In Detail
The average age of menopause in the United States is approximately 51. The normal range is broad — roughly 45 to 55. Menopause before age 45 is considered early menopause, and before age 40 is called premature ovarian insufficiency, which warrants a fuller workup.
Perimenopause typically begins four to eight years before the final menstrual period, which means symptoms often appear in the early-to-mid forties — and sometimes in the late thirties. Smoking, certain autoimmune conditions, prior chemotherapy, and a family history of early menopause can all shift the timeline earlier.
Age alone does not determine treatment. Two women of the same age can have very different symptom severity, lab profiles, and risk factors. Care is individualized accordingly.