You finally got to sleep. And then you're awake — heart going, sheets damp, throwing the covers off, flipping the pillow to the cool side. If your hot flashes seem to save their worst for nighttime, you are not imagining it. There's a real, physical reason the nights hit harder than the days — and once you understand it, the 3 a.m. drench stops feeling like a personal failing.

This article explains why sleep problems increase during perimenopause: understanding hormones, the brain, and nighttime disruption and the underlying health changes that can occur during perimenopause and menopause. Learn the possible causes, what the symptoms may mean, and when medical evaluation may be appropriate.

This article explains why fatigue happens during menopause: hormones, cellular energy, and brain function and the underlying health changes that can occur during perimenopause and menopause. Learn the possible causes, what the symptoms may mean, and when medical evaluation may be appropriate.

This article explains why sleep changes during menopause: understanding hormones, brain regulation, and circadian rhythm and the underlying health changes that can occur during perimenopause and menopause. Learn the possible causes, what the symptoms may mean, and when medical evaluation may be appropriate.