http://www.montrealgazette.com/news/world/Second+hand+smoke+linked+breast+cancer/2187368/story.html"A panel of international medical experts has found a link between exposure to second-hand smoke and breast cancer in pre-menopausal women.
Meanwhile, other research presented Wednesday suggests that women could "virtually eradicate" their risk of developing breast cancer by raising the levels of vitamin D they have in their blood.
A panel of doctors and researchers from medical schools and public-health agencies in the United States and Canada said that in addition to the link to second-hand smoke exposure, it found conclusive scientific evidence linking active smoking to breast cancer in women of all ages.
In light of the findings, warnings about breast-cancer risks should be included in the new set of health-warning labels being developed by Health Canada, said Cynthia Callard, executive director of Physicians for a Smoke-Free Canada.
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Shocking. :sarcasm: