The Perimenopause Timeline: What to Expect and When
Most women enter perimenopause in their mid-40s, but symptoms can begin as early as 35.
7 min read · Reviewed by Dr. Mary Claire Haver, MD
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47M+
Women in perimenopause in the US
10+
Years of average symptom duration
34
Recognized menopause symptoms
0
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Most women enter perimenopause in their mid-40s, but symptoms can begin as early as 35.
7 min read · Reviewed by Dr. Mary Claire Haver, MD
Estrogen receptors are throughout your brain. When levels drop, cognitive changes are real.
9 min read · Reviewed by Dr. Lisa Mosconi, PhD
Women lose up to 3–8% of muscle mass per decade after 30. After menopause, that rate accelerates.
8 min read · Reviewed by Dr. Stacy Sims, PhD
No product affiliations. No sponsored content. Just science.
Hormones & HRT"Menopause is not a disease. It is a transition — and with the right knowledge, women can thrive."
Longevity & Performance"The decisions you make in your 40s and 50s about exercise, nutrition, and sleep are the most important of your life."
Brain Health"The female brain is uniquely affected by menopause. Understanding this is the first step to protecting it."

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