Myths vs facts: MC4R and menopause

MC4R (melanocortin-4 receptor) is a key regulator of energy balance and appetite. Fact: Rare loss-of-function MC4R variants are strongly linked to early-onset obesity and hyperphagia (human studies, GWAS). Myth: MC4R directly determines weight changes during menopause. Menopause alters metabolism mainly via estrogen decline, insulin resistance, and fat redistribution. While common MC4R polymorphisms can modestly affect weight regulation, they are not a primary driver of menopausal weight gain. Evidence for a specific MC4R–menopause interaction is limited; most studies do not adequately adjust for lifestyle and hormonal status. A DNA test for MC4R may offer insights into appetite regulation but does not replace clinical evaluation of hormone and metabolic markers during menopause. Be cautious of marketing claims labeling MC4R as a 'menopause gene'.