Myths vs facts: B12 and Wechseljahre

Myths vs facts: B12 and menopause. A common myth is that B12 deficiency only affects vegans. In reality, absorption declines with age, and many menopausal women have reduced stomach acid (atrophic gastritis), impairing B12 uptake. Another myth: B12 supplements relieve menopause symptoms like hot flashes or mood swings. Evidence is weak – B12 is crucial for nerve function and red blood cells, but a direct effect on menopausal symptoms is unproven unless a deficiency exists. Fact: B12 deficiency can cause fatigue, brain fog, and low mood, which may be mistaken for menopause symptoms. Testing (holotranscobalamin, MMA) is advisable before supplementing. Consumer DNA tests for B12-related genes (e.g., MTHFR, FUT2) have limited predictive value. High-dose B12 is generally safe but unnecessary if levels are normal. Evidence: human-moderate – studies exist on B12 and aging, but few specifically on menopause. Beware of marketing that promotes B12 as a menopause miracle.