Harvard Gut Doctor Reveals 8 Foods That Cause Bloating

Approximately 10% of individuals encounter post-meal bloating, which commonly manifests as sensations of fullness and gassiness in the abdominal region, according to Dr. Jacqueline Wolf, MD, an associate professor of medicine at Harvard Medical School and a gastroenterologist at Beth Israel Deaconess Medical Center in Boston.

 

As a gastroenterologist and associate professor of medicine at Harvard Medical School, she frequently receive inquiries about the causes of bloating and how to alleviate it.

 

Understanding bloating can be tough, but poorly absorbed foods are a common dietary cause. To alleviate post-meal stomach pain and bloating, it’s advisable to steer clear of the following:

 

 

1. Sweetened foods

 

Approximately 50% of the population experiences fructose malabsorption, where intestinal cells struggle to absorb fructose. While small amounts are generally acceptable, it’s best to avoid foods sweetened with high-fructose corn syrup, including: candy, packaged bread and baked goods, packaged fruit, sweetened dairy products such as yogurt, sauces like ketchup, soft drinks and juice.

 

Instead, opt for whole foods and beverages with lower sugar content. Carbonated beverages can cause bloating; therefore, opting for still water or vegetable juices is recommended.

 

 

2. Fructose-rich fruits

 

If you have fructose sensitivity, it’s best to limit or avoid sweet fruits like apples, watermelon, grapes, grapefruit, nectarines, plums, peaches, ripe bananas, prunes, and raisins. Instead, you can satisfy your fruit cravings by opting for blackberries, blueberries, strawberries, pineapples, mandarin oranges, lemons, or slightly underripe, firm bananas.

 

 

3. Vegetables with fructans and galactans

 

Bloating can occur even with the consumption of vegetables, particularly those that contain high amounts of fructans and galactans. These carbohydrates are broken down by gut bacteria, which can lead to gassiness. Vegetables more likely to cause bloating include: asparagus, zucchini, onions, shallots, leeks, artichokes, beets, Brussels sprouts, savoy cabbage, fennel, and snow peas.

 

Instead, opt for less sugary options like carrots, eggplant, avocados, green beans, bean sprouts, celery, cauliflower, and lettuce to minimize bloating.

 

 

4. Milk and other dairy products

 

As we age, lactose intolerance becomes increasingly prevalent, affecting approximately 68% of the population.

 

To ease bloating from lactose intolerance, you can swap dairy products like milk or ice cream for lactose-free alternatives. The good news is, you don’t have to completely give up all your favorite dairy items.

 

Unsweetened yogurt is generally well-tolerated by most individuals since the majority of lactose is broken down during the fermentation process. Additionally, hard or aged cheeses such as parmesan, brie, mozzarella, Swiss, and goat cheese are more likely to be tolerated compared to soft cheeses.

 

 

 

5. Beans

 

Lentils, peas, and many beans contain raffinose, a sugar your body struggles to digest. Additionally, beans are very high in fiber, which can increase gassiness when eaten in large amounts.

 

Among the various types of beans, black beans, navy beans, kidney beans, pinto beans, and soybeans are more likely to cause gas. It is advisable to opt for alternatives like green beans, black-eyed peas, and mung beans instead.

 

 

6. Sugar substitutes

 

To prevent gas and bloating, it’s best to avoid sugar alcohols like sorbitol, mannitol, xylitol, and erythritol, as our bodies struggle to break them down, causing digestive discomfort. For a healthier alternative less likely to cause issues, consider using stevia or monk fruit extract instead.

 

 

7. Grains

 

Individuals with gluten intolerance may experience bloating when consuming foods that contain gluten. If you fall into this category, it is advisable to steer clear of wheat, barley, and rye.

 

Instead, opt for foods that are easier on the digestive system, such as rice, quinoa, oats, and other gluten-free products.

 

 

8. Some fermented foods

 

Consuming fermented foods can promote a healthy gut microbiome, but it’s worth noting that certain types may cause temporary bloating and gas. To ensure a more comfortable stomach, I suggest moderating your consumption of kimchi, kombucha, and sauerkraut.