Why does flying upset my stomach?

“Changes in cabin pressure and oxygen saturation, along with the vibration and motion of the plane, can inhibit gastric emptying,” Allen says. In other words, digested food can't move to the small intestine, making it more difficult to do a number two. This can contribute to feeling bloated, gassy and nauseated.



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A lack of oxygen or the proverbial thin air, as is common at high altitudes or during flights, can trigger inflammation in the intestinal tract in people with a corresponding predisposition.

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Keep Drinking Water. Drinking water might be the last you want to do because you feel full and bloated, but it's one of the best things you can do to relieve the effects of bloating. Packing The Travel Water Bottle for your trip can help so that you always have water on hand even though your travels might get hectic.

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It's possible that traveler's diarrhea may stem from the stress of traveling or a change in diet. But usually infectious agents — such as bacteria, viruses or parasites — are to blame. You typically develop traveler's diarrhea after ingesting food or water contaminated with organisms from feces.

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The increase in symptoms, Bedford says, is not typically caused by the flight itself but by the anxiety of flying. Flight anxiety and underlying stress from delays or unexpected changes to travel plans may cause many people's IBS to flare up, he says.

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Five tips to reduce your risk for traveler's diarrhea
  1. Stick to only factory-sealed drinks or boiled water. ...
  2. Avoid raw vegetables and fruits. ...
  3. Eat thoroughly cooked meats and fish. ...
  4. Wash your hands thoroughly with soap and clean water. ...
  5. Don't make major food changes.


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There is no vaccine against traveler's diarrhea. Your doctor may recommend medicines to help lower your chances of getting sick. Taking 2 tablets of Pepto-Bismol 4 times a day before you travel and while you are traveling can help prevent diarrhea.

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You may feel discomfort and notice minor swelling in your abdomen area as well. Luckily jet belly shouldn't last more than one week after you land and can be relieved using different techniques and by taking natural supplements.

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It's really down to physics. Pressurised cabins on aeroplanes are having an effect on the air inside you, so as the cabin pressure decreases, the air inside the bowel expands by up to 30% more than usual, and that needs to get out.

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When you're stressed, neurotransmitters (chemical messengers) travel along this pathway to your gut, where they regulate the movement of water and electrolytes4. The diarrhea symptoms that you experience during stressful situations may be part of your body's fight-or-flight reaction5.

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During travel, people tend to have higher stress levels and changes in their daily patterns. They may also eat different foods than usual. Any one or a combination of these factors could trigger an IBS flare in some individuals.

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Traveling by plane can be difficult for those who suffer from bowel symptoms. Ask to sit as close to the restroom as possible. Also, sit on an aisle for easy and fast access so you will not have to ask others to move. When planning your trip, consider driving if possible.

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Whole grains: Foods like millet, whole wheat and quinoa provide sustained energy and are less likely to cause bloating compared to refined grains. Nuts and seeds: Snacking on a small portion of nuts or seeds can provide a healthy dose of protein and healthy fats, helping you stay satisfied during the flight.

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Pressure changes can disrupt the gases in the digestive system and cause them to expand, leading to discomfort, bloating, and sometimes nausea. There's also the fact that when you're traveling via plane, car, or train, your usual diet has to change.

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On the morning of your flight, take a cup of hot water and some lemon and squeeze it in, she said. Celery, though not everyone's cup of tea, is the key ingredient. I know it looks so gross, celery, but believe me it is the best thing. I always mix it up with some cucumber and some lemon.

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