Does smoking affect intelligence?

Smoking is extremely harmful to the body and has no benefits. Smoking significantly increases the incidence of lung diseases. During the smoking process, harmful gases such as carbon monoxide, irritating smoke and nicotine are inhaled into the lungs in large quantities, causing damage to the alveoli, bronchi, etc., and in severe cases can lead to lung cancer. Of course, smoking also causes certain damage to people's intelligence. Here is a brief introduction to the dangers of smoking.

Smoking has a history of several hundred years since Columbus discovered the New World. The harm of smoking not only endangers human health, but also has a negative impact on society. Tobacco leaves contain the toxic substance nicotine, also known as nicotine. 1 gram of nicotine can kill 300 rabbits or 500 mice. If 50 mg of nicotine is injected into a person, it will be fatal. Smoking is the most harmful to the respiratory tract and can easily cause laryngitis, tracheitis, emphysema and other coughing diseases. When smoking, smoke enters the mouth, passes through the throat, trachea, bronchi, and enters the blood. Smoking can cause men to lose their Y chromosomes, increasing their risk of cancer.

Smoking affects people's concentration. Some people believe that smoking can refresh people, eliminate fatigue and trigger inspiration, which is unscientific. Experiments have shown that smoking seriously affects people's intelligence and memory, thereby reducing work and study efficiency. Psychologists also used the academic performance of 200 college students as experimental indicators and found that the grades of students who smoked were an average of 7 points lower than those of non-smoking students. Why does this happen? Because nicotine in cigarettes enters the body and stimulates the autonomic nervous system, causing vascular spasms, affecting the neural activity of the cerebral cortex, and causing a person's intelligence to decline.

Some people may not know that smoking can cause osteoporosis. Some men smoke and lose their sexual ability prematurely, and the incidence of osteoporosis increases significantly with age. If pregnant women smoke, it can cause the fetus to lose weight, and smokers are more likely to have bad breath. About 50 percent of people in my country are exposed to secondhand smoke, so smoking is not only harmful to smokers themselves, but also to non-smokers.