The short answer
Food safety matters more during cancer treatment because some treatments make it easier to get sick from contaminated food. NCI recommends cooking meat, fish, and eggs well, keeping hot foods hot and cold foods cold, and choosing produce that can be peeled or washing raw produce very well. Your care team can tell you if your specific treatment calls for extra precautions.
Some cancer treatments make it easier to get sick from contaminated food.
Cooking meat, fish, and eggs well is one of the most effective food safety steps.
Keeping hot foods hot and cold foods cold helps prevent bacteria from growing.
Choosing produce that can be peeled, or washing raw produce very well, adds protection.
Choose how you want to understand this
The full explanation.
The short answer
Food safety takes on extra importance during cancer treatment. The National Cancer Institute explains that some treatments make it easier to get sick from contaminated food, because they can lower the number of white blood cells your body uses to fight infection. The good news is that the steps that help are straightforward: cook food well, manage temperatures carefully, and handle raw produce thoughtfully.
Why it depends
Not everyone's risk is the same. How much extra care makes sense depends on your specific treatment, where you are in your treatment cycle, and your blood counts at a given time — there are periods when infection-fighting white blood cells are especially low and the body has a harder time handling germs, including ones that can come from food. Because of that, some people may need to be more careful than others, and that can change over the course of treatment.
Household routines matter too. Someone who cooks most meals at home has more control over food safety than someone who eats out frequently or relies on packaged or prepared foods. Neither situation is wrong — it just means the steps that help you most may look different depending on how your household typically handles food.
What helps
NCI lists a few specific food safety steps that can lower the chance of foodborne illness:
- Cook meat, fish, and eggs well. Thorough cooking kills harmful bacteria that raw or undercooked food can carry.
- Keep hot foods hot and cold foods cold. Bacteria grow more easily in food that sits at in-between temperatures, so managing how food is stored and served matters.
- Be careful with raw fruits and vegetables. Choosing produce that can be peeled is one option; for anything you eat unpeeled, washing it very well is important.
- Watch expiration dates and how food has been stored, since spoiled or improperly stored food is more likely to carry harmful germs.
- Wash your hands well before preparing or eating food, and make sure others handling your food do the same.
- Keep raw and cooked foods separate when preparing meals, using different cutting boards and utensils where possible, to avoid spreading germs from one to the other.
These habits are good practice for everyone, but they matter more right now because your body may have a harder time recovering if you do get sick from something you ate.
What to discuss with your team
Ask your care team whether your specific treatment raises your risk of foodborne illness, and whether that risk is higher at certain points in your treatment cycle. NCI also points to a dedicated resource called "Food Safety for People with Cancer" that goes into more detail — ask your team if they can share it or something similar. And make sure you know what signs of infection should prompt a call to your team, since infections during treatment can be serious and need prompt attention.
This is general information. Your care team's specific instructions for your treatment always take priority.
Words to know
Tap any term to see what it means.
Common questions
▸Why does food safety matter more during cancer treatment?
Some cancer treatments lower the number of white blood cells that help your body fight infection. That can make it easier to get sick from contaminated food, so food safety steps that are always good habits become more important during treatment.
▸What are the main food safety steps NCI recommends?
Make sure meat, fish, and eggs are well cooked; keep hot foods hot and cold foods cold; and be careful with raw produce — choosing fruits and vegetables that can be peeled, or washing raw produce very well.
▸Is there a specific resource for food safety during cancer treatment?
Yes — NCI points to a resource called 'Food Safety for People with Cancer,' which goes into more detail. Your care team can help you find and apply this kind of guidance to your situation.
Questions to ask your doctor
Being prepared helps you get the most out of your appointments. Save or print these questions.
Tap a question to save it to your list (kept on this device).
Your next step
Your care team's answer depends on your treatment — ask them directly.
Test your knowledge
0 of 4 answered
This quiz checks understanding of educational content only. It is not medical advice. Open this quiz on its own page.
How this page was created
Cancer Explained uses AI to organize and translate information from the authoritative sources cited on each page. Automated checks review claims, citations, clarity, duplication, and potential safety concerns before publication. Our content is not currently reviewed by physicians unless a specific qualified reviewer is named on the page. Cancer Explained provides general education and should not replace advice from your healthcare team.
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. At this time, most Cancer Explained content has not been reviewed by a physician or other healthcare professional. Pages with documented human medical review identify the reviewer, credentials, and review date directly.
Read more about our editorial process, our use of AI, and our corrections policy.
Spotted a problem? Report an error — a factual mistake, broken or outdated source, confusing wording, or anything that seems unsafe. Please do not include names, medical record numbers, dates of birth, addresses, or other identifying medical information in your report.
After using this page, do you understand what to do next?
Anonymous — we only record the answer, never who gave it.