What are the differences between chemotherapy and radiation therapy, and how do they function in cancer treatment?

Chemotherapy and radiation therapy are two common cancer treatments that function differently.

Chemotherapy involves the use of drugs to kill cancer cells or stop them from dividing. The drugs are usually administered intravenously or orally and travel throughout the body to target cancer cells. Chemotherapy can be used alone or in combination with other treatments such as surgery or radiation therapy. It is effective in treating various types of cancer, but it can also cause side effects such as nausea, hair loss, and fatigue.

Radiation therapy, on the other hand, uses high-energy radiation to kill cancer cells. The radiation can be delivered externally or internally, depending on the type and location of the cancer. External radiation therapy involves directing a beam of radiation at the cancer from outside the body, while internal radiation therapy involves placing a radioactive source inside the body near the cancer. Radiation therapy can also be used alone or in combination with other treatments. It is effective in treating localized cancers, but it can also cause side effects such as skin irritation, fatigue, and damage to nearby healthy tissue.

In summary, chemotherapy and radiation therapy are two different cancer treatments that function in different ways. Chemotherapy uses drugs to kill or stop the growth of cancer cells, while radiation therapy uses high-energy radiation to destroy cancer cells. Both treatments can be effective in treating cancer, but they can also cause side effects that need to be managed. The choice of treatment depends on various factors such as the type and stage of cancer, the patient's overall health, and the potential risks and benefits of each treatment.