g., rs1801133) and body weight or fat mass. Clinical trials with folate or methyl supplementation in MTHFR variant carriers have not demonstrated consistent effects on weight loss. Any effect, if present, is very small and overshadowed by diet, exercise, and energy balance. Direct-to-consumer DNA tests for MTHFR to guide weight loss are not evidence-based and are not recommended by professional guidelines. Focus on proven lifestyle interventions instead. Caveat: The association is marketing-driven; individual MTHFR variants do not warrant a special diet.