The short answer
Raw fish and shellfish can carry germs that are usually harmless but riskier when chemotherapy lowers your infection-fighting white blood cells. NCI food safety guidance is to choose well-cooked fish and seafood over raw. Fully cooked sushi rolls are lower risk than sashimi or raw-fish rolls. Because your risk changes with your blood counts, your care team's guidance for your treatment comes first.
Raw fish and shellfish can carry germs that are riskier when your white blood cells are low.
NCI food safety guidance favors well-cooked fish and seafood over raw during treatment.
Fully cooked sushi rolls are lower risk than sashimi or raw-fish rolls.
Your infection risk changes over your treatment cycle, so timing and blood counts matter.
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The full explanation.
The short answer
There is no single yes-or-no rule for sushi during chemotherapy, but the general food safety guidance leans toward caution with raw fish. The National Cancer Institute notes that some cancer treatments make it easier to get sick from contaminated food, because they can lower the white blood cells your body uses to fight infection. Raw fish and shellfish are among the foods that can carry germs, so many care teams suggest choosing well-cooked seafood, and fully cooked rolls, over sashimi and raw-fish sushi during treatment. Your care team's guidance for your specific treatment always comes first, because it depends on your treatment and your blood counts.
Why it depends
How careful to be is not the same for everyone. It depends on your specific treatment, where you are in your treatment cycle, and your blood counts at a given time. There are stretches when infection-fighting white blood cells are especially low, and during those windows your body has a harder time handling germs, including ones that can come from raw or undercooked food. So the answer can change over the course of treatment: raw fish that felt like a small risk one week may be one your team asks you to skip during a low-count period.
Where the food comes from matters too. Freshly prepared sushi from a reputable kitchen with careful handling is different from prepackaged raw fish that has sat for a while. Neither removes the underlying point that raw seafood carries more risk than cooked, but handling and freshness do affect how much.
What helps
- Favor cooked over raw. Rolls made with fully cooked fish, cooked shrimp, egg, or vegetables carry less risk than sashimi or raw-fish rolls, because thorough cooking kills many harmful germs.
- Ask about your counts. If your team can tell you when your white blood cell counts are likely to be lowest, you can be extra careful with higher-risk foods during those windows.
- Consider the source. Choose freshly prepared food from places with good hygiene, and be cautious with raw fish that has been sitting out or prepackaged for a long time.
- Keep up general food safety. Wash your hands before eating, keep cold foods cold, and pay attention to freshness and expiration dates — habits that matter more during treatment.
What to discuss with your team
Ask your care team whether they want you to avoid raw fish and shellfish during your treatment, and whether that advice changes at certain points in your cycle. Ask what signs of infection or foodborne illness should prompt a call — during treatment, a fever of 100.4–100.5°F (38°C) or higher can be a sign of a serious infection that needs prompt attention, and problems like vomiting or diarrhea after eating are worth reporting. Sources word this threshold slightly differently, so use the number your own team gave you. Knowing these ahead of time lets you enjoy food with less worry and act quickly if something feels off.
This is general information. Your care team's specific instructions for your treatment always take priority.
Words to know
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Common questions
Can I eat sushi during chemotherapy?
It depends on your treatment and your blood counts. Because chemotherapy can lower the white blood cells that fight infection, NCI food safety guidance favors well-cooked fish and seafood over raw. Many care teams suggest avoiding raw sushi and sashimi during treatment, especially when counts are low.
Are cooked sushi rolls safer than raw ones?
Generally yes. Rolls made with fully cooked fish or vegetables carry less risk than sashimi or rolls made with raw fish, because thorough cooking kills many harmful germs. Handling and freshness still matter, so where and how the food was prepared is worth considering.
Why does raw fish matter more during treatment?
Some treatments lower the number of infection-fighting white blood cells, so germs that a healthy body would usually clear can be more likely to cause illness. Raw or undercooked seafood is one food that can carry those germs.
Questions to ask your doctor
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Last updated: 2026-07-14Next planned review: 2027-07-14
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Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
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Human medical review: not completed. Cancer Explained is not clinician-reviewed, and that is a deliberate design choice rather than a gap we are waiting to close. We restate published federal guidance and cite it; the authority belongs to the source, not to us. That is why every page names where its claims come from — so you can verify us instead of trusting us. Use it to understand your situation and to ask better questions of the people treating you.
How this page was created
Cancer Explained does not originate medical claims. Every page restates guidance already published by the National Cancer Institute, the CDC, the USPSTF and the FDA, in plain language, with the source cited so you can check the original yourself. AI does the translating and organizing; automated checks test claims, citations, clarity and safety before anything publishes. We do not employ clinicians and do not intend to — our work is translation and navigation, not clinical judgment. Nothing here is personal medical advice, and no page can account for your particular situation.
Editorial status: Source verified — This page was created with AI assistance and checked against the sources listed on it. Source checking is not a medical review.
Human medical review: not completed. Cancer Explained is not clinician-reviewed, and that is a deliberate design choice rather than a gap we are waiting to close. We restate published federal guidance and cite it; the authority belongs to the source, not to us. That is why every page names where its claims come from — so you can verify us instead of trusting us. Use it to understand your situation and to ask better questions of the people treating you.
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