What do studies say about MTHFR Alltag?

Scientific evidence on MTHFR variants (mainly C677T and A1298C) in everyday life is nuanced. These variants affect the activity of methylenetetrahydrofolate reductase, a key enzyme in folate and homocysteine metabolism. Studies show that carriers of risk variants may have elevated homocysteine levels, which is associated with a modestly increased risk of cardiovascular disease. However, the effect is moderate and can be modulated by diet (folate, vitamins B12, B6). For daily life, ensuring adequate B-vitamin intake is prudent, but genetic testing rarely changes general dietary recommendations. Many direct-to-consumer tests overstate clinical relevance. The German Nutrition Society does not recommend routine MTHFR genetic testing. Evidence: human-moderate for homocysteine, but for everyday decisions it is often marketing-driven. Caveat: No specific supplement dosages can be derived from genotype alone.