What is menopause?

Simple definition

Menopause is the point when you have gone 12 consecutive months without a menstrual period (and there is no other cause, such as pregnancy or certain medications). After that milestone, you are considered postmenopausal.

Perimenopause is the transition leading up to that final period. Hormone levels fluctuate, cycles often become irregular, and symptoms like hot flashes or sleep changes are common - sometimes for years.

Educational summary only; your clinician confirms timing based on your history and exam.

Average age and variation

In the United States, natural menopause happens around age 51 on average, but a wide range is normal. Some women reach menopause earlier; some later. Family pattern, smoking, and certain medical treatments can shift timing.

For a stage-by-stage view across decades, read our menopause stages by age guide. If you are noticing changes in your 40s, early perimenopause signs explains common patterns.

Natural vs surgical menopause

Natural menopause occurs when the ovaries gradually produce less estrogen and periods stop on their own.

Surgical menopause refers to menopause caused by surgery that removes both ovaries (oophorectomy), or sometimes follows certain cancer treatments that affect ovarian function. Symptoms can begin more abruptly; medical follow-up is especially important.

Symptom checklist

Prefer a printable-style list of common symptoms to mark over time? Use our menopause symptoms checklist alongside the trackers above.