wie viel eiweiß brauche ich — can a DNA test help?

The question 'how much protein do I need' cannot be answered by a DNA test. Official recommendations (e.g., 0.8 g/kg body weight for adults) are based on body weight, activity level, and health status – not on genetic variants. While some studies link genes like FTO or PPARGC1A to protein metabolism, the effects are small and insufficient for personalized dosing. A consumer DNA test lacks the evidence to determine your individual protein requirement. Instead, follow established guidelines (DGE, EFSA) and adjust based on goals (e.g., muscle gain) via nitrogen balance or activity tracking. Evidence is mixed: mechanistic associations exist, but no validated clinical algorithms. Beware of marketing claims that overstate the utility of DNA tests for protein needs.