Resembling 90 percent of women are found to be with breast cancer; Heather Rogers who is of 46 had no family history of the disease. She was healthy and never well thought-out high risk.

And like various cancer patients, she speculates whether her disease was caused by chemicals in the surroundings. However she's frustrated that doctors simply don't know.

Rogers, of Alexandria supposed that they've made a lot of progress and for that she is really grateful for. But she was surprised that, after all these years, there are still so many unrequited questions.

While the American Cancer Society estimates that about 6 percent of all cancer deaths are caused by environmental pollution causes - or about 34,000 lost lives each year - the group doesn't suggest specific advice on which chemicals to stay away from reducing breast-cancer risk.

Julia Brody of Silent Spring Institute, an advocacy group that studies breast cancer and the environment assumed that scientists will never have "definitive" retorts. She said that cancers usually take decades to develop and it is the results of people who are exposed to a countless mix of chemicals over a natural life.