The best foods for IBS (irritable bowel syndrome) include low FODMAP foods, lean protein, healthy fats, certain fruits, and vegetables. FODMAP stands for fermentable oligosaccharides, disaccharides, monosaccharides, and polyols. Foods that are high in these carbohydrates can cause gas, bloating, and abdominal pain by slowly fermenting in the intestines.
Foods that are low in saturated fat can also help ease IBS symptoms. Try the following foods to help ease IBS symptoms.
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Lean Protein
Lean protein foods digest easily, and the gut bacteria that help break down food don't ferment lean protein, which means you will have far less gas production.
You should be able to eat the following proteins with confidence if you have IBS:
- White meat chicken
- White meat turkey
- Lean pork
- Lean cuts of beef (such as sirloin, filet, top round, eye round, and bottom round)
- Extra firm tofu
Fatty cuts of meat are rich in saturated fat. These fats are harder to break down and cause intestinal inflammation that can make IBS symptoms worse. Even dark chicken or turkey meat can be problematic for some people with IBS.
Choose Free-Range Meats
The only exceptions to the rule may be grass-fed beef, pasture-raised pork, or free-range poultry. Animals raised in these ways contain more "healthy" polyunsaturated fatty acids (PUFAs) that can minimize gut inflammation and be gentler on the intestines if you have IBS.
Eggs
Eggs digest easily and are a safe choice for people with IBS. Eggs can be enjoyed hard-boiled, soft-boiled, scrambled, or poached. Omelets and frittatas can be your meal of choice for breakfast, lunch, or dinner, and make a great option when eating out in a restaurant.
With that said, not every person's body responds to eggs in the same way. Some people with IBS are sensitive to the proteins in egg whites, while others react to the higher fat content of egg yolks.
You may need to go through some trial and error to see what egg preparations work best for you if you have IBS.
Fatty Fish
Fatty cold-water fish are high in PUFAs known as omega-3 fatty acids that have robust anti-inflammatory effects. As gut inflammation is known to contribute to IBS symptoms, eating more omega-3-rich fish can help.
These include fatty fish such as:
- Anchovies
- Black cod
- Herring
- Mackerel
- Salmon
- Sardines
- Whitefish
Vegetables
People with IBS tend to avoid vegetables because they believe they will make their symptoms worse. These include sulfur-containing cruciferous vegetables like cabbage and Brussels sprouts that cause gas.
However, vegetables are very good for your gut flora (the bacteria and yeast that aid with digestion) and your overall gut health.
If you find vegetables hard to digest, start by gradually adding those that are less likely to cause gas and bloating, including:
- Bamboo shoots
- Bell peppers
- Carrots
- Celeriac
- Corn
- Eggplant
- Fennel
- Green beans
- Parsley
- Parsnip
- Potato
- Scallions
- Squash
- Sweet potato
- Tomato
- Turnip
- Water chestnut
- Zucchini
You may also find that cooked vegetables are more gentle on your stomach than raw vegetables. You can steam, sauté, or roast vegetables, but avoid adding spices or butter.
Leafy Greens
In addition to the IBS-friendly vegetables listed above, leafy greens are packed with nutrients and are unlikely to cause gut fermentation.
If you can tolerate them raw, leafy greens can be added to smoothies, juices, or salads. However, if you are like most people with IBS, you may find you tolerate cooked greens better.
Leafy greens to add to an IBS-friendly diet include:
- Arugula
- Bok choy
- Collard greens
- Endive
- Kale
- Radicchio
- Spinach
- Swiss chard
These leafy greens can be sauteed or added to soups and stews.
Fruits
Like vegetables, fruits have nutrients that are good for your gut flora. However, some fruits have higher FODMAPs than others. The FODMAPs in fruits are mainly sorbitol and excess fructose.
You can reap the nutritional benefits of fruits while better managing your IBS symptoms by consuming the following low-FODMAP fruits:
- Avocado
- Banana
- Blueberry
- Cantaloupe
- Honeydew melon
- Kiwi
- Papaya
- Raspberry
- Rhubarb
- Strawberry
Soluble Fiber and IBS
Research suggests that soluble fiber may help relieve IBS symptoms. In particular, soluble fiber may improve constipation in IBS because it makes stools softer and easier to pass.
