What is perimenopause?

Perimenopause is the time leading up to menopause when you start to notice menopause-related changes--plus the year after menopause. Perimenopause is what some people call "being in menopause" or "going through menopause."  But menopause itself is only one day--the day you haven’t had a period for 12 months in a row. During perimenopause, your ovaries start to slow down, make less of certain hormones (estrogen and progesterone), and you begin to lose the ability to become pregnant. This change is a natural part of aging that signals the ending of your reproductive years.

Information provided by:  The National Women's Health Information Center which is Sponsored by the Office on Women's Health in the U.S. Department of Health and Human Services