Perimenopause, Explained

Perimenopause, explained: what's happening, how long it lasts, and what helps

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Perimenopause is the transition to menopause, and it can start years before your last period. Estrogen doesn't slide gently down in perimenopause: it swings. That's behind hot flashes, joint pain, palpitations, low mood, memory slips and more. In the SWAN study, frequent hot flashes lasted a median of 7.4 years. Here's what perimenopause is, how long it lasts, how it's diagnosed, and what the…