Myths vs facts: MY FOODBOOK and Blutzucker

MY FOODBOOK is a nutrigenetic test that claims to provide personalized dietary recommendations based on DNA variants, including for blood sugar. However, the scientific evidence for such tests is weak. While certain genes (e.g., TCF7L2, PPARG) are associated with type 2 diabetes risk, their effect sizes are small and predictive value for individual blood sugar responses is limited. Blood sugar is primarily influenced by diet, physical activity, weight, and overall lifestyle – not by single genes. MY FOODBOOK may serve as a motivational tool but cannot replace medical diagnostics or evidence-based diets (e.g., Mediterranean diet). Many company claims are exaggerated or not supported by independent studies. Bottom line: The idea that a DNA test can give you the perfect blood sugar diet is a myth. Facts: Blood sugar regulation is complex; genetic tests offer only weak hints.