Tobacco is a plant product that contains nicotine, a highly addictive chemical. It is most commonly consumed through smoking cigarettes, cigars, or pipes, though it can also be used in smokeless forms like chewing tobacco and snuff. Tobacco use is a leading cause of preventable diseases and deaths worldwide, contributing to serious health issues such as lung cancer, heart disease, stroke, and chronic respiratory illnesses. Despite public health campaigns and regulations, tobacco remains widely used due to nicotine addiction, cultural factors, and aggressive marketing by tobacco companies. Quitting tobacco can significantly improve health and reduce the risk of life-threatening conditions.