That tight, stuffed, extended feeling in your lower abdomen that makes it feel like you've swallowed a balloon? That’s bloating, and it has likely happened to all of us at some point in time since one study found that 19 percent of people say they've experienced bloating on a regular basis.

But what causes bloating and how can we eat to alleviate it or avoid it altogether? There are foods that help fight bloat and others that contribute to it. Here's what science tells us about bloating and its relationship to diet.

Technically bloating happens when air or gas gets into our gastrointestinal tract (the entirety of our digestive system from our mouth all the way down to our rectum), and it can create a feeling of fullness that is uncomfortable and may actually cause our stomach to expand.

While some of us may be more prone to bloating than others, there is a reason behind it and useful tips to get rid of it, beyond just pulling on our stretchy pants and waiting it out.

What Causes Bloating?

One of the main causes of bloating is an accumulation of gas, typically after we eat. This gas occurs due to several reasons, including eating too fast and swallowing air.

According to the International Foundation for Gastrointestinal Disorders, swallowed air can occur for many reasons including:

  • Postnasal drip
  • Smoking
  • Eating too quickly
  • Chewing gum or sucking on hard candy
  • Dentures that don’t fit properly
Swallowing air can lead to bloating since it can get trapped inside the digestive system, so if you feel the need to burb after eating, you may want to slow down your "inhaling" food habit. Slowing down is also smart since it gives the body the chance to register that it is full and you will like eat less, or the right amount, and keep from overeating in one sitting.
Another way air gets into the body is through carbonated drinks so if you're experiencing bloating, drink flat or still water.

Foods that Cause Gas

Some foods cause you to experience bloating or gas more than others. Most of the time it’s carbohydrate-rich foods since protein and fat are less gas-forming. Even complex carbohydrates –– which are generally healthy –– can cause bloat in some people. First of all, they are harder for your body to break down due to the type of sugars and other compounds they contain. And in some cases, you may have a sensitivity to one or more of these starches that naturally occur in whole foods. These include:

  • Raffinose, lactose, fructose, and sorbitol (all naturally occurring sugars)
  • Starches (except rice)
  • Fiber, which is actually healthy and should not be avoided

The reason behind these gas-forming compounds is that we are either lacking the enzyme to break them down or in the case of insoluble fibers, we can’t break them down at all.

For example, lactose (found in dairy products) requires an enzyme called lactase to fully digest. Individuals who are lactose intolerant don’t create enough of this enzyme, leading to gastrointestinal discomfort whenever they eat foods that contain lactose, such as milk, cheese, ice cream, or foods that contain dairy.

In another example, high-fiber foods such as celery or cruciferous vegetables go through our digestive system intact, which is normal, and healthy, but in the gut, our bacteria try to break it down, which leads to it fermenting and forming gas – since our body's healthy gut bacteria like to feed on this type of fiber.

Foods that Cause Bloating

The following foods are the most likely to cause gas according to the International Foundation for Gastrointestinal Disorders.

  • Beans (including chickpeas and all legumes)
  • Certain Veggies that include artichokes, asparagus, broccoli, cabbage, Brussels sprouts, cauliflower, and onion
  • Fruits such as apples, pears, peaches, bananas, prune, and apricots
  • Whole grains and bran
  • Carbonated beverages
  • Milk and dairy products
  • Foods that contain sorbitol (a type of sugar alcohol)

How to Stop Bloating

Completely avoiding all gas-forming foods is not the way to go, since these foods also contain important nutrients including vitamins, minerals, and phytochemicals that are beneficial for immunity, gut health, and disease prevention. Instead, it's best to pinpoint a specific food (or group) that may be causing your bloat, and eliminate those items one at a time to see if it helps.

