welche blutwerte bei müdigkeit testen — which blood markers matter?

The MyBody-X DNA Nutrition Test reports a few common SNPs such as FTO rs9939609 (obesity risk) and BDNF rs6265 (appetite regulation). Effect sizes are small – lifestyle factors dominate. The test cannot prescribe a diet or diagnose any condition. It provides only suggestive hints that should be interpreted within the context of a balanced diet and physical activity. Evidence is based on GWAS and observational studies; clinical validation for direct dietary recommendations is weak. Marketing may overstate benefits. If the test also includes iron or zinc markers (e.g., HFE, TMPRSS6), these are relevant for hemochromatosis risk assessment, but a blood ferritin measurement remains necessary. Overall: the test can serve as a nudge toward healthier habits, but it does not replace medical advice or blood work.