Final answer:
Cancer is difficult to cure due to its complexity and challenges in treatment. Traditional treatments have limitations and can harm normal cells. Researchers are exploring immunotherapies and genomic mapping to develop more effective treatments.
Step-by-step explanation:
Cancer is difficult to cure due to its complexity and the challenges associated with treating it. One of the reasons is that cancer comprises multiple diseases with a common cause: uncontrolled cell growth. Cancer is a result of environmental mutagens and the accumulation of random mutations.
Another reason is that traditional cancer treatments, such as surgery, chemotherapy, and radiation, have limitations. These treatments can harm normal cells along with cancer cells, and it is often challenging to specifically target cancer cells without causing damage to healthy tissues.
Researchers are working on developing newer therapies that harness the immune system to target cancer cells specifically. Additionally, efforts are being made to map the human genome to better understand the genetic basis of cancer and develop treatments that target specific pathways implicated in cancer development.