IBD flare-up diet
Reviewed by Dr. Nikita Dinger, Founder & CEO, BioMeBar. Last reviewed 7 October 2026.
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Who this is for
You live with Crohn’s disease or ulcerative colitis, you are in a flare, and you are wondering what to put on the plate when appetite is poor and the toilet is close at hand. This page offers general food ideas for a flare. It does not replace your gastroenterologist or dietitian. A flare-up diet is short-term and restrictive by design. It is not meant to be permanent, and it should be set up with your care team, especially if you have lost weight, have a stricture, or take immune-suppressing medicines. For background see ulcerative colitis, Crohn’s disease and IBD versus IBS.
The idea behind it
In IBD the gut lining is inflamed. During a flare, rough, high-residue foods can irritate it or cause cramps and urgency, and the bowel absorbs less, so nutrition and fluids can fall short quickly. Dietary advice at these times usually aims to keep you eating enough protein and calories, to choose softer and well-cooked foods, and to avoid things that you personally find worsen symptoms. No single diet has been shown to control IBD on its own. Medicines do that work, and food supports it. When the flare settles, most people are encouraged to widen their diet again. See IBD remission support.
What to eat
Choose foods that are soft, low in rough fibre and simple to digest, in small, frequent meals.
- Plain khichdi of rice and peeled moong dal, well cooked, with a little ghee or oil.
- Rice with thin, strained dal, or dal water (dal ka paani) for fluid and some protein.
- Idli, soft rice-based dosa and thin rice kanji.
- Well-cooked, peeled vegetables: lauki, peeled tori, pumpkin, carrot, peeled potato, mashed or soft cooked.
- Eggs, soft boiled or scrambled, and fish or chicken poached, steamed or in a thin stew.
- Banana, stewed apple (peeled), ripe papaya and similar soft fruit.
- Curd or buttermilk if you tolerate dairy; some people with IBD are lactose intolerant, so test in small amounts.
- Oral rehydration solution (ORS) and coconut water when stools are loose.
- Smooth nut butters or ground almond in small portions if tolerated.
Eating more protein often matters in a flare, since the body uses more of it. A dietitian can add oral nutrition supplements if you cannot manage enough food.
What to limit or go slowly with
Many people find these difficult during a flare: raw salads, vegetable skins, whole seeds and nuts, whole millets and bran, whole pulses with skins (rajma, chole, whole moong), cabbage family vegetables, mushrooms, corn, and dried fruit. Fried and very oily foods, very spicy dishes, alcohol, fizzy drinks, and large amounts of caffeine or sugar-free sweeteners (sorbitol) can worsen cramps and diarrhoea. If you have a narrowing in the bowel, your doctor may ask you to avoid fibre-rich foods more strictly. Everyone is different, so keep a food diary and share it with your dietitian. Do not drop whole food groups on your own, and do not follow an internet “IBD diet” without supervision.
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A sample day
| Meal | Idea |
|---|---|
| Breakfast | Two idlis with thin sambar (strained of vegetables if needed), or soft poha without peanuts |
| Lunch | Rice, strained dal, mashed lauki or pumpkin, a soft egg or steamed fish |
| Snack | Ripe banana, a glass of buttermilk or ORS |
| Dinner | Plain moong dal khichdi with a little ghee, mashed potato or carrot |
Eat in five or six small servings if large meals are hard.
Habits that help
- Keep fluids going through the day, especially with diarrhoea. Sip, do not gulp.
- Eat small meals at regular times, even if appetite is low.
- Cook by boiling, steaming or pressure cooking. Remove skins and seeds.
- Chew thoroughly and eat slowly.
- Light walking when you feel up to it, but rest as needed.
- Keep a note of what foods, stress and sleep patterns come before a bad day.
- Keep taking prescribed medicines. Food is not a substitute.
- Ask about vitamin D, iron, B12 and folate checks, as deficiencies are common.
If appetite is poor, see each small meal as an opportunity and not a failure. Even a few spoons of khichdi with ghee and a glass of buttermilk or ORS counts. Keep ready-to-eat options at hand, such as boiled eggs, ripe bananas and idlis, so you are not waiting for energy to cook. Family and friends can help by preparing batches of soft, plain food during a flare.
When to see a doctor first
Contact your gastroenterologist urgently if you have blood or mucus in stools that is worse than usual, fever, severe or constant abdominal pain, vomiting, a swollen belly, signs of dehydration (dizziness, very dark urine), more than your usual number of stools at night, or rapid weight loss. If you have not been diagnosed and have these symptoms, see a doctor before changing your diet, since diet can delay a proper diagnosis.
Common questions
How long should a flare diet last?
Usually it is a temporary measure while symptoms settle, then foods are brought back step by step with your dietitian.
Is curd safe in IBD?
Many people tolerate it, and some do not. Try a small amount and observe.
Do probiotics help during a flare?
Research is mixed and depends on the condition and the product. Ask your gastroenterologist before starting anything, including synbiotics. See taking synbiotics with medication.
Can food cause my IBD?
No single food is known to cause it. Food can affect symptoms, though, and that is where a dietitian helps.
Sources
- ECCO guidelines on nutrition in inflammatory bowel disease
- ESPEN guideline on clinical nutrition in inflammatory bowel disease
- ICMR-NIN Dietary Guidelines for Indians
Talk to us
If you would like to know whether BioMeBar can support you, message us on WhatsApp. Tell us your symptoms and your pincode and we will take it from there. Not sure where to start? Take the free gut assessment, which takes about three minutes.
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BioMeBar provides nutrition and gut health guidance and does not replace medical care. See a doctor for severe, persistent or worrying symptoms.