More than 200 chemicals including industrial solvents, pesticides, dyes, gasoline and diesel exhaust, cosmetics ingredients, hormones, pharmaceuticals and a chemical in chlorinated drinking water cause breast cancer in animal tests, according to a compilation of scientific reports published today by the American Cancer Society. There is a growing body of evidence linking environmental contaminants to breast cancer, the leading killer of U.S. women in their late 30s to early 50s. Researchers concluded that reducing exposure to the compounds could prevent many women from developing the disease.  read more »