Common mistakes around MTHFR Frauen

Common mistakes around MTHFR in women often stem from misleading interpretations of direct-to-consumer (DTC) genetic tests. Many claims suggest that certain MTHFR variants (e.g., C677T) cause folate deficiency, elevated homocysteine, or even miscarriage. However, the evidence is weak: most carriers have normal homocysteine levels and do not require special supplementation. A frequent error is switching to methylfolate without clinical indication. In reality, measuring serum homocysteine and folate is more actionable than genotype alone. During pregnancy, folic acid supplementation for neural tube defect prevention is recommended regardless of MTHFR status. The idea that MTHFR variants cause a general 'detoxification disorder' lacks scientific support. Claims linking MTHFR to thyroid issues or histamine intolerance are not well substantiated. Women should not rely solely on DTC results but seek medical advice. The overall evidence level is 'marketing' or 'unclear', as many assertions are based on overinterpreted association studies.