Breast cancer: Pollution link remains hazy

What's the case for environmental pollutants contributing to breast cancer? Circumstantial evidence keeps patients, doctors, advocates and scientist asking this question, but so far no clear relationship between exposure and disease has been shown in people.

Known risks for breast cancer include family history, mutations in the BRCA1 and BRCA2 genes, a woman's reproductive history — the age at which she gets her first period, the number of children she has and when she enters menopause — and lifestyle factors such as cigarette and alcohol use, diet and exercise.

Experts say the development of disease in any particular person is likely spurred by a combination of these and other factors.   Read More

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