What are the hazards of nicotine to human body

Nicotine is what we often hear about. It is a biological alkali present in tobacco. Frequent smoking will lead to the ingestion of a lot of nicotine. We often say that smoking is harmful to health, mainly because nicotine is harmful to our health. Many friends are concerned about the harm of nicotine to the human body. Below we will introduce you to the detailed knowledge about nicotine, hoping it will be helpful to everyone.

Nicotine, commonly known as nicotine, is a bioalkaloid found in Solanaceae plants (Solanum genus). It is also an important component of tobacco and a representative of N-cholesterol receptor agonists. It has effects on N1 and N2 receptors and the central nervous system, but has no clinical application value.

The nicotine in one cigarette can kill a mouse, and the nicotine in 20 cigarettes can kill a cow. If a person inhales a large amount of nicotine at one time (50 to 70 mg, equivalent to the nicotine content of 40 to 60 cigarettes), it may cause death. If the nicotine from a cigar or three cigarettes is injected into a person's vein, death can occur within 3 to 5 minutes. Tobacco is harmful not only to higher animals but also to lower animals, and is therefore also a major ingredient in agricultural pesticides. Hence the saying goes: "Poisonous snakes don't bite smokers." Because when they smell the bitter odor of smoking, they fly away. By the same token, passive smokers also feel uncomfortable with the smell of smoke.

Deaths from acute poisoning caused by smoking have already occurred in China. Smoking too much will make you fall to the ground like a drunk, vomit yellow water from the mouth and die. For this reason, Emperor Chongzhen issued an order to ban smoking. There were also reports from abroad: A young man in the Soviet Union died after smoking a large cigar for the first time. A 40-year-old healthy British man who had been smoking for a long time smoked 14 cigars and 40 cigarettes in one night because he was engaged in a very important job. He felt uncomfortable in the morning and died after the doctor's rescue failed. A smoking competition was held in a club in France. The winner died before he could receive his prize after smoking 60 cigarettes. The other contestants were rushed to the hospital for emergency treatment because they were in critical condition.

There are many people who smoke more than a pack of cigarettes (20 cigarettes) a day. Some people smoke a large amount but are not poisoned. The nicotine content in their cigarettes far exceeds the lethal dose for humans, but there are very few people who die from acute poisoning. The reason is that part of the nicotine in the tobacco is neutralized by the poison formaldehyde in the smoke. Moreover, most people do not smoke continuously, and the nicotine enters the human body intermittently and slowly. In addition, after a cigarette is lit, 50% of the nicotine diffuses into the air with the smoke, 5% is thrown away with the cigarette butt, 25% is destroyed by burning, and only 20% is absorbed by the body. Nicotine is quickly detoxified in the body and excreted in the urine. In addition, long-term smokers develop tolerance and addiction to nicotine in their bodies, making them addicted to smoking.

The above is a detailed introduction about the harm of nicotine to the human body. It can be seen that nicotine is still very harmful to the human body. If you are a frequent smoker, you must find a way to quit smoking or reduce the amount of smoking, because smoking not only causes harm to the smoker's body, but also affects the people around him.