Uterine fibroids, or leiomyomas, are tumors or growths made of smooth muscle cells, fibroblasts, and other material that grow in or on the wall of the uterus or womb. They are the most common non-cancerous tumors in women of childbearing age.
Uterine fibroids can cause pain and abnormal bleeding from the uterus. Sometimes, fibroids can make it difficult for a woman to get pregnant or maintain a pregnancy.
Currently, the only cure for fibroids is hysterectomy (pronounced hiss-tur-EK-toh-mee), or removal of the uterus, although fibroids can be treated with other methods.
NICHD scientists are exploring the causes of and treatments for fibroids—including non-hormonal treatments and solutions that preserve a woman’s fertility—and are seeking ways to prevent fibroids from occurring at all.
General Information
Uterine fibroids are tumors or growths made of smooth muscle cells and other tissue that are found in the wall of the uterus (womb).
Uterine fibroids can cause pain, heavy bleeding, a feeling of pressure in the abdomen, and other problems. Some women may have no noticeable symptoms.
Fibroid risk is higher among women who are older, are African American, have obesity, or have a family history of fibroids.
We don’t know what causes uterine fibroids. Evidence suggests that multiple factors play a role.
Fibroids can be diagnosed using imaging technology, such as an ultrasound.
Fibroids can be treated with medication, surgery, and other methods.
Research
NICHD conducts and supports research on uterine fibroids, as well as their treatments and management.
Find a Study
NICHD conducts and supports a variety of clinical research projects related to uterine fibroids.
More Information
Find answers to other common questions about uterine fibroids, such as their effects on fertility and their relation to risk for cancer.
Links to websites of groups that study or provide information about uterine fibroids.
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