Myths vs facts: NutriCare | INFINITY DNA-Test and Blutzucker

The NutriCare and INFINITY DNA-Test claim to provide personalized nutrition advice based on genetic variants, including for blood sugar. Fact: Some SNPs (e.g., in TCF7L2, GCK, SLC30A8) are associated with increased type 2 diabetes risk, but effect sizes are small and translation into actionable dietary recommendations is poorly supported by evidence. Most commercial tests rely on small studies or mechanistic data. A DNA test cannot replace blood glucose monitoring and does not offer clinically validated guidance. Marketing often exaggerates the predictive power. For real blood sugar improvement, focus on established factors like fiber, exercise, and weight management – not a genetic test result. The evidence for such tests is best rated as 'marketing/unclear'.