A new study says the number of young women ages 25 to 39 being diagnosed with metastatic breast cancer has been rising steadily over the last three decades, according to an article on the ABC News website.
According to the article, the incidence of advanced breast disease has risen by 2.1 percent per year between 1976 to 2009, and upward trend was not seen among older women. The reason for the rise is still unknown, however, researchers say rising obesity rates, changes in alcohol and tobacco use, and genetics may be possible causes.
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