Cancer treatment has evolved significantly over the years, and immunotherapy is now changing how many cancers are treated worldwide. Unlike conventional treatments that directly attack cancer cells, immunotherapy works by strengthening the body’s immune system to recognize and fight cancer more effectively. This advanced treatment approach is being used in several cancers including lung cancer, melanoma, bladder cancer, and certain blood cancers. For many patients, immunotherapy has opened new possibilities for long-term disease control and improved quality of life.