The farts in human body are mainly produced by the gas swallowed when eating, the gas swallowed when talking, and the decomposition of food.
1. Gas swallowed while eating: When eating, a lot of gas is swallowed along with the food, and the gas enters the small intestine and large intestine through the stomach to form farts, which are discharged out of the body by the anus.
2. Gas swallowed while talking: a large amount of gas will be swallowed while talking and enter the digestive tract through the esophagus, forming part of the fart.
3. Food decomposition: after eating, a large amount of food enters into the gastrointestinal tract, which is digested by various digestive enzymes such as pancreatic enzyme, protease, amylase, etc., resulting in a large amount of gas produced from the food, which forms a fart to be discharged; and a large amount of food enters into the large intestine, if it cannot be discharged in time, it will also produce a fart under fermentation and decomposition of probiotic bacteria.