MY FOODBOOK + Diätplan: can a DNA test help?

Whether a DNA test like 'MY FOODBOOK' can help create a diet plan requires a nuanced answer. There are genetic variants that influence nutrient metabolism – for example, lactose intolerance (LCT), caffeine metabolism (CYP1A2), or fat distribution (FTO). Some commercial tests therefore offer 'nutrigenetic' diet plans. However, the scientific evidence for a measurable benefit of such personalized plans is weak to mixed. Most single-gene effects are small and are overshadowed by lifestyle, microbiome, and environmental factors. Moreover, long-term randomized studies showing that DNA-based diets outperform standard recommendations are often lacking. A test can serve as a rough guide at best, but should not be the sole basis for a diet. More important are a balanced diet, exercise, and medical advice. Beware of exaggerated marketing claims: a DNA test does not replace professional nutritional counseling.