Other Causes of Bloating

According to John Hopkins Medicine, you could have a condition that makes you more susceptible to bloating, and if your bloating is frequent, painful, or disruptive to your everyday activities you'll want to see a doctor who can figure out if you might have Irritable Bowel Syndrome or a food allergy or auto-immune condition. Bloating is also caused by:

  • Constipation
  • Gluten intolerance or Celiac Disease
  • Gastroparesis (delayed emptying of the stomach)
  • Small intestinal bacterial overgrowth (SIBO)

Bloating and the Low-FODMAP Diet

You don’t have to learn to live with constant bloating, but it will take some effort on your end to prevent it. According to the International Foundation for Gastrointestinal Disorders, bloating can be prevented by changing your diet and following a Low FODMAP Diet

When it comes to diet change, one good way to pinpoint what foods are making you bloat is to try the FODMAP diet. FODMAP stands for Fermentable Oligosaccharides, Disaccharides, Monosaccharides, and Polyols. John Hopkins Medicine states that these are all short-chain sugars that our small intestine often can’t absorb properly, leading to digestive distress such as gas and bloating.

FODMAPs can ferment inside your gut, and draw water into your digestive tract, causing bloating. Not everyone is sensitive to FODMAPs, but if you experience constant bloating, it could be a sign to avoid high-FODMAP foods.

3 Steps to Fight Bloating

  1. Stop eating high-FODMAP foods for approximately 2 to 6 weeks
  2. Slowly reintroduce them one by one, to see which bothers you the most
  3. Avoid the foods that you are sensitive to. Once you figure out which foods are problematic, you can avoid them

Avoid These High-FODMAP Foods

  • Honey
  • Milk or other dairy products
  • Garlic
  • Onions
  • Cauliflower
  • Mushrooms
  • Artichokes
  • Avocados
  • Apricots and other pitted fruits
  • Apples
  • Wheat
  • Cashews
  • Pistachios
  • Beans
  • Dried fruits

Foods That Reduce Bloating

To improve or get rid of bloating, eat a low FODMAP diet of:

  • Almond milk
  • Whole Grains such as rice, quinoa, and oats
  • Certain Vegetables
  • Citrus Fruits: oranges, kiwis, pineapple
  • Bananas
  • Blueberries
  • Carrots
  • Cucumbers
  • Grapes
  • Bell peppers
  • Potatoes
  • Tomatoes
  • Spinach
  • Eggplant
  • Zucchini

You’re bloating could also be coming from the fact that you went from eating a low-fiber diet to adding too many high-fiber foods all at once. Such as when you swear off your usual junk food habit and start eating salads and grain bowls all of a sudden.

While fiber is a beneficial nutrient, it should be gradually increased in your diet, so that your gut microbiome can shift over to produce more healthy bacteria to help break down the fiber. Once you can comfortably tolerate  25 grams of fiber per day –the recommended amount for women –– or the 38 grams per day –– recommended for men – you'll feel better and less hungry, and be healthier and have more energy all day long.

In order to limit the amount of air you swallow, make sure that you’re eating your meals slowly and avoid gulping down food, chewing gum, or making a habit of sucking on hard candies.

When Bloating Indicates Something More Serious

Don’t take bloating with a grain of salt. Sometimes it can indicate a serious underlying health problem. According to GI Associates & Endoscopy Center, you should go see your doctor ASAP if you have any of the following symptoms, along with persistent bloating:

  • Bloody stools or vaginal bleeding: This could indicate ovarian cancer. Rush University states that persistent bloating and a “full” feeling are some of the early signs of ovarian cancer that go undetected because women don't know what to look for.
  • Diverticulitis: This is when pouches in the lining of your intestines become infected or inflamed. This can lead to bloating, abdominal pain, and fever. You'll need to get antibiotics as soon as possible to keep the infection from spreading so call your doc.
  • Ascites: This is when fluid builds up in the abdomen. Typically, this indicates liver disease, but if bloating is paired with jaundice (yellowing of the skin) it could also indicate liver cancer. If you ever have yellowing of the skin call your doctor.
  • Fever: whenever you’re dealing with a fever, especially when it includes other symptoms such as bloating, it usually means there is inflammation or an infection happening somewhere in the body. Your doctor will need to take your blood to help her pinpoint exactly what may be going on.

