Farting is a normal thing. Farts are produced in three ways: when swallowing food, air enters the digestive tract; food in the intestine is fermented by bacteria to produce gas; and gas in the blood seeps into the intestine. Some studies show that a person farts about 14 times a day. What is the composition of farts? Is it combustible gas? A video once appeared on the Internet of someone setting a fart on fire. So what is the composition of a fart? Farts contain hydrogen, methane, carbon dioxide, nitrogen and oxygen. Oxygen and nitrogen come from the air that is swallowed with food when you swallow. Hydrogen, methane and carbon dioxide, on the other hand, are produced because of intestinal bacteria when they break down proteins. So these gases contained in farts can really ignite? Farts are actually a very dangerous gas, and sometimes the hydrogen contained in farts can be as high as 47%, in which case fireworks are strictly prohibited. However, generally speaking, few people will be able to ignite the fart, so do not worry too much about the buttocks will “open”. Why do farts stink? In fact, 99% of the components of farts are odorless, but why do people fart badly? There are two kinds of smelly farts, one is loose stools, the release of the fart feces stink is very strong, if the stool is discharged, the fart will be discontinued. From this point of view, “farts are the head of the shit” is justified. The second is that the fart smell is particularly strong, as smelly as rotten eggs. This is due to eating too much protein-based food, so that the intestinal tract of food retention. Stagnant protein food in the digestive tract is decomposed, the production of amines, amines have this bad smell. The solution is to reduce the amount of food you eat, especially the amount of protein-containing food. What is the cause of excessive farts? Is it a disease? The causes of excessive farting can be grouped into two main categories. The first is that the food you eat is not easy to digest, such as some starchy and bean-based foods. The second is because of intestinal diseases. Due to problems with the digestion and absorption function of the small intestine, or taking some drugs that inhibit the absorption of sugar in the small intestine, such as Bystolic (sugar-lowering drugs). If it is due to diet, it is recommended to reduce starchy foods and increase protein and vegetable foods to achieve a balanced diet.