Chemotherapy (also called chemo) is a type of cancer treatment that uses drugs to kill cancer cells.
How chemotherapy works against cancer
Chemotherapy works by stopping or slowing the growth of cancer cells, which grow and divide quickly. Chemotherapy is used for two reasons:
Which types of cancer does chemotherapy treat
Chemotherapy is used to treat many types of cancer. For some people, chemotherapy may be the only treatment you receive. But most often, you will have chemotherapy with other cancer treatments. The types of treatment that you need depend on the type of cancer you have, if it has spread and where, and if you have other health problems. To learn more about treatment for your cancer, see the PDQ® cancer treatment summaries for adult and childhood cancers.
How chemotherapy is used with other cancer treatments
When used with other treatments, chemotherapy can
Chemotherapy can cause side effects
Chemotherapy not only kills fast-growing cancer cells, but also kills or slows the growth of healthy cells that grow and divide quickly. Examples are cells that line your mouth and intestines and those that cause your hair to grow. Damage to healthy cells may cause side effects, such as mouth sores, nausea, and hair loss. Side effects often get better or go away after you have finished chemotherapy.
The most common side effect is fatigue, which is feeling exhausted and worn out. You can prepare for fatigue by
There are many ways you can help manage chemotherapy side effects. For more information, see the section on side effects.
How much chemotherapy costs
The cost of chemotherapy depends on
Talk with your health insurance company about what services it will pay for. Most insurance plans pay for chemotherapy. To learn more, talk with the business office where you go for treatment.
If you need financial assistance, there are organizations that may be able to help. To find such organizations, go to the National Cancer Institute database Organizations that Offer Support Services and search for "financial assistance." Or call toll-free 1-800-4-CANCER (1-800-422-6237) to ask for information on organizations that may help.
What to expect when receiving chemotherapy
Chemotherapy may be given in many ways. Some common ways include
Of all the methods mentioned above, chemotherapy is most often given with an IV, through a thin needle that is placed in a vein on your hand or lower arm. Your nurse will put the needle in at the start of each treatment and remove it when treatment is over. IV chemotherapy may also be given through catheters or ports, sometimes with the help of a pump.
There are many different chemotherapy drugs. Which ones are included in your treatment plan depends mostly on
You may receive chemotherapy during a hospital stay, at home, or as an outpatient at a doctor’s office, clinic, or hospital. Outpatient means you do not stay overnight. No matter where you go for chemotherapy, your doctor and nurse will watch for side effects and help you manage them. For more information on side effects and how to manage them, see the section on side effects.
Treatment schedules for chemotherapy vary widely. How often and how long you get chemotherapy depends on
You may receive chemotherapy in cycles. A cycle is a period of chemotherapy treatment followed by a period of rest. For instance, you might receive chemotherapy every day for 1 week followed by 3 weeks with no chemotherapy. These 4 weeks make up one cycle. The rest period gives your body a chance to recover and build new healthy cells.
It is best not to skip a chemotherapy treatment. But, sometimes your doctor may change your chemotherapy schedule if you are having certain side effects. If this happens, your doctor or nurse will explain what to do and when to start treatment again.
Chemotherapy affects people in different ways. How you feel depends on
Since everyone is different and people respond to chemotherapy in different ways, your doctor and nurses cannot know for sure how you will feel during chemotherapy.
You will see your doctor often. During these visits, they will ask you how you feel, do a physical exam, and order medical tests and scans. Tests might include blood tests. Scans might include MRI, CT, or PET scans.
You cannot tell if chemotherapy is working based on its side effects. Some people think that severe side effects mean that chemotherapy is working well, or that no side effects mean that chemotherapy is not working. The truth is that side effects have nothing to do with how well chemotherapy is fighting your cancer.
Special diet needs while on chemotherapy
Chemotherapy can damage the healthy cells that line your mouth and intestines and cause eating problems. Tell your doctor or nurse if you have trouble eating while you are receiving chemotherapy. You might also find it helpful to speak with a dietitian. For more information about coping with eating problems see the booklet Eating Hints or the section on side effects.
Working during chemotherapy
Many people can work during chemotherapy, as long as they match their work schedule to how they feel. Whether or not you can work may depend on what kind of job you have. If your job allows, you may want to see if you can work part-time or from home on days you do not feel well.
Many employers are required by law to change your work schedule to meet your needs during cancer treatment. Talk with your employer about ways to adjust your work during chemotherapy. You can learn more about these laws by talking with a social worker.