Why do people sneeze?

Sneezing is a natural phenomenon. Ancient science was backward, and people didn't know why they sneezed, so there were all kinds of interesting sayings about sneezing: people once thought that sneezing was dangerous because the soul would escape from the body when sneezing, and a prayer of "God bless" would stop the soul in the body. Zulu people in southern Africa have the opposite attitude towards sneezing. They are not afraid of sneezing at all, and think it is a sign of friendly gods' blessing. As soon as the child sneezes, they shout "long", hoping that the friendly God can make the child grow tall and strong. The ancient Hebrews also believed that sneezing was good, because it was like a sign of life, and the dead could not sneeze. Japanese believe that if you sneeze once, it means that someone is saying good things about you, if you sneeze twice, someone is saying bad things about you, and if you sneeze three times, you have a cold. There is also a popular saying in our country that sneezing is because someone is thinking about you or talking about you.

In fact, people sneeze because there are many sensitive nerve cells on the nasal mucosa in the nasal cavity. When the nasal mucosa is stimulated, such as flying insects flying into the nasal cavity, the spicy taste of pepper and dust flying into the nose, it will sneeze reflexively. Sneezing has a protective effect on human body. It can discharge foreign bodies or excessive secretions in the upper respiratory tract in time, ensure the smooth respiratory tract and avoid the body from being hurt by irritants. When people suffer from respiratory diseases, such as colds, they sneeze because the nasal mucosa is stimulated first.

There is an interesting record about sneezing in medical history. An American female student sneezed every four minutes from1October 4th to June 7th, except sleeping 1966 65438+. Because of continuous sneezing, she has severe pain in her head and chest, difficulty in breathing and eating, frequent cramps, vomiting, general fatigue and inconvenient life, which is really difficult for ordinary people to understand. As a result, experts from all directions came to seek medical treatment in succession, but to no avail. On June 7th, she was taken to the Veterans Hospital in Miami. Dr. Gushuna adopted a therapy for her, that is, two electrodes and other devices were installed on her two forearms, so that every time she sneezed, she was immediately shocked, sneezed and then shocked. After nearly four hours, the sneezing finally stopped. When people asked Dr. Gushuna the secret of his treatment, he said that he used "reward and punishment therapy". He thinks that the girl student started sneezing for a certain reason, but she has developed this inevitable abnormal habit, because her sneezing can win the sympathy of many people, and this sympathy actually becomes her sneezing reward. However, the application of electroshock therapy to her was punished, so she never sneezed again.