Bottom Line: Treat Bloating By Eating a Low-FODMAP Diet

In order to prevent bloating, you will likely need to adjust your diet, cut out dairy and try going on the low-FODMAP diet. Then, add back in fiber foods one at a time to see if a specific food is causing bloating. If you incorporate these tips to prevent bloating, and it still persists or gets worse, make an appointment to see your doctor.

The 13 Best Foods to Boost Your Immune System to Fight Off COVID-19 Symptoms

Here are the best foods to eat on repeat, to boost immunity and fight inflammation. And stay off the red meat.

1. Citrus for Your Cells and Healing

Your body does not produce vitamin C, which means you need to get it daily to have enough to create healthy collagen (the building blocks for your skin and healing).The recommended daily amount to shoot for is 65 to 90 milligrams a day, which is the equivalent of one small glass of orange juice or eating a whole grapefruit. Almost all citrus fruits are high in vitamin C. With such a variety to choose from, it's easy to get your fill.

2. Red Peppers to Pump Up Skin and Boost Immunity with Twice the Amount of Vitamin C as an Orange Has

Want even more vitamin C, add red bell peppers to your salad or pasta sauce. One medium-sized red bell pepper contains 152 milligrams of vitamin C, or enough to fulfill your RDA. Peppers are also a great source of beta carotene, a precursor of vitamin A (retinol). How much beta carotene do you need a day: You should try to get 75 to 180 micrograms a day which is the equivalent of one medium bell pepper a day. But a red pepper has more than two and a half times your RDA for vitamin C so eat them all winter long.

3. Broccoli, But Eat It Nearly Raw, to get the Most Nutrients Out of It!

Broccoli may be the most super of superfoods on the planet. It's rich in vitamins A and C as well as E. The phytochemicals in it are great for arming and strengthening your immune system.How much lutein should you eat in a day: There is no RDA for lutein, but experts say get at least 6 milligrams.

4. Garlic, Eaten By the Clove

Garlic isn't just a great flavor-enhancer, it's essential for your health. Garlic’s immune-boosting properties are tied to its sulfur-containing compounds, such as allicin. Allicin is thought to improve your immune cells' ability to fight off colds and flu, and viruses of all kinds. (Smelling more garlic on the subway? It could be smart coronavirus management.) Garlic also has anti-microbial and anti-viral properties thought to fight off infections. How much should you eat in a day: The optimal amount of garlic to eat is more than most of us can fathom: Two to three cloves a day. While that may not be doable, realistically, some people take garlic supplements to get 300-mg dried garlic in a powdered tablet.

5. Ginger is a Power Player for Immunity and Digestion

Ginger is another ingredient that has super properties when it comes to fighting off illness. It has been shown to decrease inflammation, which can help if you get swollen glands or a sore throat or any inflammatory ailment. Gingerol, the main bioactive compound in ginger, is a relative of capsaicin, and is responsible for much of its medicinal properties. It has powerful anti-inflammatory and antioxidant benefits.How much should you eat a day: Most recommendations land on 3–4 grams of ginger extract a day, or up to four cups of ginger tea, but no more than 1 gram a day if you are pregnant. Some studies have linked high dosages to an increased risk of miscarriage.

6. Spinach, Wilted, Not Steamed (Also Kale and Dark Leafy Greens of All Kinds)

Spinach is not only packed with vitamin C but also antioxidants and beta carotene, both of which give your immune system the healthy boost it needs to fight off invaders. Don't overcook your spinach, since the more it's cooked the less active the antioxidants will be. If you eat it raw or lightly steamed you'll keep more of the nutrients intact.How much should you eat a day: Aim for 1 cup fresh spinach or 1/2 cup cooked per day, but this is the right moment to try the raw or slightly wilted approach. Order warm or wilted spinach salad when you go out, or make it yourself with olive oil, pine nuts, and vegan parm.

7. Almonds for the Win, Pop Them Like Candy

Vitamin E in almonds will help ward off colds and flu and is key to your immune system humming along. It’s a fat-soluble molecule, meaning it requires the presence of fat to be absorbed, so nuts are the perfect package for E to make it into your system.How much should you eat in a day: A half-cup serving, or 46 whole, shelled almonds, provides almost 100 percent of your RDA of vitamin E. Almonds are great for you but they don't come with a "free" pass, since 1/4 cup is a serving and has 162 calories, so double that for your RDA and you're eating about 325 calories. Throw them into smoothies instead.

