Menopause is diagnosed after 12 consecutive months without a period. The years leading up to it — perimenopause — can start in the late 30s or early 40s and last several years. Menopause before 40 is called primary ovarian insufficiency and is a distinct diagnosis with its own long-term bone and heart considerations. Use the age that matches your situation as a starting point, not a verdict: symptoms and timing vary widely, and a single blood test does not stage the transition.
Menopause at 35
Premature ovarian insufficiency (POI)
Common at this age: irregular or absent periods, hot flashes and night sweats, vaginal dryness.
Menopause at 40
Early menopause / late POI
Common at this age: irregular periods, often skipping months, hot flashes and night sweats, sleep disruption.
Menopause at 42
Early menopause
Common at this age: cycle length changes, hot flashes, night sweats.
Menopause at 45
Late perimenopause / early-normal onset
Common at this age: skipped periods and cycles ≥60 days apart, frequent hot flashes, night sweats.
Menopause at 47
Late perimenopause
Common at this age: long gaps between periods, peak vasomotor symptoms, night sweats disrupting sleep.
Menopause at 48
Late perimenopause / early menopause
Common at this age: very irregular cycles or approaching final period, hot flashes multiple times daily, fragmented sleep.
Menopause at 50
Average onset
Common at this age: final menstrual period around this age (us median 51), peak hot flash frequency, night sweats.
Menopause at 52
Average onset / early post-menopause
Common at this age: final period recently reached, ongoing hot flashes and night sweats, sleep problems.
Menopause at 55
Late menopause
Common at this age: delayed final menstrual period, continued vasomotor symptoms in some women, vaginal atrophy.