Ulcerative Colitis: Find Your Trigger Foods

Medically Reviewed by Neha Pathak, MD on November 01, 2021
3 min read

Which foods cause problems for your ulcerative colitis (UC)? The answer is different for everyone.

To figure out what makes you feel worse, do some detective work.

For several weeks, keep a diary of what you eat and when you have flares. Then look for patterns. Avoid things that seem to cause cramps or a trip to the bathroom. See if your symptoms get better or go away.

Talk to your doctor about what you notice. Your goal should be to eat as many types of healthy foods as you can, so your diet is as balanced as possible.

Many people with UC have trouble with the same items. You may want to cut these out for a while and see if your symptoms ease up:

  • High-fiber foods like bran, nuts, seeds, and popcorn
  • Fatty, greasy items and sauces
  • Dairy products
  • Alcohol


Just because a food is on your problem list doesn't mean you have to give it up. You have choices.

Try to switch from full-fat to low-fat dairy. Or tweak your cooking method: bake or broil meats instead of frying. Bake or stew vegetables rather than eating them raw or lightly cooked.

You can also swap out items in the main food groups.


Common problem foods:

  • Whole-grain breads, bagels, rolls, crackers, cereals, and pasta
  • Brown or wild rice

Better choices:

  • Products made from white or refined flour
  • White rice

Vegetables and Fruits

Common problem foods:

  • Veggies such as broccoli, cauliflower, and Brussels sprouts
  • Leafy greens, including mustard, turnip, and collard greens, and spinach
  • Most raw fruits
  • Raisins and other dried fruits
  • Canned cherries and berries

Better choices:

  • Well-cooked vegetables without seeds
  • Ripe bananas, peeled apples, and melons
  • Soft, canned fruits without added sugar

Meat and Protein

Common problem foods:

  • Fried meats, such as sausage and bacon
  • Luncheon meats, like bologna and salami
  • Hot dogs
  • Dried beans, peas, and nuts

Better choices:

  • Tender, well-cooked meats and poultry
  • Fish
  • Eggs

Milk Products

Common problem foods:

  • Whole milk
  • Half-and-half
  • Sour cream

Better choices:

  • Buttermilk
  • Evaporated milk
  • Low-fat or skim milk
  • Powdered milk
  • Plant-based alternatives, such as soy, almond, or coconut “milks”

Other Dairy Products

Common problem foods:

Better choices:

  • Low-fat or nondairy cheese and ice cream
  • Sherbet
  • Smooth yogurt with live, active cultures and without nuts or berries

Drinks and Sweets

Common problem choices:

  • Sweet fruit juices, sodas, or other drinks made with sugar or corn syrup
  • Caffeinated and carbonated drinks
  • Alcohol
  • Sugarless gums and candies

Better choices:

  • Water
  • Decaf coffee, tea, and sugar-free soft drinks
  • Rehydration beverages, like sports drinks or things used to prevent dehydration in people with stomach viruses, diarrhea, etc.


Lactose is the main, natural sugar in milk and other dairy products. 

If you're lactose intolerant, you'll want to limit or cut out dairy foods that cause problems. Look for lactose-free versions of those foods. Using an enzyme product such as Lactaid may help as well.

Also try other calcium sources, like fortified soy milk, almond milk, or other products that have calcium added to them. Canned salmon and leafy greens also have a lot of calcium.

Check with your doctor to make sure you get enough of this important mineral in your diet.

If you have an operation for your UC, your doctor will ask you to stick to a soft, bland diet while your body heals. Gradually, you can start to eat foods with more fiber.  

Depending on the kind of surgery you have, you might be able to eat anything after you've recovered, even things that caused problems when your UC was active.