Evidence check: NutriCare | INFINITY DNA-Test in the context of Blutzucker

The NutriCare INFINITY DNA Test marketed for blood sugar (Blutzucker) claims to provide personalized dietary advice based on genetic variants. However, the scientific evidence is limited. While GWAS have identified variants in genes like TCF7L2 and GCKR associated with fasting glucose and type 2 diabetes risk, their effect sizes are small and not clinically actionable for most individuals. Blood sugar regulation is predominantly influenced by lifestyle factors (diet, exercise, weight, stress). The test lacks clinical validation for diagnosis or personalized nutrition guidance. It should not replace standard medical tests (e.g., HbA1c, OGTT). Evidence level: GWAS associations with weak predictive value, often overhyped in marketing. Caution: Do not adjust medications based solely on such consumer genetic results without professional oversight.