According to statistics, a healthy person has to fart an average of 14 farts a day, and the total gas production can reach 1.7 liters. If you find that you fart too much or too little for a long time, it means that there may be problems with your health.
fart is not a gas, but a mixture of multiple gases. Its main components are nitrogen , hydrogen , carbon dioxide , methane , oxygen and an extremely small amount of other gases. You may say that these gases do not smell bad, so why are they so smelly?
In fact, the source of the odor of farts is mainly in the extremely small amount of other gases, accounting for less than 1% of the total farts. This little component contains ammonia, sulfide, indole and stool.
Why can such a little odorous substance make the fart smell so smelly? That's because most odorous substances are poisonous, and our human olfactory system is very sensitive to the smell of toxic substances. As long as people smell a little of this kind of odor, they will immediately avoid it. This is the human body's self-protection mechanism, , is working.
For example, methane will inhibit intestinal peristalsis and cause constipation, while hydrogen sulfide will inhibit muscle contraction and damage the intestinal wall, which may be related to inflammatory bowel disease and colon cancer .
These odors are very toxic, can corrode the intestinal wall and cause "gut leakage". They can also poison cells, cause gene mutations, and increase the risk of cancer. Increased intestinal permeability makes it easier for toxic substances to enter the human body and the blood system, and ultimately, it will endanger the health of the whole body.
So the question is, where does the fart come from? Why do some people say that loud farts don’t smell bad, and stinky farts don’t sound bad? Let's talk about this interesting topic.
Where does the fart come from?
I believe most people can guess that the formation of farts is closely related to intestinal microorganisms. Intestinal microorganisms will produce gas during their life, just as animals exhales carbon dioxide during their life activities, and plants release oxygen during their life activities.
However, the difference is that there are many types of microorganisms . In addition to carbon dioxide and oxygen, the gases produced will also produce hydrogen, methane, sulfides and ammonia.
In addition to the microbial life activities themselves, the chemical reactions generated by the mixing of various substances in the intestines will also release gas. For example, the hydrochloric acid in gastric acid and the bicarbonate in pancreatic juice will react as soon as it meets in the duodenum to produce carbon dioxide.
In fact, the chemical reaction between microorganisms and intestines is just one of the sources of farts , and the source of another fart is probably not something that many people can imagine. Because the second source of farts is the air entering from a person's mouth.
Not only that, the proportion of gas produced by intestinal microorganisms is not high. The main source of gas in farts is the air we swallow into our stomach when we eat and speak, and this can account for 70% of the total farts, which is also the reason why nitrogen accounts for the highest proportion of farts.
When people put food into their mouths, they will inevitably swallow some air, and during the process of chewing and stirring food, a lot of air will enter the mouth and be swallowed into their stomachs along with the food.
After the air enters the stomach, some of it will be wrapped in gastric juice to form bubbles. These bubbles are lighter and will slowly gather in the upper part of the stomach. When a certain amount is accumulated, pressure will be generated, and the stomach will stimulate the stomach will contract together, the throat and mouth will open at the same time, and the person will burp.
So some of the air eaten is discharged from the upper respiratory tract in the form of " hiccup ". The gases that cannot move upward will go down along with the food, mix with the gas generated by the microbial activity, reach a certain amount and form a pressure, and then be discharged from the bottom in the form of farts.
Everyone's farts are different
From the above content, we can know that the farts that everyone in the farts are actually different, because the foods people eat, the intestinal microbial flora are also different, and whether the body is healthy will also affect the proportion of the farts, thereby giving out different smells of farts.
Some people fart very smelly, which may be related to their recent diet. For example, people who eat too much meat and eat too much protein , the body will digest it slowly and the intestinal peristalsis will be slower. Then the bacteria will ferment food for a longer time, producing more hydrogen sulfide and ammonia, which will make the farts smell more smelly.
But if you eat more foods containing oligosaccharide , such as soybeans, peas, soybeans, etc., these foods will produce more gas after digestion, and the amount of fart will be more.
In addition to beans, some foods rich in cellulose , such as sweet potatoes, pumpkin, radish, onions, ginger, cabbage, etc., have special smells and spicy foods, which are also prone to produce more gases and make people fart more.
