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Perimenopause vs. Menopause: What's the Difference?

These terms are often confused, but they describe different phases of the same transition.

Perimenopause

  • The transitional period before menopause
  • Can last 4–10 years
  • Hormones fluctuate unpredictably
  • Periods may be irregular but haven't stopped completely
  • This is when most symptoms occur

Menopause

  • Officially defined as 12 consecutive months without a period
  • Average age is 51, but ranges from 45–55
  • Technically just one day — the anniversary of your last period

Postmenopause

  • Everything after that 12-month mark
  • Hormone levels stabilize (at lower levels)
  • Many symptoms improve over time

Where Are You?

If you're experiencing symptoms and still having periods (even irregular ones), you're likely in perimenopause. This is a great time to support your body and build healthy habits.

Educational content, not medical advice.

JS

Jenna Sorrells, Ed.D., MPH

Founder of Her Rhythms. Public health expert and women's wellness advocate helping women navigate perimenopause with science-backed, phase-specific support.

Ready to get in sync?

Put the Science to Work

The Peri Pak is four phase-specific formulas designed around your hormonal cycle — not a generic daily pill.

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