Every day, about 7~ 10 liter of gas enters the intestine, but most of it is absorbed by the blood vessels in the intestinal wall, and about 0.5 liter is discharged from the intestine.
Fart is the waste gas discharged by the body, mostly carbon dioxide, hydrogen and methane.
Fart is produced because some foods we eat are not decomposed. The undecomposed parts, including fiber and sugar, become food for Escherichia coli. Escherichia coli is discharged after a full meal, and these gases accumulate in the body, causing air pressure. Too much pressure will be pushed out of the body, forming a fart.
The amount of fart is related to people's diet. Some people like to eat onions, ginger, raw garlic, potatoes, sweets, beans and pasta. Because these foods contain substrates that can produce a lot of hydrogen, carbon dioxide, hydrogen sulfide and other gases, the exhaust gas often increases greatly after eating, and fart constantly.
The amount of fart is also related to the strength of human digestive function. When indigestion occurs, intestinal bacteria ferment rapidly, which is easy to produce gas and make people fart. Investigation shows that a person farts about 14 times a day. Every day, everyone releases about 500 ml of waste gas.
Although fart stinks, fart is a normal physiological need and is beneficial to people's health. It is unhealthy for a person not to fart all day. People who don't fart all the year round are most likely to have gastrointestinal problems.
A high-protein diet will produce a lot of hydrogen sulfide (the smell of rotten eggs) when it rots, so it has a special smell. Generally, the more fragrant you eat (meat, fried food), the more smelly you fart. If you don't eat well (coarse rice, light rice), the smell will be less. Some people eat too much sweet potatoes, although they will fart, but the taste will not be too bad, because sugar fermentation mainly produces carbon dioxide gas. If you fart too much, and it often smells bad, it means that protein has eaten too much and has a heavy burden on his stomach, so he should immediately reduce the amount or change to a vegetarian diet to prevent gastrointestinal diseases.
Flatulence is generally a certain amount of gas in the intestine. Sometimes it secretly "blows in the wind" from the bottom of the intestine, which is also called "fart" or rises to the stomach to suffocate. A surprising research data: the number of times a healthy person with a normal diet exhausts from the rectum is 10- 18 times a day! And people who exhaust too much: 140 times a day!
Causes of intestinal gas: 1) Swallowing air In most cases, the reason for excessive intestinal gas is that you swallow a lot of air or the bacteria in the intestine produce too much gas. As far as the former is concerned, everyone will swallow some air when eating, but nervous people will gulp in air. However, when people are calm or relaxed, they may inhale too much air. For example, if false teeth are not properly worn, saliva will secrete more air, so the air will be swallowed with saliva. When they feel sick, they often swallow saliva, which will make a lot of air enter their stomachs. In addition, drinking drinks through straws, chewing gum, sucking candy, smoking, drinking carbonated drinks to quench thirst, or taking baking soda to treat indigestion will also increase the gas content in the intestine.
2) Food causes excessive intestinal gas. If it is not caused by swallowing air, it is probably because Chinese cabbage, cauliflower, baked beans (the more you eat, the louder your fart), peas, Brussels sprouts, peaches, apples, melons, onions and other foods are fermented after being treated by normal bacteria in the intestine. In addition, excessive intestinal gas may also be due to a sudden increase in a large number of insoluble fibers such as wheat bran in the diet. If the absorption of wheat bran is not gradually increased, the intestinal tract will react badly and form a lot of gas.
3) Intestinal disorders, the most important of which are intestinal allergy or spasm [see "intestinal allergy syndrome"], gallbladder disease [possibly indigestion caused by eating fat], and insufficient lactose absorption capacity in the body.