Another situation is that you keep farting after drinking milk, which may be lactose intolerance. It is said that 93% of yellow people no longer secrete lactase after adulthood. After drinking milk, lactose cannot be absorbed and can only go to large intestine for microorganisms there to use, which will make people produce gas.
In addition, eating too much food at a time will also affect the amount of farting people. For example, when eating a big meal, you will consume a lot of foods with high protein and fat content. Eating too much of these meat and fried foods will bring great burden to the stomach and intestines.
Even after a long period of digestion and decomposition, there are still many foods that have not yet been decomposed after passing through the small intestine. This will give bacteria in the large intestine a chance. After they are digested and decomposed, the gas produced will make you smell bad and smellier than usual farts.
Incredibly, in addition to farting, some people can also emit fragrant farts. Scientists have found that some people can detect fragrance substances in their farts, such as α-pinene and β-pinene, limonene , etc.
There are also some substances, such as dimethyl sulfide, which is a common edible spice. When the concentration is relatively high, such as more than 30 ppb, it smells like the fishy smell of rotten kelp, and when the concentration is relatively low, it smells like the smell. The same is true for
Fetiostein . Indole concentration has a strong feces odor, and when the concentration is low, it has a fragrance and can be used as a fragrance. However, the possibility of smelling smell is relatively low, but it is not ruled out that some people just smell it.
Because each person feels the smell of receptor is different, and the same smell is smelly, while some people can't stand it. For some, the androstone in male sweat smells like flowers or vanilla, but for others, it smells like sweat or urine, which is bad, and others can’t smell it at all.
In short, the farts of different individuals vary in their odor and main components, which is related to the composition of human intestinal microorganisms and personal eating habits.
No fart smells, no fart sounds?
When I was a child, my elders always used "far loudly but not smelly" to relieve the embarrassment. I believe that many friends have heard adults say "far loudly but not smelly, but not smelly but not sound" since childhood, and this is true in most cases.
So is there any scientific basis for this? The answer is yes. There is really a certain scientific basis for the loud farts to smell, and the stinky farts to sound.
In fact, the fart smell emitted by healthy people is relatively fresh, and the displacement is relatively large, and the sound is crisper. Because 99% of the farts that healthy people say are harmless substances and have no odor, and less than 1% of the ingredients contain odor substances. Therefore, the diluted farts don't smell that bad.
But if a person develops gastrointestinal diseases, such as indigestion, gastrointestinal bleeding, long-term constipation, ulcerative colitis, etc., then there are more toxic substances produced in the gastrointestinal tract, and these toxic substances are the main source of odor.
Our human body has a set of self-protection mechanism and will try every means to excrete toxic substances from the body as soon as possible. Therefore, after people with gastrointestinal diseases develop farts in their stomachs, their bodies will expel them as soon as possible. At this time, the odorous component in the farts exceeds 1%, and the total amount of farts is not that much, so the farts emitted are more smelly, but there is no sound.
So there is scientific basis for saying that loud farts are not smelly, and stinky farts are not sounding. If a person gives smelly and stuffy farts for a long time, then his body may have gastrointestinal problems.
How to control farts?
Don’t ignore the embarrassing problem of “farting”, because farts are closely related to our diet and intestinal microorganisms. From the size, number of farts and smell, you can judge whether a person’s body is healthy.
In fact, if a person's fart smell is beyond the point that ordinary people can't bear, and it is much different from the usual fart smell, then he is likely to have real health problems.
For example, when some people have a sour, fishy smell or other special odor, it is very likely that they will suffer from gastrointestinal diseases.
Of course, if you don’t want to fart or stinky farts in public and avoid embarrassment, you must start from your living habits and daily diet.
When eating, chew as carefully as possible and swallow slowly. Don’t say while eating, as this can reduce air intake. Control the amount of diet and avoid eating too much at one time. This can reduce the burden on the gastrointestinal tract and avoid too many farts and odors.
In terms of food selection, try to avoid foods that are prone to stinky farts and more farts, such as eating less meat, beans, etc., and eating less foods that are too greasy should be eaten. In short, eat a light diet. Of course, maintaining a happy mood can also affect the smell and displacement of farts!
What else do you want to add to? #Telebrity Creation Challenge# 1
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