What's the harm of growing a beard?

Some foreign scientific research institutions and scientists use physical and chemical methods to analyze the air inhaled by bearded people. It is found that the air filtered by beard contains more than a dozen substances harmful to human health, including phenol, benzene, toluene, ammonia, hydrogen sulfide and acetone. In the air, the pollution unit of harmful substance content is called "limit allowable concentration". People with ordinary beards inhale air, and the pollution unit is 4.2 limit allowable concentration, and the clean air is much lower than this concentration. For a bearded person, the pollution unit when inhaling air is as high as 7.2 limit allowable concentration. The air pollution of people who both have beards and like smoking is even more alarming: when people with ordinary beards inhale air, the pollution unit reaches the limit allowable concentration of 24.7; The air pollution unit of people with beards is as high as 49.3 limit allowable concentration. This is because smoke almost releases more than 200 kinds of harmful substances when burning. In addition to polluting the inhaled air, a long beard will also bring inconvenience to the diet, and often make soup or rice grains pollute the beard. Therefore, from the perspective of human health care, it is better not to grow a beard. Some men like to grow beards to show their masculinity, while others are too busy with work and study to shave. However, medical research has found that growing a beard is harmful to human health. Some scientists from the Institute of Public Health of the former Soviet Medical College tested the air inhaled by people with beards and compared it with people without beards. The results show that people with beards inhale much more harmful substances than people without beards. They found dozens of harmful substances from the air inhaled by bearded people, such as phenol, benzene, toluene, ammonia, hydrogen sulfide and acetone. Most of these harmful substances are exhaled by people with beards and then absorbed by beards. When people breathe, these toxic substances will enter the human body with the inhaled air, which is harmful to health. It can be seen that we should not only see the beauty brought by growing a beard, but also pay attention to health problems. You may get septicemia if you pull out your beard! There are hair follicles, sebaceous glands and other skin accessory structures under the beard. It is easy to damage these skin, hair follicles or sebaceous glands when pulling out the beard. At this time, the bacteria attached to the hands or face will take advantage of it, causing folliculitis and sebaceous glands, and even swelling of the lips and face. There are abundant vascular networks around the nose and lips, which communicate with intracranial blood vessels, so this part is called "danger triangle". If the beard is pulled out at will, bacterial infection of skin, hair follicles and sebaceous glands around the nose and lips can easily spread to the cavernous sinus in the cranial cavity, which may lead to meningitis or septicemia. The beard won't get thicker and thicker. According to a new study published in Scientific American, there is no evidence that hair is getting thicker and thicker. The coarser the body hair is shaved, the more likely it is just an illusion of the eyes. Shaving has no practical effect on the texture or growth rate of body hair. This is because the ends of human hair are like pencil heads or javelin heads, so the shaving blades only scrape off the exposed parts, leaving stubble thicker and darker than before shaving. Short hair sticks directly to the hair follicle and looks thicker, but shaving a part of it usually does not change the regeneration process of the remaining hair.