Uterine fibroids are growths on the uterine wall muscles. Fibroids can grow to be quite large – sometimes as large as a grapefruit or even larger. While researchers aren’t sure what causes fibroids, hormonal changes most likely play a significant role.
Fibroid growth typically occurs during the childbearing years when hormonal fluctuations are more common, fibroids usually shrink once a woman enters menopause and levels of estrogen hormone decline.
Sometimes, fibroids may grow during pregnancy, interfering with a woman’s ability to carry a pregnancy to term, and when fibroids are present during pregnancy, they will need to be monitored to ensure they don’t interfere with the baby’s growth or health.