the smoke from the burning cigarette head containing the cancer-causing toxins left more than smoke inhaled by the main-stream into his lungs. In tobacco smoke have nicotine substance not only affects the cardiovascular system, but also on 70 different toxic chemicals that can cause cancer. Especially in this number up to 43 compounds have been shown to cause cancer as benzopyren, nitrosamine, cadmium, nickel, urethane, toluidine.
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