What should I know about was ist nutrigenetik und wie bestimmt sie unser leben?

Nutrigenetics studies how genetic variants (SNPs) affect nutrient metabolism. It can suggest personalized dietary adjustments, e.g., for folate metabolism via MTHFR variants. However, effect sizes are small, and evidence is mostly from GWAS, not clinical trials. It cannot determine your life or health outcomes; lifestyle, microbiome, and environment are far more influential. Consumer DNA tests like MyBody-X offer insights but are not diagnostic. The question 'how does it determine our lives' overstates the role of genetics. Nutrigenetics provides probabilities, not certainties. Evidence: gwas/human-moderate. Caveat: single SNPs have tiny effects; marketing often inflates their importance.