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What Is Perimenopause
Medically reviewed by Kindr Health Clinical Team · Last reviewed July 3, 2026
Perimenopause is the multi-year hormonal transition that precedes menopause. It typically begins in the late 30s or 40s and lasts 4-10 years. The defining feature is hormonal volatility — not steady decline — which is why symptoms come and go and labs often look normal. This page is a quick overview; for the full guide see /perimenopause.
Perimenopause = "around menopause." It is the transitional phase during which the ovaries gradually reduce hormone production, ending at the final menstrual period.
4-10 years on average. Range: 1-14 years.
Average onset age 47. Can begin as early as 35. Family history is the best predictor.
Perimenopause = years of fluctuating hormones. Menopause = the 12-month period-free marker. Treatment differs accordingly.
For the full perimenopause guide — symptoms, stages, diagnosis, treatment — see /perimenopause.
Average age 47; range 35-55.
Perimenopause is the multi-year transition; menopause is the moment 12 months after your last period.
Yes — clinically, by symptoms, age, and menstrual pattern.
See our complete /perimenopause hub guide.
Medically reviewed by Kindr Health Clinical Team
Kindr Health Inc. — Editorial & Clinical Team (physician-supervised)
NPI 1609792902 · Last reviewed: July 3, 2026
Perimenopause starts as early as 35 and lasts 4-10 years. Symptoms, stages, and treatment …
Perimenopause Symptoms →Full list of perimenopause symptoms — irregular periods, anxiety, brain fog, palpitations.…
What Is Menopause →Menopause is 12 months without a period — but the transition is far bigger. Complete guide…
Information on this page is for educational purposes only and is not a substitute for individualized medical advice. Prescription medications require clinical evaluation and provider approval. Individual results vary. This is not an emergency service — if you are experiencing a medical emergency, call 911.