Some IBS-friendly foods that provide soluble fiber include oats, nuts, seeds, avocados, bananas, sweet potatoes, carrots, and eggplant.
Nuts
Nuts are a good source of fiber, protein, and omega-3 fatty acids. They can also make you feel full after a meal so you'll be less likely to snack.
You can enjoy nuts by the handful or as nut butter. To avoid saturated or trans fat that can promote gut inflammation, go for raw nuts rather than those that are roasted, flavored, spiced, or sweetened.
These nuts are ideal for meals or snacks if you have IBS:
- Almonds (limit 10)
- Brazil nuts
- Hazelnuts (limit 10)
- Macadamia nuts
- Pecans
- Pine nuts
- Walnuts
Don't Overdo It
Be careful not to overconsume nuts because they contain insoluble fiber that can make diarrhea worse if you have diarrhea-predominant IBS (IBS-D).
Seeds
Seeds are great sources of fiber and may benefit people with constipation-predominant (IBS-C).
They are also nutritionally dense and contain antioxidants, omega-3 fatty acids, and minerals. Seeds can be sprinkled on salads or oatmeal, added to smoothies, or used to flavor cooked foods.
The seeds most beneficial to an IBS-friendly diet include:
- Chia seeds
- Cumin seeds
- Fennel seeds
- Flaxseeds
- Pumpkin seeds
- Sunflower seeds
Roasting and Grinding Seeds
Some harder seeds like cumin seed, fennel seed, and flaxseed may need to be toasted and ground to be more digestible. Toasting can be done on the stove in a dry pan, while grounding can be done with mortar and pestle or in a coffee grinder.
Certain Grains
Grains that contain primarily soluble fiber and have little insoluble fiber may be tolerated with IBS. Examples include:
- Oats
- Oat bran
- Rice bran
- Gluten-free pasta
- White rice
- Corn and corn flour
- Quinoa
Lactose-Free Dairy
Many people with IBS are lactose intolerant, where they can't digest lactose, a sugar found in dairy products. Lactose intolerance can lead to digestive symptoms like bloating, cramping, and diarrhea.
Dairy-free options include:
- Lactose-free cow's milk
- Lactose-free yogurt (unsweetened)
- Rice milk
- Almond milk
- Coconut milk
- Aged hard cheeses
- Matured or ripened cheeses, such as brie, camembert, and feta
Fermented Foods
Fermented foods contain many natural strains of probiotics. Probiotics are beneficial bacteria and yeasts that help normalize the gut flora and aid with digestion.
Probiotics are also useful if you have active IBS-D as they can restore healthy bacteria that have been lost through diarrhea.
Probiotic-rich foods for an IBS-friendly diet include:
- Kefir
- Kombucha
- Kimchi
- Pickles
- Sauerkraut
Fermented Soy
Miso and tempeh are soy-based products that are rich in probiotic bacteria but can cause gas and bloating in some people.
Bone Broth
For centuries, broth made from animal bones was a staple in human diets. Bone broths (made from stewing bones in water and vegetables) are thought to contain nutrients that are healthy for gut flora and the intestinal lining.
Some studies suggest that bone broth may also have anti-inflammatory effects that can help ease abdominal cramping and diarrhea.
Foods to Avoid
Certain foods and beverages are more likely to trigger IBS symptoms, so it is recommended that they be avoided. These include:
- High FODMAP foods
- Fatty meats
- Fried foods
- Processed meats, snacks, and sweets
- Beans and legumes
- Soda and seltzer
- Caffeinated beverages
- Alcohol
- Chocolate
- Sugar substitutes
Summary
You can ease your IBS symptoms by eating a balanced diet that is low in FODMAPs and saturated fat. These include lean meats, eggs, fatty fish, leafy greens, nuts, seeds, and fruits that are lower in sugar. Fermented foods may also be good for the gut flora if you have IBS.