60–70% of women gain weight during perimenopause — not from eating more, but because five hormonal systems governing metabolism, fat storage, appetite and calorie burning shift simultaneously. Estrogen redirects fat to the abdomen. Progesterone loss removes 600 calories a month you were burning without knowing it. Insulin resistance increases. Leptin stops working. And FSH — a hormone nobody talks about — independently drives fat gain before estrogen even drops. Here's what's

Up to 80% of women develop insulin resistance during perimenopause — and most have no idea it's happening. Learn the hormonal science behind why estrogen decline disrupts your metabolism, why standard blood tests miss it, and the evidence-backed steps that actually reverse it.

Your waist is expanding and nothing has changed — same meals, same walks, same everything. Sound familiar? In perimenopause, it's not willpower. It's cortisol. As estrogen declines, it loses its buffering effect on your stress hormone — and cortisol responds by storing fat directly in your midsection. Here's the full hormonal story behind cortisol belly, why standard advice often makes it worse, and what the science actually says works.