Smoking makes me dizzy, what's going on? How harmful is nicotine
People who have not smoked for the first time or for a long time may experience dizziness if they smoke a lot. Cigarettes contain nicotine, N-nitrosamines and other toxic substances. When smoking, these volatile substances are inhaled into the lungs through the nasopharynx, and then It is absorbed into the blood through capillaries and enters the brain through the blood-brain barrier, resulting in cerebral vasospasm and symptoms of central nervous system toxicity.
At the same time, because the smoke contains a large amount of carbon monoxide, hemoglobin will preferentially combine with carbon monoxide, resulting in insufficient oxygen supply for human metabolism, resulting in short-term hypoxia. After smoking, vasoconstriction can also cause brain insufficiency, which can aggravate hypoxia and eventually cause dizziness.
Cigarettes are a kind of tobacco products. There are more than 3,800 known chemical substances in the smoke released from tobacco combustion, most of which are harmful to human body, including carbon monoxide, nicotine and other alkaloid amines, nitriles, alcohols, phenols, Alkanes, aldehydes, nitrogen oxides, polycyclic aromatic hydrocarbons, heterocyclic compounds, hydroxyl compounds, etc., heavy metal elements, organic pesticides, etc. have a wide range of biological functions, causing various harm to the human body.
We all know that smoking is not good for health, and nicotine is more harmful. Everyone knows something. I will explain it to you in detail. The content of nicotine in cigarettes varies with the quality of tobacco leaves and processing technology. Generally speaking, each A cigarette contains 1.5-3 mg of nicotine. When smoking, about 25% of the nicotine is burned and destroyed, 5% of the residual cigarette butts, 50% of the nicotine diffuses into the space, and only 20% of the nicotine is really absorbed by the human body, so some people smoke a pack of cigarettes a day without poisoning. . Nicotine irritation and damage to many organs in the body increases with nicotine levels.
The specific injuries are as follows:
Nicotine can cause stomach pain and other stomach diseases. Nicotine can stimulate the gastric mucosa, causing submucosal vasoconstriction and spasm, leading to ischemia and hypoxia in the gastric mucosa, thereby destroying the gastric mucosa.
Nicotine can affect lipid metabolism in the blood, leading to vascular sclerosis, obstruction, atherosclerosis, and increased risk of coronary heart disease, myocardial infarction, and stroke.
Nicotine is a neurotoxin that invades the nervous system. Smokers will feel that smoking can relieve fatigue and invigorate the spirit. However, the excitement is temporary, and the nervous system will be inhibited after being excited. After smoking, the sensitivity and accuracy of neuromuscular responses Sex will be reduced.
Nicotine will affect the capillaries of the respiratory tract and the nerve tissue of the respiratory tract for a long time, resulting in a significant increase in the incidence of diseases such as bronchitis. .