There's new research about how breast cancer is related to envirnomental factors.
Here's a quote:
"More than 200 chemicals -- many found in urban air and everyday consumer products -- caused breast cancer in animal tests, according to a compilation of scientific reports published today."

Further on it says "Experts say that family history and genes are resonsible for a small percentage of breast cancer cases but that environmental or lifestyle factors such as diet are probably involved in the vast majority. Overall, exposure to mammary gland carcinogens is widespread..."

It seems to contradict the standard knowledge about breast cancer and means that we all need to be more circumspect about the products we consume.