Article: Study: Lifetime breast cancer risk at 82 percent for gene mutation; exercise can help

PAUL RECER, AP Science Writer
AP Worldstream
10-23-2003
Dateline: WASHINGTON
Exercising and maintaining a healthful weight when young can delay the onset of breast cancer in women at very high risk of the disease, according to a study of women with a genetic mutation that gives them an 82 percent lifetime risk of developing the disease.

Researchers also found that women with mutations in the BRCA1 or BRCA2 gene have a 23 percent to 54 percent risk of ovarian cancer, depending on which gene is affected.

The study, appearing Friday in the journal Science, showed that lifestyle during adolescence played a role in when these high-risk women developed breast cancer. The finding was consistent with ...

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