Although the direct cause of uterine fibroids is unknown, factors that might cause you to be more likely to develop fibroids are:

  • Horomonal Irregularities – Estrogen and progesterone are produced by the ovaries, causing the uterine lining to regenerate, and may be a factor in fibroid development.
  • Pregnancy – When you are pregnant, your body produces more estrogen and progesterone which could encourage fibroid growth.
  • Genetics – If women in your family have a history of uterine fibroids, you could be more likely to develop them.
  • Age – Typically, women over the age of 30 are more likely to develop fibroids.
  • African-American Descent – cites studies that indicate that African-American women have a higher cumulative risk of uterine fibroids1.
  • Weight – Being overweight puts you at a higher risk for developing uterine fibroids.

(1)Baird DD, Dunson DB, Hill MC, Cousins D, Schectman JM. High cumulative incidence of uterine leiomyoma in black and white women: Ultrasound evidence. Am J Obstet Gynecol. 2003;188:100–107.