A risk factor is something that increases your likelihood of getting a disease or condition.

It is possible to develop fibroids with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing fibroids. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.


Uterine fibroids usually develop in women approximately 13-50 years of age (childbearing age). However, they can also be found in older women (usually without symptoms).

Ethnic Background

Black women tend to have more and larger fibroids at an earlier age. Asian women have a lower incidence of symptomatic uterine fibroids.


Women who are overweight or obese for their height (based on body mass index or BMI) are also at slightly higher risk for fibroids than women who are average weight for their height.


Women who have given birth appear to be at lower risk for uterine fibroids.