welche diät passt zu mir — can a DNA test help?

A DNA test can offer clues but cannot prescribe a specific diet. For example, the rs7903146 variant in TCF7L2 is associated with carbohydrate metabolism (GWAS, OR 1.54), but the effect is modest. Diet response is polygenic and heavily influenced by lifestyle, gut microbiome, and environment. Consumer tests like MyBody-X cover few markers and lack clinical validation. Personalized nutrition should integrate comprehensive data (blood biomarkers, tolerances, preferences) rather than rely solely on genetics. Evidence: GWAS, but insufficient for individual diet prescription. Beware of marketing overclaims.