Cigarettes are small cylindrical rolls of finely cut tobacco leaves wrapped in paper. They are designed to be smoked, releasing a mixture of chemicals and nicotine, which is the addictive substance in tobacco. Many people smoke cigarettes for various reasons, including relaxation or socializing, but they can have serious health effects, such as lung cancer and heart disease. Despite the known risks, cigarettes remain popular in many parts of the world. Governments and health organizations, like the World Health Organization, have implemented campaigns to reduce smoking rates. These efforts include warning labels, public smoking bans, and support for quitting, aiming to protect public health and reduce tobacco-related illnesses.