The short answer
Some treatments weaken the immune system, making food-borne illness more likely and more serious. Safe food handling — clean, separate, cook, and chill — and avoiding higher-risk foods like raw or undercooked items may help lower the risk.
Some treatments weaken the immune system, raising the risk of food-borne illness.
The basics: clean, separate, cook, and chill.
Avoid raw or undercooked meat, eggs, and seafood, and unpasteurized foods.
Wash hands, produce, and surfaces well, and keep hot foods hot and cold foods cold.
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The full explanation.
The simple version
Some cancer treatments make it harder for your body to fight germs. That means food safety matters more than usual, because food-borne illness can hit harder. A few simple habits can lower the risk.
The four basics
The core food-safety steps are easy to remember:
- Clean — wash hands, produce, utensils, and surfaces well
- Separate — keep raw meat, poultry, and seafood away from other foods
- Cook — cook foods to safe temperatures (a food thermometer helps)
- Chill — refrigerate leftovers promptly and keep cold foods cold
Foods to be careful with
During treatment, it often helps to avoid higher-risk foods:
- Raw or undercooked meat, poultry, eggs, and seafood
- Unpasteurized milk, juice, and soft cheeses
- Raw sprouts
- Foods that are past their date or left out too long
Ask your care team — precautions depend on your treatment and blood counts.
When to call
Tell your care team if you have signs of food-borne illness — such as fever, vomiting, or diarrhea — especially if your immune system is weakened. When counts are low, a fever can be an emergency, so ask your team what number to call.
A note before we begin
This information is educational and is not a substitute for medical advice. For your own care, talk with your doctor, nurse, pharmacist, registered dietitian, or care team.
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Words to know
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Common questions
▸Why does food safety matter more during treatment?
Some cancer treatments lower the body's ability to fight germs. That makes food-borne illness (food poisoning) both more likely and potentially more serious. Extra care with food can help lower the risk.
▸What are the basic food-safety steps?
Four simple habits: Clean (wash hands, produce, and surfaces), Separate (keep raw meats away from other foods), Cook (cook foods to safe temperatures), and Chill (refrigerate promptly and keep cold foods cold).
▸Which foods should I be careful with?
It often helps to avoid raw or undercooked meat, poultry, eggs, and seafood; unpasteurized milk, juice, and soft cheeses; raw sprouts; and foods past their date. Ask your care team for advice for your situation.
▸How do I know if I need extra precautions?
Ask your care team, especially if your blood counts are low or you're at higher risk of infection. They can tell you which precautions apply to you and for how long.
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