Cancer patients should be particularly cautious with food and drink to avoid foodborne illnesses. Here are some guidelines: 1. Food Preparation: Ensure all food is cooked thoroughly, and avoid raw or undercooked items. Clean fruits and vegetables well before consumption. 2. Storage: Store food at appropriate temperatures to prevent bacterial growth. 3. Hydration: Drink plenty of clean, filtered water to stay hydrated and help the body flush out toxins.