Cancer is a disease that occurs when cells in the body grow uncontrollably. Normally, our cells divide and die in a regulated way, but cancer cells ignore these signals. This can lead to the formation of lumps or tumors, which can be benign (non-cancerous) or malignant (cancerous). If left untreated, malignant tumors can spread to other parts of the body, making the disease more serious. There are many types of cancer, such as breast cancer, lung cancer, and skin cancer. Each type has its own causes and treatment options. Early detection through screenings and awareness of symptoms can improve the chances of successful treatment and recovery.