When Does Perimenopause Start?

Middle-aged woman discussing perimenopause with a doctor, alongside icons for irregular periods, hot flashes, sleep changes, mood shifts, and an age timeline, with text reading “When Does Perimenopause Start?”

Perimenopause usually starts sometime in your 40s, though it can begin as early as your mid-30s or as late as your early 50s. Genetics, smoking, and certain medical histories can shift that window earlier or later. The clearest early signs are changes in your period, along with hot flashes, sleep trouble, and mood shifts. Tracking […]