
Radiation therapy damages cells by destroying the genetic material that controls how cells grow and divide. While both healthy and cancerous cells are damaged by radiation therapy, the goal of radiation therapy is to destroy as few normal, healthy cells as possible.
What are the long - term effects of radiation treatment?
- your skin might look darker than it was before in the treated area – as if it is suntanned
- your skin in the treatment area will always be slightly more sensitive to the sun
- your skin might feel different to touch
- your hair might grow back a different colour or texture in the treatment area
- you might have permanent hair loss within the treated area
What are the negative effects of radiation therapy?
- Diarrhea
- Hair loss in the treatment area
- Mouth changes such as soreness, dryness and difficulty swallowing (if radiation to head and neck area)
- Nausea and vomiting
- Sexual impact (tenderness and soreness of genital organs if radiation to this area)
- Blood count changes
What to expect when having radiation therapy?
What to Expect During Radiation Therapy Treatment
- Before Radiation Therapy. At Affiliated Oncologists, each treatment plan is created to meet the individual needs of the patient, but there are some steps that are taken for each patient.
- During Radiation Therapy. There are two main types of radiation therapy: external beam radiation and internal radiation therapy.
- After Radiation Therapy. ...
What to expect during and after radiation treatments?
- Radiation cystitis. If the radiation damages the lining of the bladder, radiation cystitis can be a long-term problem that causes blood in the urine or pain when passing urine.
- Urinary incontinence. ...
- Fistulas. ...

What happens to your body when you go through radiation?
The most common early side effects are fatigue (feeling tired) and skin changes. Other early side effects usually are related to the area being treated, such as hair loss and mouth problems when radiation treatment is given to this area. Late side effects can take months or even years to develop.
How long does radiation keep working in your body after treatment?
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. It may be some time before you know whether the radiation therapy has controlled the cancer.
Is radiation worse than chemo?
The radiation beams change the DNA makeup of the tumor, causing it to shrink or die. This type of cancer treatment has fewer side effects than chemotherapy since it only targets one area of the body.
Do tumors grow back after radiation?
Normal cells close to the cancer can also become damaged by radiation, but most recover and go back to working normally. If radiotherapy doesn't kill all of the cancer cells, they will regrow at some point in the future.
What can you not do during radiation treatment?
Avoid raw vegetables and fruits, and other hard, dry foods such as chips or pretzels. It's also best to avoid salty, spicy or acidic foods if you are experiencing these symptoms. Your care team can recommend nutrient-based oral care solutions if you are experiencing mucositis or mouth sores caused by cancer treatment.
What are 5 harmful effects of radiation?
Here are a few common health effects or harmful effects of radiation on the human body.Hair. Loss of hair fall occurs when exposure to radiation is higher than 200 rems.Heart and Brain. Intense exposure to radiation from 1000 to 5000 rems will affect the functioning of the heart. ... Thyroid. ... Blood System. ... Reproductive Tract.
What are 5 effects of radiation?
Radiation Effects on HumansDose (rem)Effects5-20Possible late effects; possible chromosomal damage.20-100Temporary reduction in white blood cells.100-200Mild radiation sickness within a few hours: vomiting, diarrhea, fatigue; reduction in resistance to infection.4 more rows
What are the worst side effects of radiotherapy?
Treatment areas and possible side effectsPart of the body being treatedPossible side effectsBrainFatigue Hair loss Memory or concentration problems Nausea and vomiting Skin changes Headache Blurry visionBreastFatigue Hair loss Skin changes Swelling (edema) Tenderness5 more rows•Jan 11, 2022
What comes first chemo or radiation?
Radiation generally starts after chemotherapy is done.
Why would you use chemo instead of radiation?
Summary. Chemotherapy and radiation therapy are each used to treat cancer. The decision about which one is used depends on the type, location, and spread of the cancer. Chemotherapy is a systemic treatment, while radiation therapy is often a localized treatment but may be systemic.
Is radiation the same as chemotherapy?
Chemotherapy and radiation therapy are both treatments for cancer – the uncontrolled growth and spread of cells to surrounding tissues. Chemotherapy, or “chemo,” uses special drugs to shrink or kill cancer cells. Radiation therapy, or “radiation,” kills these cells with high-energy beams such as X-rays or protons.
Is radiation worth the risk?
Benefits and Effectiveness. Radiation therapy (also called radiotherapy) is a highly effective cancer treatment with wide-ranging uses. Radiation therapy leads to cancer cure in many patients (either alone or with other treatments) and relieves symptoms or prolongs survival in more advanced cancers.
If You’Re Getting Radiation Therapy to The Brain
People with brain tumors often get stereotactic radiosurgery (radiation given in one large dose) if the cancer is in only one or a few sites in the...
