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What causes perimenopause?

Dr. Jeanne Morrison, PhD
Family Practitioner

Perimenopause is caused by the natural aging process. As a woman gets older, her body gradually produces less of the hormones estrogen and progesterone, although it can fluctuate quite a lot. In turn, this causes changes in the body that lead to the complete end of menstruation, or menopause. The follicles that release eggs are diminished, and respond less reliably to FSH (follicle-stimulating hormone). This process usually begins when a woman reaches her early 40s and ends in her early 50s. The average woman in the United States reaches menopause at around age 51.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.