Many patients ask:
Most patients **can eat normally** during radiotherapy — but some may need to make small adjustments depending on the part of the body being treated.
General rule: Eat what you can, when you can
Your body needs energy and protein to heal. Try to maintain regular meals, even if smaller.
Foods that are generally safe for all patients
- Rice, bread, oatmeal, potatoes
- Chicken, fish, eggs, tofu
- Soups, stews, arroz caldo, lugaw
- Fruits and vegetables (as tolerated)
- Milk, yogurt, or Ensure/Boost-type supplements
When eating may need adjustment — based on treatment area
1. Head & neck radiotherapy
Possible problems: sore throat, dry mouth, difficulty swallowing.
Best choices:
- soft foods (lugaw, soups, mashed potatoes)
- smoothies or yogurt drinks
- hydrating liquids
Avoid:
- spicy food
- dry crackers or tough meat
- very hot food
2. Abdominal radiotherapy
Possible issues: nausea or bloating.
Tips:
- eat small, frequent meals
- avoid oily, greasy, or overly rich foods
- stay hydrated
3. Pelvic radiotherapy
Possible issues: diarrhea or cramps.
Helpful foods:
- bananas, applesauce
- crackers or toast
- skinless chicken
- low-fiber vegetables
Avoid:
- milk (if it triggers diarrhea)
- raw vegetables
- fried foods
- caffeinated drinks
Can I drink coffee?
Yes — in moderation. But **if pelvic treatment causes diarrhea**, limit or avoid coffee temporarily.
Can I drink alcohol?
Best to avoid, especially during:
- head & neck radiotherapy
- treatments causing nausea
- any course combined with chemotherapy
What if I lose appetite?
Very common during treatment. Do not force large meals.
Try these instead:
- small but frequent meals
- high-calorie snacks (peanut butter, yogurt, nuts)
- nutrition drinks (Ensure, Boost, Enercal)
- smoothies with fruits and milk
When to call your doctor
- rapid weight loss
- persistent nausea/vomiting
- severe diarrhea
- difficulty swallowing even liquids
Need help planning your meals?
You can message us for general guidance or ask your oncology team for a personalized nutrition plan.
This article is for general education only and not medical advice.