Can MTHFR help with Fruchtbarkeit?

Whether MTHFR can help with fertility is a nuanced question. MTHFR (methylenetetrahydrofolate reductase) is a key enzyme in folate and homocysteine metabolism. Certain variants (especially C677T and A1298C) can reduce enzyme activity, potentially raising homocysteine levels, which have been linked to recurrent pregnancy loss, preeclampsia, and male infertility. However, the evidence is mixed: while some studies report associations, large meta-analyses have not confirmed a clear causal role. Commercial DNA tests often market MTHFR as a 'fertility gene,' overstating its clinical impact. Professional guidelines do not recommend routine MTHFR screening for fertility. A more evidence-based approach is to measure blood homocysteine. If elevated, supplementation with folic acid (or methylfolate) plus vitamins B12 and B6 may be considered under medical supervision. Self-supplementing with high-dose methylfolate without testing is not advised, as it can mask vitamin B12 deficiency. In summary, MTHFR may contribute to fertility issues in some individuals, but it is rarely the sole cause. Lifestyle factors (diet, stress, sleep) and other medical conditions usually play a larger role. The evidence level is mixed, and consumers should be cautious of overhyped claims.