Why is secondhand smoke worse than firsthand smoke?

The person who smoked the first cigarette was also inhaling second-hand smoke of your own making. Long-term exposure to people who smoke first-hand cigarettes has the same incidence of lung diseases, and there are also high-risk factors for lung cancer and cardiovascular and cerebrovascular hazards. Secondhand smoke is more dangerous than firsthand smoke.

It is true that secondhand smoke is much more harmful than firsthand smoke because when smokers inhale cigarettes, less than 10% of the harmful substances produced by cigarettes are inhaled into the smoker's lungs. The rest of the smoke is released into the air.

At this time, in the smoke formed by second-hand smoke, the surrounding non-smokers inhale relatively more harmful substances, and the harm is naturally greater. In addition, secondhand smoke lasts longer than firsthand smoke. Because the smoke of first-hand smoke may last for 5-10 minutes, while the smoke of second-hand smoke spreading in the air may last for half an hour, or even an hour, and it cannot be dispersed after a long time.

If someone close to you is exposed to secondhand smoke, the damage will last longer. What remains in the air is expelled by the smoker's lungs, and these things are more likely to enter other people's lungs.

Secondhand smoke contains many harmful substances and carcinogens, and long-term exposure to smoke can cause lung cancer, coronary heart disease and other diseases. Secondhand smoke is very harmful to pregnant women and children. It can lead to respiratory infections, bronchial asthma, and reduced lung function in children.

It can also cause preterm birth in pregnant women and neural tube malformations in newborns. Smoking will cause serious harm to human health. Smoking control and quitting smoking are the best ways to prevent it.

Therefore, for the sake of personal health, smokers should quit smoking, and non-smokers should refuse secondhand smoke.

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Because the smoke inhaled by smokers contains less than 10% of harmful substances, other harmful substances will be emitted into the air with the smoke. There are also smokers who smoke for only a few minutes, while the smoke that fills the air lasts for more than half an hour. Moreover, smokers smoke all year round, and the body has adapted to it, while many people who smoke second-hand smoke will feel uncomfortable in their bodies if they do not smoke.

We all know that smoking is bad and harmful to human health. But in fact, this harm is very chronic. Some people smoke all their lives.

It seems that the body is still very healthy, and some people can get lung cancer if they don't smoke. I think it has a lot to do with the genes of the individual. Of course, we still have to believe that science says that smoking less and not smoking is very good for your health.

It is said that scientific studies have shown that second-hand smoke is more harmful to the human body, even more powerful than first-hand smoke. Because the content of harmful substances in secondhand smoke is higher than that of first-hand smoke. But I think there's a bit of a pseudoscience to that statement.

How can it be? Secondhand smoke is more harmful than firsthand smoke. Although passive smoking is harmful, it may cause lung cancer, coronary heart disease, respiratory system diseases and so on.

But obviously, first-hand cigarettes are more harmful. Second-hand smoke has already drifted away, in the air, the concentration has been thinned, a lot, even if the harm to people if inhaled, it is limited. We often see reports that claim to be findings, but do not give any specific results.

That's why I collectively call these pseudosciences for science's sake. It's all some data made up from **. We know that smoking affects blood lipid concentrations, causing blood lipids to thicken, blood circulation to slow down, and affecting the blood supply and oxygen supply to the heart muscle.

This in turn leads to coronary heart disease. There is a respiratory system that will be raised. The possibility of cancer.

Smoking can also cause fetal malformations, so pregnant women should stay away from secondhand smoke. Reducing or not smoking is the most important way to prevent and control secondhand smoke, but it is affected by many objective factors and cannot be achieved on special occasions. Then you must keep the indoor air fresh, you can choose to buy some air purification products, a variety of green plants, which is very good for purifying the air.

Second-hand smoke is divided into mainstream smoke and side-stream smoke, among which second-hand smoke with side-stream smoke is more harmful, as follows:

1. Mainstream cigarettes: that is, take a cigarette and take a puff hard, the smoke inhaled is the mainstream smoke, and the mainstream smoke is filtered through the lungs and then exhaled, that is, the mainstream smoke exhaled. When smoking mainstream cigarettes, a large amount of air passes through the filter of the smoke and enters the burning cigarette butt, and there is no lack of oxygen at this time.

Therefore, the nitric oxide content in mainstream tobacco is low, and when it is not completely burned, the benzopyrene and other carcinogens formed are relatively small, so the harm of mainstream tobacco is relatively low. However, when these harmful substances are spit out, a large number of pollutants can be formed;

2. Side-flow smoke: refers to when you don't smoke, you take the cigarette and burn it, and the smoke that comes out is the side-stream smoke. Side-stream smoke does not have a large amount of air passing through the burning butt, and there is more anaerobic combustion at this time.

