Yahoo! News - Smokers Have Higher Breast Cancer Risk - U.S. Study
WASHINGTON (Reuters) - Women who smoke may have a far higher risk of breast cancer than those who do not, or those who once smoked but quit, U.S. researchers reported on Tuesday.

California women who said they were current smokers had a 30 percent greater incidence of breast cancer than non-smokers, the researchers reported in this week's issue of the Journal of the National Cancer Institute.

Boo!