High-calorie snacks: lots of energy in a small volume
When weight is falling and appetite is weak, the aim is to get more energy and protein from every bite. This section offers safe, energy-dense snack ideas.

01Short answer
02Simple explanation
Cheese, egg, yogurt.
Peanut butter on bread.
A milkshake.
Nutrition drinks via a dietitian.
03Scientific explanation
ESPEN: in patients at nutritional risk, energy-enriched foods and oral nutritional supplements reduce weight loss.
ESPEN: enough energy and protein matter for preventing weight and muscle loss in people with cancer, and nutritional status should be assessed regularly.
NCI: practical eating tips exist for treatment side effects such as nausea, taste changes and mouth sores.
04What happens in the body?
Enriching
Milk powder, butter, olive oil and cheese can be added to porridge and soup.

Storage
Keep an opened nutrition drink in the fridge and finish it within the stated time.

Dietitian
If you are losing weight, have no appetite or need a special diet, ask to see the hospital dietitian.
Food safety
Food-safety rules for neutropenia (see “Handwashing: the simplest protection” and “Eggs and dairy: safe choices”) apply at every stage.
05Nutrition: four steps
Assess, swap the risky, cook safely, eat regularly.







06Key points at a glance
| Topic | In brief |
|---|---|
Enriching | Milk powder, butter, olive oil and cheese can be added to porridge and soup. |
Storage | Keep an opened nutrition drink in the fridge and finish it within the stated time. |
Dietitian | If you are losing weight, have no appetite or need a special diet, ask to see the hospital dietitian. |
Food safety | Food-safety rules for neutropenia (see “Handwashing: the simplest protection” and “Eggs and dairy: safe choices”) apply at every stage. |
07Key terms
- Energy density
- Many calories in a small volume.
- Oral nutritional supplement
- A medical protein-and-energy drink.
- Dietitian
- A nutrition specialist.
- Protein
- A nutrient for repairing muscles and tissues.
- Neutropenia
- Low neutrophils.
08Key points
- Energy in every bite.
- Remember protein.
- Keep it safe.
- A diet is not a treatment.
- Talk to a dietitian.
09Frequently asked questions
Are chocolate and sweets OK?
They give calories but little protein; not instead of real food.
Can I buy nutrition drinks myself?
Better to choose them with a dietitian.
Can a special diet cure leukemia?
No. Good nutrition helps you cope with treatment, but it does not cure.
10Questions for your doctor
Take these questions to your appointment. The ones you save are collected on the “My questions” page and stay on this device only.
Are chocolate and sweets OK?
Can I buy nutrition drinks myself?
Can a special diet cure leukemia?
12Sources
- National Cancer Institute. Eating Hints: Before, During, and After Cancer Treatment
- ESPEN. ESPEN practical guideline: Clinical Nutrition in cancer (2021)
- Leukemia & Lymphoma Society. Food and Nutrition
- World Health Organization. Healthy diet fact sheet
- Memorial Sloan Kettering Cancer Center — About Herbs. Nigella sativa
- National Cancer Institute. Complementary and Alternative Medicine for Patients
- USDA. FoodData Central
- Memorial Sloan Kettering Cancer Center — About Herbs. Pomegranate
- Memorial Sloan Kettering Cancer Center — About Herbs. Resveratrol
- National Cancer Institute. Laetrile/Amygdalin (PDQ®)–Patient Version
Enriching
Storage
Dietitian