Neither chemo nor radiation is universally "worse"; they are different tools with distinct side effects, but chemotherapy generally causes more widespread, systemic issues (like nausea, hair loss, fatigue) because it travels through the whole body, while radiation's effects are usually localized to the treated area (skin changes, localized fatigue, organ irritation). The severity depends on the cancer type, dose, and individual, with chemo often impacting more organ systems and potentially causing long-term damage, but radiation can also have long-term risks like scarring or organ damage, so doctors choose based on the specific situation.
Radiation vs Chemo: Key Takeaways
Radiation therapy uses high-energy waves or particles to target cancer cells in a specific part of the body. Whereas chemo uses drugs to kill cancer cells throughout the body to kill them. Radiation therapy and chemo are often combined to treat cancer.
Stage II & III: Localized but Advanced Cancer
In Stages II and III, the cancer is larger and may have spread to nearby lymph nodes but not to distant parts of the body. Treatment may include a combination of surgery, chemotherapy, and radiation to manage the disease more aggressively and prevent further spread.
Early side effects
They're usually gone within a few weeks after treatment ends. The most common early side effects of radiation treatment are: Fatigue (feeling very tired) Skin changes.
For example, the following tissues and organs are listed from most radiosensitive to least radiosensitive:
Healthy cells that are damaged during radiation treatment usually recover within a few months after treatment is over. But sometimes people may have side effects that do not improve. Other side effects may show up months or years after radiation therapy is over. These are called late effects.
Types of cancer that are treated with radiation therapy
Brachytherapy is most often used to treat cancers of the head and neck, breast, cervix, prostate, and eye. A type of brachytherapy called radioembolization may be used to treat liver cancer or cancer that has spread to the liver.
If your cancer is resistant to treatment or you are near the end of life, chemotherapy may decrease your quality of life. 4 There may be times when the side effects of chemotherapy are not worth it, especially if other rounds of chemotherapy have been ineffective.
The new study saw nearly 80% of patients with several types of cancer successfully treated using only immunotherapy.
While chemotherapy aims to keep the disease from spreading, radiation focuses on particular cells. Chemotherapy can also affect the entire body, while radiation repairs only the affected cells. Both treatments can cause side effects, including hair loss, nausea and fatigue.
For most people, the cancer experience doesn't end on the last day of radiation therapy. Radiation therapy usually does not have an immediate effect, and it could take days, weeks or months to see any change in the cancer. The cancer cells may keep dying for weeks or months after the end of treatment.
Some anti-cancer drugs may affect cells of vital organs, such as the heart, kidney, bladder, lungs and nervous system. In some cases, chemotherapy can cause long-term problems for the heart, lungs, nerves, kidneys and reproductive or other organs.
Fatigue from chemotherapy tends to be the worst a few days after treatment and then gets better before the next treatment. Fatigue from radiation can start slowly after a few weeks of treatment and get worse as treatment goes on. It may last many months after treatment is finished.
Lung and bronchus, colorectal, pancreatic, and breast cancers are responsible for nearly 50% of all deaths.
Breast cancer, 99.3%. Testicular cancer, 99.2%. Uterine cancer, 94.9%. Kidney cancer, 92.9%.
Many ask, “what cancers don't cause death? Thyroid, testicular, and some skin cancers often have very high survival rates and rarely lead to death.
Bone and soft-tissue sarcomas are the most frequent SMNs following radiation therapy, but skin, brain, thyroid, and breast cancers also can occur. Radiation doses less than 30 Gy tend to be associated with thyroid and brain tumors, whereas doses greater than 30 Gy can evoke secondary sarcomas.
You will have regular follow up appointments. These may be at the radiotherapy department or at your original hospital. There you might see your radiotherapy doctor (clinical oncologist) and specialist nurse. How often you go varies from one hospital to another.
Engaging in physical activity, such as taking walks or doing light workouts, stimulates your body's systems. This stimulation happens through the increase in blood flow and the encouragement of sweating, both of which assist in removing toxins, including radiation byproducts, from your body.
After radiation therapy ends, you will still need to take special care of yourself. It is normal to need extra rest – this means your healthy tissues are rebuilding. Take naps as needed and try to get more sleep at night. Work back into your pre-treatment schedule of activities by reintroducing them a little at a time.
Usually, each radiotherapy appointment takes about 10 to 30 minutes. But you may be in the department for longer. The treatment itself usually only takes a few minutes. Most of the appointment is spent getting you into the correct position and checking your details.