Tobacco is a plant native to America whose leaves are processed into products like cigarettes, cigars, and smokeless tobacco. The document discusses why people smoke tobacco, noting stress, parental influence, and addiction as factors. It outlines the major health effects of tobacco as premature death, heart disease, cancer, respiratory illnesses, gum disease, and panic attacks. It concludes by providing additional details on cigarettes containing over 4000 toxic chemicals and tobacco-related deaths in Spain.