According to a Harvard run study red meat increases a womans risk for a certain type of breast cancer. this particular type of breast cancer is hormonaly driven.
Red meat has already been shown to contribute to one's risk for colon cancer.
further study is needed to fully coroborate the findings, but it's not looking good for red meat, or those who provide it.
here's the article from MSNBC
"Red Meat May Raise Breast Cancer Risk"