Nutrition and Cancer: Fueling Your Body for Healing

Why Nutrition Matters During Cancer Treatment

One of the most common questions I receive from patients after a cancer diagnosis is, “What should I eat?” Friends and family may offer well-meaning advice, no meat, no dairy, no soy, only green juices, more beetroot. The list is endless, and often overwhelming.

While certain dietary changes may help reduce the risk of developing cancer, once a diagnosis has been made, the nutritional focus shifts. It becomes less about prevention and more about supporting your body through healing and recovery.

Proper nutrition during cancer treatment is essential. It helps maintain strength, supports immune function, improves energy levels, and may reduce the severity of treatment-related side effects. Whether you’re undergoing chemotherapy, radiation, or surgery, eating well ensures your body has the best possible resources to fight the disease and heal.

The Role of Nutrition in Cancer Care

Cancer treatments can impact appetite, digestion, and energy. You may find yourself eating less or struggling with nausea, fatigue, or weight changes. Maintaining a balanced, nutrient-rich diet helps:

• Prevent malnutrition
• Support tissue repair and immune response
• Improve energy levels and mood
• Alleviate side effects such as nausea, fatigue, or constipation

A well-nourished body is better equipped to withstand treatments and recover more efficiently.

Key Nutrients to Focus On

• Protein: The Building Block for Healing
  • Protein is vital for cell repair, muscle maintenance, and immune function.
  • Top sources: Lean meats, poultry, fish, eggs, beans, lentils, tofu, and low-fat dairy.
• Healthy Fats: For Energy and Immunity
  • Healthy fats help fight inflammation and provide sustained energy.
  • Top sources: Avocados, nuts, seeds, olive oil, and fatty fish like salmon.
• Vitamins and Minerals: For Immune Support
  • Micronutrients such as vitamins A, C, D, and E help strengthen the immune system and combat oxidative stress.
  • Top sources: Colourful fruits and vegetables, whole grains, and fortified foods.
• Carbohydrates: For Sustained Energy
  • Whole grains, fruits, and vegetables provide energy, fibre, and essential nutrients. Avoid overly processed sugars, and instead opt for nutrient-dense carbohydrates.

Hydration Is Just as Important

Staying hydrated is critical, especially if you’re experiencing side effects like vomiting, diarrhoea, or decreased appetite. Hydrating options: Water, herbal teas, coconut water, and broths. Avoid sugary or caffeinated drinks where possible.

Final Thoughts: Nutrition as a Partner in Your Healing

While everyone’s journey is unique, one thing remains constant: your body needs fuel to fight and recover from cancer. Eating well doesn’t have to mean following restrictive diets or miracle food trends. Instead, focus on consuming a variety of nutrient-dense, whole foods that support your strength and well-being.

Always consult with your healthcare provider or a registered dietitian before making major dietary changes. They can help you create a personalised nutrition plan that complements your treatment and aligns with your individual needs.

Remember: Food is more than fuel—it’s an essential part of your recovery.

About Dr. Sharpe

Dr. Natalie Sharpe is an expert oncologist with over 20 years of experience, having trained and worked in some of the most prestigious medical institutions in the United States. Now a full-time physician with the Doctors Hospital team, she treats patients with all types of cancer. However, one of her primary passions remains the management of breast cancer, a field closely tied to her early research at Columbia University.

Your Chemo Companion

At Doctors Hospital, your changing health is our primary concern. A new diagnosis of cancer can be unexpected, scary and disappointing. Your Chemo Companion is a self-guide to all things related to the treatment of your cancer. It provides the answers to some of the most asked questions from our patients. Feel free to discuss the contents of this Companion with your doctor, nurse or pharmacist.