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In study after study, the causal relationship between cigarette smoking and lung cancer has been firmly established. Less so with marijuana. Smoking marijuana does damage cells in the lungs and airways—however, the damaged cells die rather than reproduce. They fail to become malignant.
In a 2005 study at UCLA, Professor Donald Tashkin’s research actually suggested that [...]
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Cigarette smoking has been identified as the second leading risk factor for death from any cause worldwide. In 2000, an estimated 4.83 million deaths were attributed to cigarette smoking globally, with nearly half occurring in the developing world. With a population of 1.3 billion, China is the world's largest producer and consumer of tobacco and bears a large proportion of deaths attributable to smoking worldwide.
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