What are the hazards of tar in cigarettes?

Tar will cover your lungs, and smoking for a long time, covering faster than your metabolism, will cause lung cancer.

So it's better to smoke less.

The tar in cigarettes is the main substance that endangers human health and causes human cancer.

The carcinogens and carcinogens of smoke tar are polycyclic aromatic hydrocarbons (PAHs) and porphyry, which can be deposited in the lungs and may become carcinogenic after years of accumulation. The smoke produced by cigarette ignition, especially the tar it contains, is a carcinogen – that is, it can cause cancer in the tissues it touches, so it can develop cancer anywhere in the smoker's airway, including the mouth and throat.

1.to the teeth. Damage to the oral mucosa, causing the formation of smoke spots in the lungs.

2.The concentration of carbon monoxide is increased by 3 to 5 times, and the dust particles produced become the first to spread diseases by the bacteria that are prone to it.

3.It is difficult to eliminate after inhalation, accumulating in the kidneys, liver, lungs, etc"Bone pain"and other symptoms.

4.It can cause vasospasm, vascular endothelial cell damage, and make ** dry.

5.Poisoning of the optic nerve and loss of vision.

Cigarette tar refers to a layer of brown greasy matter accumulated in the cigarette holder used by smokers, commonly known as cigarette oil. It is the product of incomplete combustion of organic matter under anoxic conditions. It is an extremely complex mixture of many hydrocarbons and hydrocarbon oxides, sulfides and nitrides, including benzopyrene, cadmium, arsenic, amines, nitrosamines and radioactive isotopes, etc., a variety of carcinogens and phenols, fumaric acid and other carcinogenic substances The characteristics of the action of carcinogenic substances, although the amount is very small, but it has a regular, repeated and long-term accumulation effect.

Ingredients: Tobacco itself contains only trace amounts of polycyclic aromatic hydrocarbons, while the vast majority of the polycyclic aromatic hydrocarbons in tar are produced during smoking. Its generation, enrichment, value-added and the local ignition temperature of the cigarette is closely related, when smoking, the local temperature of the paper cigarette can reach 600-900, at the time of smoking, the temperature of the red part can reach 980-1050, and in the interval between two smoking, the temperature drops by about 100-150.

In the process of smoking, except for the outer part of the cigarette, it is basically burned under the condition of insufficient oxygen supply, which not only produces a large amount of carbon monoxide, but also increases the types of polycyclic aromatic hydrocarbons generated with the increase of coking temperature, such as benzene, di, pyrene, phenol and other carcinogens, which are mostly generated at 700-900, while carcinogenic substances such as phenol and fumaric acid are generated at a low temperature of 500-700. Therefore, the content of polycyclic aromatic hydrocarbons in tobacco tar is much higher than that of tobacco itself, both in variety and quantity.

Amount of cigarette generated: The cigarette tar generated during smoking is about 1 6 of the weight of the original tobacco, and the yield of cigarette tar has a certain relationship with the frequency of smoking. The more times you smoke per unit of time, the more tar is generated.

3 puffs of cigarettes per minute produce almost 1 times more tar than 1 puff of cigarettes per minute. The amount of tar produced is also related to the length of the cigarette, which is conceivable, because the smoke tar smoke generated at the place where the tobacco is ignited is adsorbed by the tobacco when it passes through the unburned part of the cigarette. As the ignition gets closer to the end, almost most of the tar produced enters the smoker's respiratory tract, and the ratio of the amount of tar produced by the first half of a cigarette to the second half of a cigarette is about 1, and the amount of tar produced by cigars, pipe cigarettes and hookahs is less than that of paper cigarettes.

The amount of smoke tar produced during smoking enters the smoker's respiratory tract with the smoke flow, and the amount absorbed by the respiratory tract is closely related to smoking habits. In a single deep smoking (inhalation), about 90% or more of the aerosol particles are carried to the lungs; For example, during 5 seconds of breath-holding after smoking, 82% of the particles can be trapped in the lungs; Hold your breath for 30 seconds, and the retention rate can be as high as 93%.

Hazards: According to scientific analysis, cigarette smoke contains more than 30 kinds of direct carcinogenic chemicals, of which the content of coal tar is the highest, and each cigarette contains about 25mg (labeled content: medium).

Coal tar is produced after the incomplete combustion of sugars in tobacco leaves, which is both a cause of cancer and a carrier of other compounds. These compounds include triphenylpropion, carbon monoxide, various aromatic compounds, and of course, nicotine, which everyone knows.

Hello, what does tar look like for cigarettes? After magnifying 400 times with a microscope, I saw clearly.

The higher the amount of tar, the better it is to smoke, and the worse it is for the body.

The 10 cigarettes with the lowest tar content are: Yellow Crane Tower, Changbai Mountain, Yellow Crane Tower (Happy Encounter), Yellow Crane Tower, Nanjing, Changbai Mountain, Guiyan, Jiaozi, Diamond and Cordyceps sinensis.

1. Yellow Crane Tower (Sibo).

Also known as hard Sibo, it is a cigarette under the Yellow Crane Tower brand, the tar content is as low as milligrams, the cigarette belongs to the flue-cured tobacco type cigarette, the carbon monoxide amount is, the cigarette is 84mm long, the color of the packaging box is white, and the domestic cigarette is sold domestically.

2. Changbai Mountain (alpine flowing water).

It is a flue-cured tobacco type low-hazard, low-tar cigarette product, with a tar content of 1mg, a smoke nicotine content, a carbon monoxide content of 3mg, a cigarette length of 84mm, a filter length of 30mm, and a carbide color in the packaging box.

3. Yellow Crane Tower (Happy Encounter: Golden Rose).

It is a flue-cured cigarette with a red background and gold thread on a red background, and a golden rose pattern with a strong sense of three-dimensionality in the garden circle. The amount of tar, nicotine and carbon monoxide of the cigarette is 28mg, and the cigarette length is 84mm, which is a domestic cigarette.

4. Yellow Crane Tower (for whom: big color green).

It is a flue-cured cigarette under the Yellow Crane Tower brand, with a tar content of 3mg, a smoke nicotine content, and a carbon monoxide content of 3mg, and the packaging color is green, which is a domestic tobacco.

5. Nanjing (Mengdu Zunxi).

It is a niche thin mixed cigarette with a tar amount of 3mg, which is suitable for people who like light. The amount of carbon monoxide in the cigarette is 2mg, the amount of nicotine in the smoke is 97mm, and the filter is 25mm long.