What does nutrition support in cancer treat?

Nutrition support in cancer treats nutrition problems that make eating, drinking, or maintaining strength difficult. It may help manage loss of appetite, unintended weight loss, cancer cachexia, swallowing problems, mouth soreness, nausea, taste changes, constipation, or diarrhoea. The aim is to match food, fluids, supplements, and practical strategies to your symptoms and treatment plan.

An oncology dietitian may review your usual intake, symptoms, weight pattern, medicines, treatment schedule, and cultural food preferences. Advice might include softer or cooler foods for mouth irritation, texture changes for swallowing difficulty, smaller nourishing meals when appetite is low, or a prescribed oral supplement. When eating is not enough or not possible, the team may discuss tube feeding or nutrition through a vein.

Tell the cancer team early about reduced intake, painful swallowing, vomiting, diarrhoea, constipation, or changes in taste and smell. Keep a simple record of foods, fluids, symptoms, and bowel changes. Choose foods you tolerate, take small frequent sips when advised, and ask before using herbal products or high-dose supplements because they may affect treatment.

Contact your team promptly if you cannot keep fluids down, cough or choke while swallowing, have worsening mouth pain, or are eating far less than usual. Urgent assessment is needed for signs of dehydration, confusion, severe weakness, or breathing difficulty during meals.

Could a dietitian assess my symptoms and intake? Which foods or supplements fit my treatment? What should I do if swallowing or mouth pain limits eating? When would tube or intravenous nutrition be considered?