Question: What Causes Uterine Fibroid Tumors?
The factors that initiate fibroid growth are not known. The vast majority of fibroids occur in women of reproductive age, and according to some estimates, they are diagnosed in black women two to three times more frequently than in white women. They are seldom seen in young women who have not begun menarche (menstruation) and they usually stabilize or regress in women who have passed menopause.
What You Need to Know About Fibroid Tumors