If You’Re Getting Radiation Therapy to The Head Or Neck
People who get radiation to the head and neck might have side effects such as: 1. Soreness (or even open sores) in the mouth or throat 2. Dry mouth...
If You’Re Getting Radiation Therapy to The Breast
If you have radiation to the breast, it can affect your heart or lungs as well causing other side effects.
If You’Re Getting Radiation Therapy to The Chest
Radiation treatment to the chest may cause side effects such as: 1. Sore throat 2. Swallowing problems 3. Loss of appetite 4. Cough 5. Shortness of...
If You’Re Getting Radiation Therapy to The Abdomen (Belly)
If you are getting radiation to your stomach or some part of the abdomen (belly), you may have side effects such as: 1. Nausea 2. Vomiting 3. Belly...
If You’Re Having Radiation Therapy to The Pelvis
Radiation therapy to the pelvis (for example, as treatment for bladder, ovarian, or prostate cancer) can cause side effects such as: 1. Bladder pro...
What are the symptoms of radiation sickness?
Radiation is a type of energy. Frequent exposure to even small amounts of radiation could result in the onset of some of the symptoms of radiation sickness. These symptoms may include: Headache. Loss of appetite. Vomiting, diarrhea, and nausea. Rapid heartbeat.
How many cancer patients are treated with radiation?
Nearly two-thirds of all patients with cancer who receive radiation therapy. There are no good estimates of how many of these patients will develop complications due to radiation therapy. Common general side effects of radiation therapy: The reason radiation therapy works is that it damages the DNA of the cells.
Why are children at risk for radiation sickness?
Fetuses and children are at particular risk of radiation sickness because their cells divide rapidly, and radiation can disrupt that process. There is also some correlation between excess radiation exposure and an increased risk of cancer.
What are the different types of radiation?
Different types of radiation include: Electromagnetic radiation such as radio waves, heat, X-rays, gamma radiation, and even visible light. Particle radiation such as alpha radiation, neutron radiation, and beta radiation.
Where does ionizing radiation come from?
About half of the ionizing radiation we're exposed to comes from nature. It's in rock, soil, and the atmosphere. The other half comes from man-made sources such as medical tests and treatments and nuclear power plants.
Does radiation damage cancer cells?
Rapidly dividing cells, such as cancer cells, are more affected by radiation therapy than normal cells. The body may respond to this damage with fibrosis or scarring, although this is generally a mild process and typically does not cause any long-term problems that substantially affect the quality of life.
Can radiotherapy be used with chemotherapy?
Radiotherapy may be used alone or synergistically with chemotherapy or immunotherapy. The type of radiation therapy used depends on the disease and specific type of cancer being treated. Radiotherapy plays a part in. Primary curative treatment ( head and neck cancer ).
How does radiation help cancer?
When radiation is combined with surgery, it can be given: 1 Before surgery, to shrink the size of the cancer so it can be removed by surgery and be less likely to return. 2 During surgery, so that it goes straight to the cancer without passing through the skin. Radiation therapy used this way is called intraoperative radiation. With this technique, doctors can more easily protect nearby normal tissues from radiation. 3 After surgery to kill any cancer cells that remain.
Why do people with cancer need radiation?
Why People with Cancer Receive Radiation Therapy. Radiation therapy is used to treat cancer and ease cancer symptoms . When used to treat cancer, radiation therapy can cure cancer, prevent it from returning, or stop or slow its growth. When treatments are used to ease symptoms, they are known as palliative treatments.
What is intraoperative radiation therapy?
During surgery, so that it goes straight to the cancer without passing through the skin. Radiation therapy used this way is called intraoperative radiation.
What is brachytherapy with liquid source?
Learn more about brachytherapy. Internal radiation therapy with a liquid source is called systemic therapy. Systemic means that the treatment travels in the blood to tissues throughout your body, seeking out and killing cancer cells.
What is the best radiation treatment for thyroid cancer?
A systemic radiation therapy called radioactive iodine, or I-131, is most often used to treat certain types of thyroid cancer.
What is the treatment for cancer that has spread to the bone called?
Pain from cancer that has spread to the bone can be treated with systemic radiation therapy drugs called radiopharmaceuticals.
What is external beam radiation therapy?
External Beam Radiation Therapy. External beam radiation therapy comes from a machine that aims radiation at your cancer. The machine is large and may be noisy. It does not touch you, but can move around you, sending radiation to a part of your body from many directions.
How does radiation affect cancer cells?
Radiation creates small breaks within the DNA of cancer cells, preventing the cells from growing and dividing, and often causing them to die. Radiation therapy uses high-enegery waves or particles to destroy or damage tumor cells. Because cancer cells divide rapidly, they’re more likely to succumb to DNA damage, ...
