Nutrition Guide for Cancer Patients

A practical guide to eating well during and after cancer treatment, with Sri Lankan meal ideas and tips for managing food-related side effects.

Good nutrition is one of the most powerful tools in your cancer journey. The right food helps your body tolerate treatment, heal faster, and maintain strength. This guide provides practical, Sri Lankan-friendly advice.

Eating During Chemotherapy

  • Eat small, frequent meals every 2-3 hours instead of 3 large meals
  • Focus on protein: eggs, fish, chicken, dhal, tofu, milk, curd, and cheese
  • Stay hydrated: aim for 8+ glasses of fluids daily (water, king coconut water, clear soups)
  • If food tastes metallic, try using plastic utensils and adding lemon or ginger
  • Cold foods may be easier to eat when you feel nauseous
  • Avoid raw or undercooked food when your immunity is low
  • Ginger tea or ginger biscuits can help with nausea

Eating During Radiation

  • Stay well-hydrated - radiation can cause dehydration
  • If radiation is to the head/neck area, soft, moist foods are easier to swallow
  • Avoid very hot, spicy, or acidic foods if you have mouth or throat soreness
  • Smoothies and nutritional drinks can help when eating is difficult
  • High-calorie, nutrient-dense snacks help maintain weight

Eating After Surgery

  • Protein is essential for wound healing: eggs, fish, chicken, dhal, nuts
  • Start with clear liquids, then soft foods, then regular diet as directed
  • Vitamin C-rich foods help healing: guava, papaya, oranges, amla
  • Iron-rich foods help if you lost blood: spinach, beetroot, liver, red meat
  • If you had abdominal surgery, introduce foods slowly to avoid bloating

Sri Lankan Foods That Help

Our traditional foods are packed with nutrition for cancer patients.

Kola Kenda (Herbal Porridge)

Rich in nutrients and easy to digest. Add gotukola, hathawariya, or mukunuwenna for extra nutrition.

King Coconut Water (Thambili)

Natural electrolytes, gentle on the stomach, and helps with hydration during treatment.

Gotukola

Rich in vitamins and minerals. Can be eaten as a salad (gotukola sambol) or added to kola kenda.

Moringa (Murunga)

Leaves are a powerhouse of protein, iron, and vitamins. Add to curries, soups, or kola kenda.

Jak Fruit (Kos/Polos)

High in fibre, vitamins, and energy. Both ripe and unripe forms are nutritious.

Dhal Curry

Excellent source of plant protein, easy to digest, and gentle on the stomach.

Curd and Treacle

Good source of calcium and probiotics. The sweetness can help when appetite is low.

Ginger Tea

Helps relieve nausea. Boil fresh ginger in water with a little honey.

Foods to Avoid

Betel (Bulath) & Areca Nut — Strongly linked to oral cancer. Avoid completely.
Tobacco in all forms — Increases cancer risk and interferes with treatment effectiveness.
Alcohol — Can interact with medications and weaken immunity during treatment.
Excessive Salt Fish (Jaadi) — Processed and preserved foods are linked to increased cancer risk.
Raw or Undercooked Food — Risk of infection when immunity is low during chemo. Cook all food thoroughly.
Unverified Herbal Remedies — Some herbal treatments can interfere with cancer drugs. Always consult your doctor.

General Nutrition Tips

  • Keep a food diary to track what you can and cannot tolerate
  • Don't force yourself to eat - try again later with different foods
  • Make mealtimes pleasant: sit at a table, use nice plates, eat with family
  • If appetite is very low, prioritise high-calorie, high-protein foods
  • Consider consulting a dietitian at your hospital for personalised advice
  • Avoid fad diets or extreme restrictions - your body needs balanced nutrition now
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