Passing gas is completely normal – in fact, most people do it between 5 and 15 times a day. The amount and smell depend largely on what you eat.
Here are the most common foods that can cause gas in your digestive system and, in some cases, a less-than-pleasant odor.
High-fat foods
Fat slows down digestion, which can cause food to ferment in the intestines and produce foul-smelling gases.
Fatty meats also contain sulfur-rich amino acids that can lead to a rotten egg smell.
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Legumes
Beans, lentils, and other legumes are packed with fiber and the sugar raffinose, which the body struggles to break down.
In the gut, bacteria transform these into gases like hydrogen, methane, and sulfur compounds.
Eggs
Although eggs don’t cause problems for everyone, they contain sulfur compounds that can intensify odor – especially when eaten with other gas-producing foods like beans or fatty meats.
Onions
Onions, garlic, spring onions, and artichokes contain fructans, a type of carbohydrate that can create gas and bloating.
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Dairy products
Milk, cheese, and other dairy products contain lactose.
Around two-thirds of the world’s adult population has some degree of lactose intolerance, which can lead to bloating and gas.
Wheat and whole grains
Bread, pasta, and oats can be rich in fructans and fiber, both of which promote gas formation.
Some grains also contain gluten, which may cause discomfort in people with gluten intolerance.
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Broccoli, cauliflower, and cabbage
These fiber-rich vegetables provide excellent fuel for gut bacteria, which in turn produce gas. Their sulfur content can also contribute to a stronger odor.
Fruits high in fructose
Apples, mangoes, and pears are naturally high in fruit sugars and fiber. For some people, fructose can be hard to digest, leading to gas build-up.
Carbonated drinks
Soda and other fizzy drinks introduce extra air into your stomach, which must leave the body either through burping or farting.
Rapid increase in fiber intake
If you suddenly boost your fiber intake, you may experience bloating.
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The best approach is to increase fiber gradually and drink plenty of water to minimize discomfort.
This article is based on information from BBC.com/thai.
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