Evidence check: MC4R in the context of menopause

MC4R (melanocortin-4 receptor) is a key regulator of energy balance and appetite. Variants in MC4R are associated with a modestly increased risk of obesity, but the effect is polygenic and not deterministic. During menopause, hormonal shifts (especially estrogen decline) reduce basal metabolic rate and promote weight gain. An MC4R variant may slightly amplify this tendency, but it is only one of many factors. Evidence is human-moderate (GWAS/observational). No single gene controls menopausal weight changes. Lifestyle interventions (diet, exercise, sleep) are far more impactful. A consumer DNA test can indicate a predisposition but cannot predict or diagnose. Always discuss results with a healthcare professional for personalized advice.