DNA Stoffwechseltest: which blood markers matter?

A DNA metabolism test (e.g., MyBody-X) analyzes genetic variants related to energy metabolism, nutrient utilization, or insulin sensitivity. The question 'which blood markers matter' is valid because genetics alone does not provide direct measurements. Clinically established blood markers such as fasting glucose, HbA1c, triglycerides, HDL/LDL cholesterol, homocysteine, vitamin D, ferritin, and hs-CRP reflect current metabolic status. Some genetic tests claim to predict predispositions for certain marker levels (e.g., FTO for BMI, MTHFR for homocysteine). However, effect sizes are typically very small, and evidence for personalized nutrition based on these SNPs is weak. Most claims stem from association studies without randomized controlled trials. The test itself often states it is 'inspiration, not medical advice.' Therefore: blood markers are objective and clinically relevant; DNA results are supplementary but not actionable without physician interpretation. Beware of overinterpretation.