That is, carbon monoxide, a small amount of carbon dioxide, benzopyrene, tar and other combustibles in the smoke are 5-10 times or higher than mainstream smoke, so the harm caused is higher. Therefore, people who sit next to them and smoke laterally are more harmful, such as children who smoke second-hand smoke, which is easy to cause bronchitis, asthma and other diseases. Women who regularly inhale secondhand smoke are susceptible to nasopharyngeal cancer, lung cancer, esophageal cancer, stomach cancer, breast cancer, and other cancers.

Therefore, frequent second-hand smoke is more harmful. Because smoking smoke contains a lot of carcinogens and inflammatory substances. The most important carcinogens are pollutants such as tar, benzopyrene, and nicotine, which play a major role in the formation of tumors in the human body.

First-hand smoke refers to the smoke produced by direct inhalation of the combustion of tobacco products, while second-hand smoke refers to the passive inhalation of smoke from the smoking of others. Although both contain harmful substances, secondhand smoke is more harmful to the body.

The smoke from secondhand smoke contains a variety of carcinogens and harmful chemicals, such as benzene, formaldehyde, cyanide, heavy metals, and radiation, and long-term exposure to these substances increases the risk of various health problems, including cardiovascular disease, lung cancer, and childhood asthma. In addition, exposure of pregnant women to secondhand smoke can also lead to problems such as fetal malformations and low birth weight.

In contrast, first-hand smoke is also very harmful to the body, but because smokers can control the amount and frequency of inhalation, it may not be as harmful as secondhand smoke. Therefore, for Jane's own health and the health of others, we should avoid as much as possible exposure to smoke from the combustion of tobacco products, including first-hand smoke and second-hand smoke.

There is a big misunderstanding in the understanding of some smokers, they think that second-hand smoke should be defined as the smoke that comes out of the cigarette when it burns itself (i.e., shunted smoke), and the smoke that is filtered by the smoker's lungs (i.e., mainstream smoke) is certainly not so toxic, so second-hand smoke is certainly not as harmful as smoking "first-hand". In fact, their mistake is that they do not understand the definition of second-hand smoke, nor do they know the composition and harm of second-hand smoke, and they will know a lot after reading the following.

As we all know, in daily life, due to differences in culture, living habits and environmental awareness, it is impossible for the vast majority of people to completely avoid exposure to cigarette smoke, so second-hand smoke is very common.

How secondhand smoke can harm the human body.

According to research, cigarette smoke after burning contains more than 4,000 harmful substances, which can be divided into four main categories from a medical point of view:

1. Carbon monoxide, the concentration in cigarette smoke is about 4/10,000, and the binding force with red blood cells is about 210 times that of oxygen and red blood cells, so after carbon monoxide is inhaled into the human body, the ability of red blood cells to transport oxygen will be reduced, and the body will be deprived of oxygen.

Hello, secondhand smoke can have a lot of bad effects on the body. First of all, secondhand smoke contains a large number of harmful substances, such as nicotine, carbon dioxide, carbon monoxide, benzene, toluene, styrene, etc., which can cause serious damage to the human respiratory system, such as increasing the incidence of bronchitis, chronic obstructive pulmonary disease, lung cancer and other diseases. Secondly, the nicotine in secondhand smoke can cause damage to the body's cardiovascular system, such as aggravating the incidence of heart disease, high blood pressure, coronary heart disease and other diseases.

In addition, nicotine in secondhand smoke can also affect the body's immune system, which can increase the risk of infectious diseases. In conclusion, regular exposure to secondhand smoke can cause serious harm to the body, and it is recommended that you avoid exposure to secondhand smoke as much as possible to protect your health.

There are several reasons why secondhand smoke is more harmful than firsthand smoke:

Some harmful substances in secondhand smoke are found in higher amounts than in firsthand smoke. For example, carbon monoxide, secondhand smoke is five times more than firsthand smoke, tar and nicotine are three times, ammonia is 46 times, and nitrosamines, a strong carcinogen, are 50 times.

In the case of insufficient combustion, the harmful components produced per unit mass of secondhand smoke will be more toxic than first-hand smoke.

Second-hand smoke spreads in the air, which lasts longer, even an hour, and cannot be dispersed for a longer time.

Therefore, second-hand smoke is more harmful than first-hand liquid tobacco, which has become an unprecedented public health provocation. To prevent the harm of secondhand smoke, in addition to general nasal lavage, exercise and other conventional means, you can use some special traditional Chinese medicine and health care products to help clear the lungs and detoxify.