What should I know about nahrstoffmangel?

Nutrient deficiency (Nahrstoffmangel) is common and often results from poor diet, increased needs (e.g., pregnancy, athletes), or malabsorption. Key deficiencies include vitamin D, iron, B12, folate, and iodine. DNA tests like MyBody-X can identify genetic variants that affect nutrient metabolism (e.g., MTHFR for folate), but evidence for personalized supplementation is limited. ACMG/CDC do not recommend routine MTHFR screening; even TT homozygotes process folic acid normally. Deficiency should be diagnosed via blood biomarkers (e.g., ferritin, B12 levels) and clinical evaluation, not genetics alone. Lifestyle and diet dominate health outcomes. Beware of marketing that overstates genetic risk. If you suspect a deficiency, focus on a balanced diet, consider supplements only after medical advice, and get regular checkups. MyBody-X tests can provide insights but are not a substitute for clinical diagnosis.