What is radiation therapy?
Along with surgery and chemotherapy, radiation therapy has long been a mainstay of cancer treatment. It uses high-energy waves or particles such as x-rays, gamma rays, electrons, or protons to destroy or damage tumor cells.
How long does radiation stay in the body?
Lower doses are delivered with implants that remain in the body longer, often a few days.
How long do radioactive pellets stay in your body?
In a treatment known as brachytherapy, doctors implant small radioactive pellets, or “seeds,” that emit radiation for a few weeks or months but remain in the body permanently.
How are radiation beams absorbed?
The beams pass quickly through the body and are absorbed by special shields positioned around the patient. Some cancers are treated with internal radiation therapy, in which radioactive material, sealed in a container, is implanted next to or inside a tumor.
Does radiation damage DNA?
Because cancer cells divide rapidly, they’re more likely to succumb to DNA damage, but radiation can damage DNA in normal cells as well. The damage that radiation therapy does to normal cells may lead to a variety of side effects, which generally improve over time.
Do implants have radioactive material?
As with patients receiving temporary implants, the body fluids and personal items of patients with permanent implants are not radioactive. Because it is low-level, the radiation usually doesn’t travel much beyond the area being treated, so there’s little chance of exposing others to radiation.
How does radiation damage cells?
Radiation therapy damages cells by destroying the genetic material that controls how cells grow and divide. While both healthy and cancerous cells are damaged by radiation therapy, the goal of radiation therapy is to destroy as few normal, healthy cells as possible.
Why do people get radiation therapy?
Why it's done. More than half of all people with cancer receive radiation therapy as part of their cancer treatment. Doctors use radiation therapy to treat just about every type of cancer. Radiation therapy is also useful in treating some noncancerous (benign) tumors.
What is the treatment for cancer?
Radiation therapy. External beam radiation uses high-powered beams of energy to kill cancer cells. Beams of radiation are precisely aimed at the cancer using a machine that moves around your body. Radiation therapy is a type of cancer treatment that uses beams of intense energy to kill cancer cells. Radiation therapy most often uses X-rays, but ...
What type of radiation is used in X-rays?
The term "radiation therapy" most often refers to external beam radiation therapy. During this type of radiation, the high-energy beams come from a machine outside of your body that aims the beams at a precise point on your body.
How long does radiation treatment last?
Expect each treatment session to last approximately 10 to 30 minutes. In some cases, a single treatment may be used to help relieve pain or other symptoms associated with more-advanced cancers. During a treatment session, you'll lie down in the position determined during your radiation simulation session.
How long does it take for cancer to respond to radiation?
In some cases, your cancer may respond to treatment right away. In other cases, it may take weeks or months for your cancer to respond.
What is the purpose of neoadjuvant therapy?
Before surgery, to shrink a cancerous tumor (neoadjuvant therapy) After surgery, to stop the growth of any remaining cancer cells (adjuvant therapy) In combination with other treatments, such as chemotherapy, to destroy cancer cells. In advanced cancer to alleviate symptoms caused by the cancer.
How long has radiation been studied?
minus. Related Pages. Scientists have been studying the effects of radiation for over 100 years; so we know quite a bit about how radiation interacts with living tissue, and its effect on the body. Because we can measure radiation and because we understand its health effects, we can work safely around it.
Is radiation poisonous?
It’s All About the Dose! As with other types of toxins, “the dose makes the poison”. We receive low doses of radiation from our natural environment every day. We know that radiation at high doses can cause cancer, could harm fetuses, and can even lead to death. Learn more about dose and health effects of radiation.
Is radiation harmful to children?
A dose to a part of the body is less harmful than a dose to the whole body. Children and young adults are more sensitive to the effects of radiation. Learn more about different factors that affect dose.
Can radiation damage DNA?
Radiation can damage the DNA in our cells. High doses of radiation can cause Acute Radiation Syndrome (ARS) or Cutaneous Radiation Injuries (CRI). High doses of radiation could also lead to cancer later in life. Learn more about health effects of radiation exposure. Page last reviewed: December 7, 2015.
What to expect when getting radiation therapy?
What to Expect When Having Radiation Therapy. It is normal to feel worried or overwhelmed when you learn that you will need radiation therapy. However, learning more about this type of cancer treatment may help you feel more prepared and comfortable.
How long does radiation therapy last?
It is the most common radiation therapy treatment for cancer. Each session is quick, lasting about 15 minutes. Radiation does not hurt, sting, or burn when it enters the body.
What type of doctor is responsible for radiation therapy?
Radiation oncologist. This type of doctor specializes in giving radiation therapy to treat cancer. A radiation oncologist oversees radiation therapy treatments. They work closely with other team members to develop the treatment plan. Radiation oncology nurse.
