source: Leukemia & Lymphoma Society (LLS) summary/abstract:
Food safety is important during and after cancer treatments. The immune system is often weakened by cancer treatments, making the body more susceptible to food-borne illnesses.
Neutropenia is a condition where you have lower-than-normal levels of neutrophils (a type of white cell). If you have neutropenia, your doctor may suggest for you to follow special guidelines, which can help protect you from bacteria and other harmful organisms found in some food and drinks.
If you had a stem cell transplant, your diet may be stricter than that of a patient who had chemotherapy or radiation therapy and no transplant.