Health library
Back to health library
How to cope with cancer side effects
If you're starting a cancer journey, you might wonder if you'll have any side effects from the disease or its treatments. Your cancer care team can tell you what to expect and offer advice to suit your situation. In the meantime, scroll on to learn about some cancer-related side effects and how to manage them.
Pain
Not everyone with cancer will have pain. It affects up to half of people, by one estimate. If pain does occur, it can usually be controlled.
How to cope: Your doctor might prescribe pain medications. Non-drug approaches include techniques that relax or distract you, such as listening to music or focusing on a peaceful scene.
Fatigue
Cancer fatigue isn't the same as feeling tired. It can be exhausting enough to interfere with daily life.
How to cope: Balance rest with exercise—it can boost energy. See a dietitian for advice on foods and drinks to support your energy. Medicines may be needed to treat underlying causes of fatigue, such as anemia.
Nausea and vomiting
Cancer treatment can cause stomach problems, such as nausea and vomiting.
How to cope: Your doctor might prescribe anti-nausea medicines. You can also try a few new eating habits, such as eating bland foods (like toast, crackers or plain yogurt); eating several small meals throughout the day; and avoiding fried, greasy or spicy foods. Sip clear, cool liquids (like apple juice) to prevent dehydration.
Hair loss
Some types of chemotherapy and radiation can cause hair thinning or hair loss. Hair usually grows back after cancer treatment, though it may have a different color or texture.
How to cope: Some people cut their hair short or shave it before it falls out. Others use wigs, scarves or hats or choose to go bald. The key to managing hair loss is to choose what feels right for you.
Brain fog
Some people have short-term thinking problems during cancer treatment. They may have memory lapses or find it hard to focus on a task.
How to cope: Exercise may help sharpen your focus and make you feel more alert. Also try using memory aids like sticky notes, lists or smartphone apps. And focus on doing just one task at a time.
Prevent infections
Did you know that chemo can weaken your resistance to infections?
Reviewed 9/29/2025
Sources
- American Cancer Society. "Changes in Memory, Thinking and Focus (Chemo Brain)." https://www.cancer.org/cancer/managing-cancer/side-effects/changes-in-mood-or-thinking/chemo-brain.html.
- American Cancer Society. "Hair Loss (Alopecia)." https://www.cancer.org/cancer/managing-cancer/side-effects/hair-skin-nails/hair-loss/coping-with-hair-loss.html.
- American Cancer Society. "Loss of Appetite." https://www.cancer.org/cancer/managing-cancer/side-effects/eating-problems/poor-appetite.html.
- American Cancer Society. "Managing Nausea and Vomiting at Home." https://www.cancer.org/cancer/managing-cancer/side-effects/eating-problems/nausea-and-vomiting/managing.html.
- American Cancer Society. "Side Effects of Radiation." https://www.cancer.org/cancer/managing-cancer/side-effects/eating-problems/nausea-and-vomiting/managing.html.
- National Cancer Institute. "Cancer Fatigue." https://www.cancer.gov/about-cancer/treatment/side-effects/fatigue.
- National Cancer Institute. "Pain and Cancer Treatment—Side Effects." https://www.cancer.gov/about-cancer/treatment/side-effects/pain.