The health effects of tobacco are the circumstances, mechanisms, and factors of tobacco consumption on human health. Epidemiological research has been focused primarily on cigarette tobacco smoking, which has been studied more extensively than any other form of consumption.Tobacco is the single greatest cause of preventable death globally. Tobacco use leads most commonly to diseases affecting the heart and lungs, with smoking being a major risk factor forheart attacks, strokes, chronic obstructive pulmonary disease (COPD) (including emphysemaand chronic bronchitis), and cancer (particularly lung cancer, cancers of the larynx and mouth, and pancreatic cancer). It also causes...
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