Cigarette smoking involves inhaling smoke from burning tobacco wrapped in paper. The smoke contains harmful chemicals, including nicotine, tar, and carbon monoxide, which can lead to various health issues. Regular smoking can cause respiratory problems, heart disease, and several types of cancer, particularly lung cancer. Many people start smoking due to social influences or stress relief, but it can quickly become an addiction. Quitting smoking can be challenging, but various resources, such as nicotine replacement therapy and support groups, are available to help individuals overcome their dependence on cigarettes.