The progression of the disease and side effects related to chemotherapy may make it difficult to eat adequately. Good Nutrition is however a very important factor for the well being of the patient. The body needs a lot of energy in order to fight the disease and this can be obtained by eating food containing a high caloric value and proteins. This may be a challenge since the side effects of chemotherapy may sometimes be severe and will reduce the individual's appetite. It is very important that the patient talks with his physician about the food he/she needs to eat. A nutritionist may give invaluable advice to the patient.

Certain foods can help also to deal with certain side effects such as constipation, diarrhea, nausea & vomiting, fatigue and others.  It is important to eat small and frequent meals rather than large and less frequent meals.  This will help to deal with diarrhea, fatigue and nausea & vomiting. Constipation can also be alleviated by eating food containing a high level of fiber while for diarrhea it is recommended a diet consisting of food with low-fiber content. It is also important that food is cooked well and to refrain from eating raw food since some treatments make you more prone to infections.