can smoking cigarettes affect pregnancy test results Health Risks Of During and How Quitting Helps Smoking Even One Cigarette While

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12 Haematite mining (underground) with exposure to radon: Mining hematite, an underground source of iron, workers are simultaneously exposed to radon a radioactive carcinogen, which can cause a large increase in the risk of lung cancer

Again, some facts demonstrate this: Exposure to environmental tobacco smoke (ETS) is responsible for approximately 3,000 lung cancer deaths per year among nonsmokers ( Healthy People 2000 , emphasis ours)

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