Nutrition and daily life

Grains — food card: rice, buckwheat, bulgur, oats

Plov, porridge, bulgur — grains are the base of our cuisine and the body’s main source of energy. This card explains the kinds of grain, their benefits and how to choose them during treatment.

Last updated: ~2 min read
Different grains provide energy during treatment
Figure 1.Different grains provide energy during treatment.

01Short answer

Grains (rice, buckwheat, bulgur, oats, barley) are the main source of energy and also provide B vitamins, magnesium and fibre. Whole grains contain more fibre and are usually preferred in ordinary times. With diarrhea, mucositis or gut problems, soft grains such as white rice and oat porridge may be easier. Cool cooked rice quickly, eat it within a day and reheat it until steaming.

02Simple explanation

Grains give carbohydrates, the main fuel for the brain and muscles.

Whole grains (buckwheat, brown rice, oats) contain more fibre and vitamins.

White rice and semolina are soft and gentler on a sensitive gut.

Cooked rice left warm for a long time can cause food poisoning.

03Scientific explanation

Whole grains: according to the Harvard Nutrition Source they are linked with lower risk of heart disease and type 2 diabetes.

Bacillus cereus: the NHS advises cooling cooked rice within an hour, keeping it in the fridge no more than a day and reheating it only once.

Low-fibre diet: the NCI suggests white rice, white bread and oatmeal during diarrhea.

04What happens in the body?

What do grains provide?

Carbohydrate, some protein, B vitamins, iron, magnesium and fibre. 100 g of cooked rice gives about 130 kcal.

A translucent wheat kernel with its bran, germ and core lit up.
Figure 2.A whole grain has bran, germ and a starchy core.

Which to choose?

On good days, whole grains such as buckwheat, bulgur and oats. With diarrhea, nausea and mouth sores, white rice, semolina and oat porridge.

Storage

Keep dry grains in a closed, dry container. Throw them away if you see mould or insects or notice an odd smell.

Cooking

Rinse the grain and cook it until fully soft. Porridges can be cooked gently in milk or water.

A pot of steaming rice porridge with a wooden spoon in warm light.
Figure 3.Soft porridge is an easy food on hard days.

Plov

Do not keep cooked plov on the stove for long; cool leftovers quickly and reheat them until steaming the next day.

05Grains: four steps

Keep dry, choose by how you feel, cook soft, cool rice fast.

Keep dry — In a sealed jar.1Keep dryIn a sealed jar.
Choose by need — White or whole grain.2Choose by needWhite or whole grain.
Cook soft — Until tender.3Cook softUntil tender.
Cool fast — 1–2 hours, eat in a day.4Cool fast1–2 hours, eat in a day.
EnergyAll day long.
DigestionThe right choice.
SafetyProper storage.

06Grains compared

GrainWhen it helpsNote
White riceDiarrhea, mucositisLow fibre, soft
BuckwheatOrdinary daysIron and magnesium
BulgurOrdinary daysFilling, fibre-rich
OatsBothSoft porridge, soluble fibre
SemolinaMouth soresVery soft

* The table is general information; a dietitian can advise what suits you.

07Key terms

Whole grain
Grain that keeps its bran and germ.
Bran
The fibrous outer layer of grain.
Germ
The vitamin-rich core of the grain.
Low-fibre diet
Eating that is gentle on the gut.
Bacillus cereus
A bacterium that can grow in cooked rice.
Starch
The complex carbohydrate in grain.

08Key points

  • Grains are the main energy source.
  • Whole grains on ordinary days.
  • White rice and oats during diarrhea.
  • Keep dry grains sealed.
  • Cool cooked rice fast.
  • Reheat rice only once.

09Frequently asked questions

Is rice good during treatment?

Yes, it is easily digested energy, especially with diarrhea. Combine it with vegetables and protein.

Do I need a gluten-free diet?

Not usually, unless you have coeliac disease. Do not cut grains without your doctor’s advice.

Can I cook porridge with milk?

Yes, with pasteurised milk. It adds protein and calcium.

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.

  1. Is rice good during treatment?

  2. Do I need a gluten-free diet?

  3. Can I cook porridge with milk?

My questions

12Sources

  1. NHS. Starchy foods and carbohydrates
  2. NHS. Can reheating rice cause food poisoning?
  3. Harvard T.H. Chan School of Public Health — The Nutrition Source. Whole Grains
  4. National Cancer Institute. Eating Hints: Before, During, and After Cancer Treatment
  5. JAMA Oncology, 2018. Johnson SB et al. Complementary Medicine, Refusal of Conventional Cancer Therapy, and Survival Among Patients With Curable Cancers
  6. National Cancer Institute (NCI). Appetite Loss and Cancer Treatment
  7. American Cancer Society. Nutrition for People with Cancer
  8. World Health Organization (WHO). Healthy diet — fact sheet
  9. Clinical Nutrition, 2021. ESPEN practical guideline: Clinical Nutrition in cancer
  10. National Cancer Institute (NCI). Constipation and Cancer Treatment
Medical disclaimerThis information is for educational purposes only and does not replace medical advice.
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