What causes midsection weight gain?
Central weight gain reflects insulin resistance, declining sex hormones, elevated cortisol, sleep disruption, and reduced muscle mass. It tracks more closely with metabolic risk than total body weight.
Full answer
Central (visceral) weight gain is the metabolic-risk pattern: fat accumulation in the abdomen and around organs rather than the hips and thighs. Drivers include insulin resistance, declining estradiol in women and testosterone in men, elevated cortisol (real or relative), poor sleep architecture, and age-related sarcopenia (less muscle = lower resting metabolic rate). Workup includes fasting insulin, HOMA-IR, A1C, lipid panel with ApoB, ALT, hs-CRP, testosterone (men), estradiol/progesterone (women), TSH, and cortisol when clinically indicated. Treatment is sequenced: insulin sensitivity first, then muscle preservation, then sex-hormone optimization when biomarkers support it.
Educational. Not a substitute for individualized provider review.
- Weight & metabolism — Primary source · oMeds
- Reviewed by Dr. Laura Purdy, MD, MBA · Clinical Director, oMeds · Last reviewed 2026-05-29