The Center For Integrated Healing provides the following guidelines for persons with cancer:

Eat fresh, wholesome, unrefined natural foods.
Eat whole grain foods.
Eat at least four to six servings of fresh fruit and vegetables each day.
Completely avoid refined sugar.
No dairy products.
Avoid high fat diet, especially a diet high in animal fats.
Red meat consumption should be minimized.
The occasional; consumption of poultry from a reliable source.
Avoid all processed meats.
Deep sea fish are a good source of omega-3 fatty acids.
Extra virgin olive oil and hemp oil are recommended.
Do not use margarine.
Completely avoid coffee, pop and sweetened juices.
Drink green tea.
Experiment with herbal teas.
Buy organic food.
Look for pesticides in animal products.
Eat a variety of foods for balanced nutrition.
Gently cook foods.
Avoid fried foods.