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Uterine Fibroids Health Center

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Uterine Fibroids - Cause

The exact cause of uterine fibroids is not known. Fibroids begin when cells overgrow in the muscular wall of the uterus.

After a fibroid develops, the hormones estrogen and progesterone appear to influence its growth. A woman's body produces the highest levels of these hormones during her childbearing years. After menopause, when hormone levels decline, fibroids usually shrink or disappear.

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Uterine Fibroids

Uterine fibroids (leiomyomata) are non-cancerous growths that develop in or just outside a woman’s uterus (womb). Uterine fibroids develop from normal uterus muscle cells that start growing abnormally. As the cells grow, they form a benign tumor.

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WebMD Medical Reference from Healthwise

Last Updated: April 19, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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