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When smoking a cigarette, there are more than 6000 kinds of chemical substances, which enter the oral, nasal mucosa and respiratory tract through the oral cavity, and then reach the lungs through the nasopharynx, trachea, and bronchi, and the toxic substances absorbed through the mucosal tissue will enter the human circulatory system. The damage to various organs is described below by the order in which the smoke contacts the human body and is absorbed after the cigarette is burned.
When the smoke touches the skin
The temperature of the burning cigarette will affect the skin around the nose and lips, making it not only dull, but also prone to wrinkles and age spots; the tar produced will deepen the color of the lips.
When smoke comes into contact with the mouth
The enamel of the teeth can be covered with tar, which can discolor the teeth. Some chemicals will attach to the tongue and the lining of the mouth, numb the taste buds and prevent the secretion of saliva, and even destroy the microflora in the mouth, resulting in bad breath and so on. Such toxic and carcinogenic substances can also cause genetic mutations that increase the risk of oral cancer, throat cancer and esophageal cancer.
When smoke comes into contact with the respiratory tract
Chemical substances such as acetaldehyde and acrolein in the smoke will slow down or even destroy the ciliary operation of the nasal mucosa, thereby causing rhinitis or sinusitis, and affecting the olfactory system. The mucous membranes of the respiratory tract are also inflamed and damaged, increasing the chance of chronic obstructive pulmonary disease, while toxic and carcinogenic substances can also cause genetic mutations and increase the chance of lung cancer.
When smoke touches the nervous system
The nicotine in smoke will affect the operation of the nervous system, leading to rapid heartbeat, vasoconstriction, etc., increasing the risk of hypertension and vascular embolism; at the same time, cholesterol and fibrinogen are increased in the blood, which can easily cause blood clots to block blood vessels, and then Cause myocardial infarction or stroke; inhaling too much carbon monoxide will reduce the oxygen-carrying capacity of the blood, so that the heart needs more energy to provide enough oxygen to the body, which is more likely to cause heart disease, peripheral vascular disease and peripheral vascular disease.
When smoke enters the human circulatory system
The toxic substances in the smoke will enter the circulatory system through the absorption of the aforementioned mucosal tissues, and enter the digestive tract and various parts of the body, which will lead to a decrease in immune function and increase the inflammatory response of various organs. Such repeated inflammation will lead to gene mutation, and then mutation becomes cancer cell. This is also the main reason why smoking cigarettes leads to various malignant tumors such as liver cancer and kidney cancer.
Smoking a cigarette is so harmful to the human body that you should really think twice before lighting it!