Risks and limits of MTHFR Ernährung

MTHFR genetic testing for nutrition is popular but has limited evidence for dietary changes. Common variants (C677T, A1298C) affect methylation, but most carriers have no health issues. Supplementing with methylfolate is only indicated in cases of elevated homocysteine or specific clinical conditions. Risks include false reassurance, unnecessary supplement costs, and overlooking real medical causes. The test is marketed as a 'lifestyle insight' and not a diagnostic tool. Evidence is based on association studies, not clinical trials. Always consult a doctor before making dietary or supplement changes based on genetic results.