Treatment FAQ

how does radiation treatment affect the body?

by Sven Daugherty IV Published 2 years ago Updated 2 years ago
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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.Jul 1, 2020

Full Answer

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

More items...

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. ...

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What are the most common side effects of radiation therapy?

Early and late effects of radiation therapy 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.

What are the long-term side effects of radiation treatment?

What are the most common long-term side effects of radiation?Cataracts.Hair loss.Hearing loss.Memory loss ("It's hard to determine how much memory loss or cognitive dysfunction is related to a tumor and how much is related to radiotherapy," says Dr. Nowlan.

How long does radiation stay in your body after cancer treatment?

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.

Does radiation therapy affect the entire body when you receive the treatment?

Radiation therapy is called a local treatment. This means that it only affects the area of the body that is targeted. For example, radiation therapy to the scalp may cause hair loss. But people who have radiation therapy to other parts of their body do not usually lose the hair on their head.

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.

What are the disadvantages of radiation therapy?

What are the disadvantages? Radiotherapy can cause side effects, including tiredness, sickness and runny poo (diarrhoea). If you have chemoradiotherapy, you may get side effects from the chemotherapy.

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 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 is the success rate of radiation therapy?

When it comes to early stages of disease, patients very frequently do well with either brachytherapy or external beam radiation. Success rates of around 90% or higher can be achieved with either approach.

How long after radiation do you start to feel better?

Most side effects go away within 1–2 months after you have finished radiation therapy.

How many sessions of radiotherapy is normal?

Most people have 5 treatments each week (1 treatment a day from Monday to Friday, with a break at the weekend). But sometimes treatment may be given more than once a day or over the weekend.

What does radiation fatigue feel like?

Feeling very tired and lacking energy (fatigue) for day-to-day activities is the most common side effect of radiation therapy to any area of the body. During treatment, your body uses a lot of energy dealing with the effects of radiation on normal cells.

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...

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.

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.

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.

Do you lie still during radiation?

It's imperative that you lie still during treatment, so finding a comfortable position is vital. To do this, you'll lie on the same type of table that's used during radiation therapy. Cushions and restraints are used to position you in the right way and to help you hold still.

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.

What is the energy that travels as a wave or particle?

Radiation is the energy that travels as a wave or particle. Radiation can be categorized into non-ionizing or ionizing depending on the radiated particle’s energy. Radioactive materials that emit α, β, or γ radiation are the common sources of ionizing radiation.

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.

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, ...

How long does radiation stay in the body?

Lower doses are delivered with implants that remain in the body longer, often a few days.

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 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 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 Cancer Treatment Affect the Immune System?

Chemotherapy (chemo) and radiation therapy (also called radiotherapy) kill cancer cells. The problem is, they also kill rapidly dividing healthy cells.

How Strong Is Your Immune System After Cancer Treatment?

After chemo and radiation, your immune system can stay suppressed for several months.

Ways to Support Your Immune System After Chemo and Radiotherapy

After chemo and/or radiation it’s important to protect yourself from infection. You can do this by: 2

When to Seek Professional Treatment

It’s important to get treatment for illness or infection right away. Symptoms to watch for include: 7

Summary

Chemotherapy kills fast-growing cells, which includes many healthy cells, along with cancer cells. Bone marrow cells are frequently damaged and unable to produce white blood cells. This hampers your immune system.

A Word From Verywell

More people are surviving and thriving after cancer all the time. Once you beat the disease, though, you can’t let up your guard. Impaired immunity can pose a real threat.

Learn more about each treatment, their differences, side effects, and more

Jennifer Welsh is a Connecticut-based science writer and editor with over ten years of experience under her belt. She’s previously worked and written for WIRED Science, The Scientist, Discover Magazine, LiveScience, and Business Insider.

What Is Chemotherapy?

One of the oldest treatments for cancer is chemotherapy, in which drugs are given through an intravenous (IV) injection or orally. Chemotherapy can have effects system-wide, which means it impacts your whole body. 1

What Is Radiation?

Radiation is a high-energy invisible light wave. Because it has a lot of energy, it can be directed at cancer cells to damage their genetic material, ultimately killing them. 2

Benefits and Risks of Chemotherapy

Chemotherapy is an essential treatment option for many cancers. The drugs used in chemotherapy are often given so that they can reach and kill cancer cells system-wide, outside of the primary tumor your doctor may have discovered.

Which Is Harder on the Body: Chemo or Radiation?

It is difficult to say what cancer therapy will be more difficult for your body to handle. Different types and dosages of both chemotherapy and radiation will have different effects.

Can Chemo and Radiation Be Used Together to Treat Cancer?

Some cancers can be treated with just radiation. These are most often cancers caught early—before they've grown large or started to spread.

Managing the Side Effects of Cancer Treatment

Many of the side effects of cancer treatment can be effectively managed or lessened. Palliative care (treatment to reduce the burden of symptoms) is an important part of any cancer treatment plan.

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Overview

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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 protons or other types of energy also can be used. The term "radiation therapy" most often refers to external beam radiation therapy. During this type of radiation, the high-energy bea…
See more on mayoclinic.org

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.
See more on mayoclinic.org

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 exam...
See more on mayoclinic.org

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…
See more on mayoclinic.org

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…
See more on mayoclinic.org

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.
See more on mayoclinic.org

Clinical Trials

  • Explore Mayo Clinic studiesof tests and procedures to help prevent, detect, treat or manage conditions.
See more on mayoclinic.org

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