The common name for the disease caused by tobacco use is lung cancer. This form of cancer primarily develops in the lungs and is strongly associated with smoking or exposure to secondhand smoke. Tobacco contains numerous carcinogens that damage lung tissue and increase the likelihood of tumor formation. Lung cancer often goes undetected in its early stages, resulting in late diagnosis and poor prognosis. Prevention efforts include smoking cessation programs and public health campaigns aimed at reducing tobacco use. Awareness of its severe health risks is critical in combating this leading cause of cancer-related deaths globally.