Myths vs facts: MTHFR and Wechseljahre

Myth: An MTHFR gene variant directly causes severe menopause symptoms. Fact: MTHFR (methylenetetrahydrofolate reductase) is involved in folate metabolism. Common variants like C677T can modestly reduce enzyme activity and raise homocysteine levels. During menopause, cardiovascular risk naturally increases, and elevated homocysteine may add to that risk—but the evidence linking MTHFR to hot flashes, mood swings, or sleep disturbances is weak and inconsistent. No high-quality studies confirm a direct causal role. Consumer DNA tests often overstate MTHFR's impact. Testing for MTHFR alone is not clinically useful for managing menopause. Supplementing with methylfolate should only be done if a deficiency is confirmed or under medical supervision. Menopause is primarily driven by hormonal changes; lifestyle, diet, and hormone therapy have far stronger evidence than genetic testing. Bottom line: MTHFR is a minor piece of the puzzle, not a decisive factor.