What is simulation in radiation therapy?
Simulating and planning treatment. Your first radiation therapy session is a simulation. This means it is a practice run without giving radiation therapy. Your team will use imaging scans to identify the tumor location.
Why is it important to be in the same position for radiation?
It is important for your body to be in the same position for each treatment. Your radiation oncology team cares about your comfort. Talk with the team to find a comfortable position that you can be in every time you come in for radiation therapy.
How often should you check for radiation?
During your treatment, your radiation oncologist will check how well it is working. Typically, this will happen at least once a week. If needed, they may adjust your treatment plan.
What is informed consent for radiation?
Giving permission for radiation therapy. If you choose to receive radiation therapy, your health care team will ask you to sign an "informed consent" form. Signing the document means: Your team gave you information about your treatment options. You choose to have radiation therapy.
What happens to the body after radiation?
These problems happen when radiation damages your body. For example, scar tissue can affect the way your lungs or your heart works. Bladder, bowel, fertility, and sexual problems can start after radiation to your belly or pelvis. Another possible late effect is a second cancer.
How does radiation affect skin?
It may look red, sunburned, or tanned. It may also get swollen or blistered. Your skin may also become dry, flaky, or itchy. Or it may start to peel.
How long after radiation therapy does skin feel better?
Don't use any tape, gauze, or bandages on your skin unless the doctor tells you to. Your skin should start to feel better a few weeks after therapy ends. But when it heals, it may be a darker color. And you’ll still need to protect yourself from the sun even after radiation therapy has ended.
How long do radiation side effects last?
There are two kinds of radiation side effects: early and late. Early side effects, such as nausea and fatigue, usually don’t last long. They may start during or right after treatment and last for several weeks after it ends, but then they get better.
How does radiation kill cancer?
Radioembolization. Cancer Caused by Radiation Therapy. Radiation therapy treats cancer by using high-energy waves to kill tumor cells. The goal is to destroy or damage the cancer without hurting too many healthy cells. This treatment can cause side effects, but they’re different for everyone. The ones you have depend on the type ...
How long does it take for radiation to show up?
Late side effects, such as lung or heart problems, may take years to show up and are often permanent when they do. The most common early side effects are fatigue and skin problems. You might get others, such as hair loss and nausea, depending on where you get radiation.
How to get rid of fatigue from cancer?
Get plenty of rest, be as active as you can, and eat the right foods. Work with a counselor or take a class at your cancer treatment center to learn ways to conserve energy, reduce stress, and keep yourself from focusing on the fatigue. Save your energy for the activities that are most important to you.
How long does it take for a person to recover from radiation?
Skin changes. Urinary and bladder changes. 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.
Does radiation make you tired?
People feel fatigue in different ways and you may feel more or less fatigue than someone else who is getting the same amount of radiation therapy to the same part of the body. Other radiation therapy side effects you may have depend on the part of the body that is treated.
Does radiation therapy cause cancer?
Radiation Therapy Side Effects. Radiation not only kills or slows the growth of cancer cells, it can also affect nearby healthy cells. Damage to healthy cells can cause side effects. Many people who get radiation therapy have fatigue. Fatigue is feeling exhausted and worn out.

Overview
Why It's Done
- More than half of all people with cancer receive radiation therapy as part of their cancer treatment. Doctors use radiation therapy to treat just about every type of cancer. Radiation therapy is also useful in treating some noncancerous (benign) tumors.
Risks
- Radiation therapy side effects depend on which part of your body is being exposed to radiation and how much radiation is used. You may experience no side effects, or you may experience several. Most side effects are temporary, can be controlled and generally disappear over time once treatment has ended. Some side effects may develop later. For example, in rare circumsta…
How You Prepare
- Before you undergo external beam radiation therapy, your health care team guides you through a planning process to ensure that radiation reaches the precise spot in your body where it's needed. Planning typically includes: 1. Radiation simulation.During simulation, your radiation therapy team works with you to find a comfortable position for you during treatment. It's imperative that you li…
What You Can Expect
- External beam radiation therapy is usually conducted using a linear accelerator — a machine that directs high-energy beams of radiation into your body. As you lie on a table, the linear accelerator moves around you to deliver radiation from several angles. The linear accelerator can be adjusted for your particular situation so that it delivers the precise dose of radiation your doctor has order…
Results
- If you're receiving radiation to a tumor, your doctor may have you undergo periodic scans after your treatment to see how your cancer has responded to radiation therapy. In some cases, your cancer may respond to treatment right away. In other cases, it may take weeks or months for your cancer to respond. Some people aren't helped by radiation therapy.
Clinical Trials
- Explore Mayo Clinic studiesof tests and procedures to help prevent, detect, treat or manage conditions.