8. Turmeric to Fight Inflammation, Put it In Your Tea or Smoothie

This highly pigmented spice is known for its anti-inflammatory qualities. How it helps immunity? It decreases exercise-induced muscle damage. Tumeric bolsters the immune system by stimulating antibody formation and people with auto-immune diseases are told by their doctors to take 500 mg of curcumin daily to reduce inflammation and stave off soreness.How much should you eat in a day: Try adding extra Tumeric to your diet during periods of stress or during flu season. Or take 500-2,000 mg of curcumin to help fight inflammation and power up your immune system.

9. Green Tea by the Gallon, Skip the Coffee and Sip this Instead

Green tea has high levels of EGCG, (epigallocatechin gallate) a hard-working antioxidant that is known to boost immune function. Green tea is steamed so the EGCG is still active when you drink it.Green tea also contains L-theanine, an anti-oxidant which appears to help in the production of T-cells in your body, the killer  L-theanine may aid in the production of germ-fighting compounds in your T-cells.How much green tea should you drink in a day: The optimal amount is three to five cups in a day, but most people won't get to that level. Any amount is better than nothing. Swap out a usual beverage daily for green tea could improve your health.

10. Papaya, The Tropical Healer to Keep You Vacation-Healthy All Year Round

Papaya delivers over twice your recommended daily amount of vitamin C in one fruit. It also contains an enzyme called papain that has anti-inflammatory effects -- and inflammation is one factor in most illnesses, so avoiding it can help your body fight off bacterial infections like sinusitis.Papayas contain potassium, vitamin B, and folate, which is a powerful cell rebuilder. Exactly how folic acid works to build immunity is linked to its role in protein synthesis, and researchers think that any mechanism in which cells proliferate can be affected (which is why it's critical for pregnant women). People who are folate-deficient have compromised immune systems.How much folate should you eat a day: Whether you are pregnant or not, folate (vitamin B9) is a great vitamin to keep your cells healthy and strong. The recommendation is 400 micrograms a day, or get it from legumes, spinach, papayas, and avocados.

11. Kiwis, a Vitamin Powerhouse

Kiwis are full of folate, vitamin K, vitamin C, and potassium. These vitamins in combination work in the body to build healthy cells, fight infection and keep your immune system humming along. Vitamin K deficiency is rare but when people don't have enough they suffer from weak bones and compromised immune systems. The inflammation system in the body is also dependent on vitamin K, especially your killer T cells that mobilize and fight cancer and other diseases.How much should you eat in a day: Vitamin K is one of the unsung heroes of the body. Women should get 90 micrograms a day, and men should have 120 micrograms.

12. Sunflower seeds to sprinkle on salads or eat by themselves

Sunflower seeds are especially healthy since they provide phosphorus, magnesium and vitamin B-6 as well as vitamin E. Your immune system needs vitamin E to function at full throttle. You can also get vitamin E from avocados and spinach and broccoli.How much should you eat in a day: Anywhere from 1 ounce (30 grams) per day to a healthy handful is considered healthy, but because they are high in sodium you might want to refrain from eating the entire bag. The raw seeds have 204 calories per quarter cup.

13. Miso, Soup or Paste to Add to Your Soups and Salad Dressings

The nutrients in miso -- which is a soybean paste that has been fermented with salt and a koji starter -- boosts immune system function by delivering healthy probiotics to the gut, making your microbiome healthier. How does Miso benefit your immune system?  It is a "sirt" food, which are foods that contain high levels of ‘sirtuins’ or proteins that regulate cells and activate metabolism. A diet high in sirts is believed to lead to weight loss, increased wellness and longevity.How much should you eat in a day? Researchers believe that consuming one bowl of miso soup per day, as is the tradition in Japan, lowers the risks of breast cancer. Other than its high sodium content there is no reason to stay away from miso with all its varied health benefits. We say cheers to that.