12/07/2011 02:19 EST | Updated 02/06/2012 05:12 EST

Top breast cancer risks: Obesity, lack of exercise, hormone use and radiation, panel says

SAN ANTONIO - Women concerned about breast cancer should worry less about cellphones and hair dyes and worry more about weighing or drinking too much, exercising too little, using menopause hormones and getting too much radiation from medical tests. So says a new report on environmental risks by a respected panel of science advisers.

By environment they mean everything not governed by genes