How did the fart get out?

Hehe, when it comes to "fart", everyone is familiar with it. No matter whether it's dark or loud, it's smelly or tasteless, everyone releases at least about 5 ml of gas every day. However, farting is a very embarrassing thing, and people are always reluctant to put it on the table and rarely pay attention to it. But fart is a daily physiological phenomenon, which is an indicator of normal gastrointestinal peristalsis function. Once fart changes, it usually means some balance changes in the body and even pathological changes. Therefore, fart is a mirror of people's health, but don't treat this "fart" as a "fart".

let's talk about how fart is formed first.

The raw material of fart is the air swallowed with our saliva or food. Some of them are discharged from the stomach by burping, and the rest of the air enters the intestine and becomes the main source of fart. Therefore, people who are used to swallowing a lot of air with saliva fart more often than the average person. In severe cases, sometimes more than half of the stomach will be filled with air. Another source of fart is that the food people eat is fermented, decomposed and corrupted by intestinal flora, so some gas will be produced. Once these gases accumulate more, they will stimulate intestinal peristalsis. Driven by the peristaltic wave, these gases are discharged from the anus and become fart.

Wu Ming, a gastroenterologist at Taiwan Province Wanfang Hospital, said that there are four causes of fart, one is eating too much air, and the other is that carbohydrates in food are fermented by bacteria to produce gas. These two reasons are easy to "fart rumbling", that is, the number of farts increases; Protein in food is fermented by bacteria to produce gas, which is easy to "stink"; If the intestinal peristalsis is too fast, it is easy to fart more, and it is a "chain fart", which is put one after another.

so, what are the ingredients in fart?

as we know, the main components of air are nitrogen and oxygen. When the air in the stomach enters the intestine, the oxygen inside will be absorbed, and the remaining nitrogen will become one of the main components of fart intact. Scientific research has come to the conclusion that there are 4 ingredients in fart. Surprisingly, it is NASA that does this research!

NASA's Apollo program actually studies fart? It's incredible. But in fact, this is a very important issue for the internal management of spacecraft. If a person's fart contains flammable gas, it may be ignited in some cases if it is not properly treated in space, which may cause an explosion or fire in the spacecraft. In addition, the spacecraft is a sealed space that cannot easily adjust the air, so it is necessary to consider that astronauts may be poisoned by their own farts.

After careful study, NASA found that fart contains 4 components. The main components are odorless gases such as nitrogen, hydrogen, carbon dioxide, methane and oxygen, and trace amounts of odorous gases such as ammonia, hydrogen sulfide, indole, fecal odor, volatile ammonia and volatile fatty acids. Except nitrogen and oxygen, most gases are made in enteric bacteria.

the proportion of components in fart varies from person to person. For example, people with low nitrogen content account for only 23%, while people with high nitrogen content account for 8%.

It's interesting that the gas produced in enteric bacteria can be discharged from other places besides fart. Do you know this?

In some cases, especially if the opposite sex you like is around, you dare not let it out, even though you have fart, so you don't want to let it out again. Most people have this experience. However, the fart that I wanted to fart did not disappear somewhere. Where did this fart go? It came out of the mouth with the exhaled air.

Of course, fart doesn't come out of your mouth intact. If it does, it will not only "pollute" people around you, but also make you feel unbearable.

If you hold back your fart, gas will accumulate in the intestine, but this gas can be exchanged with the gas in the blood of intestinal mucosa. Therefore, when the gas concentration in the intestine is high, the gas will flow into the blood, be transported to the lungs by the blood, and be discharged out of the body together with the exhaled gas. This is the cause of bad breath.

But bad breath rarely stinks to the point of fart. Where are the other odors?

There is no doubt that ammonia, hydrogen sulfide, indole, fecal odor, volatile ammonia, volatile fatty acids and other gases that form odor are mostly absorbed by the body.

as you can imagine, what terrible effects these substances will have on the body after being absorbed! As early as the 11th century, doctors came to the conclusion: "People who persist in farting are in danger of edema, spasm, dizziness and painful hernia. Most of the time, these sad symptoms are just a matter of thought. " So, as long as the "conditions" allow, please fart boldly! As Cicero, an ancient Roman philosopher, said, "We should fart boldly, just like burping boldly.