What to watch with FUT2 and Abnehmen?

FUT2 (fucosyltransferase 2) determines secretor status and influences gut microbiome composition. Variants are linked to vitamin B12 absorption, which could theoretically affect energy metabolism and weight. However, evidence for a direct role in weight loss is weak and mostly mechanistic. Some observational studies suggest associations with gut bacteria diversity, but effect sizes are small. From a nutrigenetic perspective, adjusting diet solely based on FUT2 is not evidence-based. B12 deficiency should be assessed via blood biomarkers, not DNA alone. Consumer tests like MyBody-X's KombiCheck offer lifestyle hints but not clinical conclusions. Be cautious of marketing claims that overstate genetic influence on weight. A balanced diet and professional guidance remain key.