Also called "shit" and "poop", or in most local dialects. For farmers, manure can be used as organic fertilizer for better crops. "Shit stinks" is a deep-rooted concept for thousands of years, but scientific analysis shows that shit should not stink. Healthy stools have no obvious stench, but the stools of constipation patients or friends who like to eat meat have a foul smell, which is the smell emitted by harmful bacteria in the intestine after decomposing food. In addition, constipation patients will produce a large number of toxins harmful to human body because of the abnormal fermentation of feces in the intestine for too long. Therefore, when people have health problems such as hemorrhoids, facial pigmentation, anorectal diseases, it is usually caused by constipation.
The main components of fecal odor are indole, fecal odor, hydrogen sulfide, amine, acetic acid and butyric acid. Indole and fecal odor are the root causes of malodor, which is the substance formed by the decomposition of protein by bad bacteria in the intestine. In other words, if you eat a lot of high protein, your stool will become smelly. Moreover, these things are toxic to the human body, and people with normal intestines, such as babies, do not have them in their feces. The feces discharged by the baby before weaning period are clean and not smelly at all. After weaning, with the gradual increase of food intake, stool becomes as smelly as adults. The reason is that babies can keep their intestines very clean and active by eating breast milk. After they began to eat, they absorbed a lot of high-fat and high-protein foods, destroyed the intestinal environment, gradually produced corrupt substances, and gradually formed stools, which led to the stench of stools.