It is a well-known fact that smoking is harmful to health. However, with the wide variety of cigarette brands on the market, many smokers may not be aware of the hidden risks when making a choice. Recently, four types of cigarettes have been included in the "blacklist" and have become the focus of public attention. This article will analyze the composition of cigarettes, the dangers and how to choose relatively safe cigarettes, hoping to help the majority of smokers recognize the true face of cigarettes and make a more informed choice.1. Ingredients of cigarettesCigarette smoke contains more than 4,000 chemicals, many of which are fossil fuels, such as nitrosamines, paraffins, etc. Most of the compounds in cigarette smoke are very stable, so they all have high boiling points. Many of these are toxic compounds that can cause cancer from cigarettes, such as fossil fuels. Many of these compounds are obtained from cigarettes, such as fossil fuels, and these compounds regenerate very slowly. Fossil fuels are mostly obtained from the earth's crust, such as coal, oil, and natural gas. Humans mainly use these fossil fuels to obtain raw materials for energy and chemical production. Ores are formed by the mineralization process of the earth's crust, which is caused by magmatic activity, erosion, and plate tectonics.
2. The dangers of cigarettes
Carcinogenic: 92% of cigarette smoke is gas, such as carbon monoxide, hydrocyanic acid and ammonia; 8% is particulate matter, which is collectively referred to as tar, which contains nicotine, polycyclic aromatic hydroxyx, benzopyrene and -naphthylamine, etc., and has been confirmed to be more than 40 carcinogens. The harm of smoking to the human body is a slow process that takes a long time to show, and nicotine has an addictive effect that makes it difficult for smokers to recognize. Smoking can induce a variety of cancers, cardiovascular and cerebrovascular diseases, respiratory and digestive tract diseases, etc., and is one of the biggest causes of premature death and disability. A 40-year study in the United Kingdom proved that middle-aged smokers had three times the mortality rate compared to non-smokers. According to WHO data, 3 million people die from smoking-related diseases every year in the world, and it is estimated that it will rise to 10 million by 2025, and China will account for 2 million. Smoking has become an urgent problem that seriously endangers the health of our people.
Impact on cardiovascular and cerebrovascular diseases: Smoking is an important cause of cardiovascular and cerebrovascular diseases such as hypertension and coronary heart disease, and statistics show that 75% of patients with coronary heart disease and hypertension have a history of smoking. Nicotine and carbon monoxide in smoke are recognized as the main detrimental factors of coronary atherosclerosis, but the exact mechanism is not fully understood. Most scholars believe that changes in blood lipids, platelet function, and blood rheology play an important role. High-density lipoprotein cholesterol (HDL-C) stimulates the production of prostacyclin (PGI2) in vascular endothelial cells, which is the most potent substance for vasodilation and inhibition of platelet aggregation. Smoking can damage vascular endothelial cells, and cause a decrease in serum HDL-C, an increase in cholesterol, and a decrease in PGI2 levels, thereby causing peripheral vascular and coronary artery constriction, thickening of the tube wall, narrowing of the lumen, and slowing of blood flow, resulting in myocardial hypoxia. Nicotine in turn promotes platelet aggregation. The carbon monoxide in the smoke combines with hemoglobin to form carboxyhemoglobin, which affects the oxygen-carrying capacity of red blood cells, causing tissue hypoxia, thereby inducing coronary artery spasm. Due to the lack of oxygen in the tissues, compensatory polycythemia is caused, which increases blood viscosity.
3. How to choose relatively safe cigarettes
After learning about the dangers of cigarettes, we knew that the best option was to quit. However, for some old smokers who are unable to quit smoking temporarily, how to choose relatively safe cigarettes is particularly important. Here are some suggestions:
Avoid buying four cigarettes on the "blacklist": These four cigarettes are on the "blacklist" for a variety of reasons and may pose a greater health risk. Therefore, smokers should try to avoid choosing these four when buying cigarettes.
Choose low-tar, low-nicotine cigarettes: Tar and nicotine are the main harmful substances in cigarettes, and choosing low-tar, low-nicotine cigarettes can reduce the health hazards of smoking.
Pay attention to the filter of cigarettes: The filter can filter out some harmful substances, so it is relatively safer to choose a cigarette with a filter.
Gradually reduce the amount of cigarettes smoked: Tapering off smoking is a viable option for smokers who are unable to quit smoking right away. By reducing the amount of cigarette smoking, the accumulation of harmful substances in the body can be reduced, thereby reducing the harm to health.
In conclusion, smoking is bad for your health, and quitting smoking is the best option. For smokers who are temporarily unable to quit smoking, choosing relatively safe cigarettes can reduce the health hazards of smoking. However, this does not mean that these cigarettes are safe, and they can still cause health damage. Therefore, smokers should quit smoking as early as possible to protect their health.
The above is an analysis of the four "blacklisted" cigarettes and how to choose relatively safe cigarettes. It is hoped that the majority of smokers can recognize the dangers of cigarettes and make wise choices to protect their health.