was ist ein genetischer ernährungstest — can a DNA test help?

A genetic nutrition test analyzes selected DNA variants (SNPs) linked to metabolism, nutrient processing, or food intolerances. Companies like MyBody-X claim to offer personalized dietary advice, e.g., for post-exercise recovery or weight management. However, the scientific basis is weak: most SNPs have small effect sizes (GWAS, OR < 1.05), and lifestyle factors dominate. Clinical validation for specific diet plans is largely absent. Such a test may provide rough hints but does not replace medical or nutritional diagnostics. Be cautious of exaggerated marketing – the evidence is mostly 'marketing/unclear'. For evidence-based nutrition, blood biomarkers, medical history, and food diaries remain more reliable.