Cancer is potentially fatal. Currently, it is the leading cause of death worldwide. Cancer is a generic term for a large group of diseases involving the rapid creation of abnormal cells that grow beyond their usual boundaries with the potential to invade or spread to other body parts.
Possible signs and symptoms include a lump, prolonged cough, unexplained weight loss, chronic tiredness, fever that occurs mainly at night, and skin changes. Tobacco use, alcohol consumption, unhealthy diet, physical inactivity, and ultraviolet and ionizing radiation are risk factors for cancer.