Lead: Many people only heard the most "passive smoking", not knowing that he had been subjected to third-hand smoke damage. "Third-hand smoke." This concept is Harvard Cancer Center, presented in 2009, referring to the smokers smoke for some time off after the smoke in indoor building materials surface and dust residues of toxic substances, including nicotine derivatives, heavy metals, carcinogens, radioactive materials and the like. Simply put, third-hand smoke refers to smoke left in the surface of the object space harmful chemicals.
Many people only heard the most "passive smoking", not knowing that he had been subjected to third-hand smoke damage. "Third-hand smoke." This concept is Harvard Cancer Center, presented in 2009, referring to the smokers smoke for some time off after the smoke in indoor building materials surface and dust residues of toxic substances, including nicotine derivatives, heavy metals, carcinogens, radioactive materials and the like. Simply put, third-hand smoke refers to smoke left in the surface of the object space harmful chemicals.
The following are the Hong Kong Committee on Smoking and Health's official website:
1. "third-hand smoke" refers to smoking after remaining in the clothes, walls, furniture, carpets, cushions, and even hair and skin and other chemical residues in tobacco.
2. Even smokers in outdoor smoking, nicotine or will be attached to smokers, as smokers back to the room, these materials will be spread by nicotine.
3. Those condenses on the surface of the object nicotine toxic substances, may remain for several weeks or even months. Even smokers fans and open windows while smoking, they can not eliminate the "third-hand smoke," the scourge.
Third-hand smoke carcinogens
In 2013, an interdisciplinary study by the US-led Chinese scientists found that third-hand smoke can cause genetic mutations in human cells, resulting in the possibility of cancer and other diseases. The findings, published in the "mutation" (Mutagenesis) magazine. Scientists said that third-hand smoke in some compounds, such as nicotine, surface adhesion force is strong and will chemically react with nitrous acid in the air, generate a strong carcinogenic nitrosamines.
These carcinogens Once inside the body, it will enter the cell, in the nucleus react with nucleic acids, causing gene mutation, which is an important reason for many diseases, especially cancer.
Third-hand smoke harm infants huge
Hazard "third-hand smoke" may be larger than the second-hand smoke. Because third-hand smoke can harm the body through three channels, including the lungs due to breathing after, and contaminated sofas, clothing and carpets from hand to mouth contact with contaminated route, as well as contact and friction of the skin and absorbed into the body body. The infant is the use of touch and taste to explore the world, they like to eat hands, grasping to eat any thing, and often on the floor or carpet, sofa playing crawling, easier and third-hand smoke exposure. In addition, because the baby breathe faster than adults, they inhale more at the same time, relatively low adult body weight of children, poor immunity, the greater the harm the same level of toxic substances on children. All these so infants can easily become a "third-hand smoke" victims. Tobacco residue of lead and arsenic and other toxic substances, the nervous system of children, Huxijitong, Xunhuanjitong can cause no small harm, including cognitive decline, increasing the chances of asthma and otitis chance.
A 2004 study in the Journal "Tobacco Control" found that about 43% of the age from 2 months to 11-year-olds live with a smoker. Smoke up to 90% of the nicotine will be attached to the vicinity of the surface of the object, if the mother is smoking, baby hugging his mother when nicotine and other harmful compounds may be inhaled.
Experiments have confirmed that smoking parents in the baby's urine and found hair nicotine metabolite cotinine (cotinine). Even if the family does not smoke, the baby's body to the level of cotinine in non-smokers parents is seven times smokers baby body cotinine levels.
How to eliminate the "third-hand smoke"
Some people deliberately avoid the family, in the workplace smokers, etc. after the smoke clears the room, but despite escaped hand smoke and passive smoking, "third-hand smoke" is no escape escape the long run may also induce lung cancer . Many parents believe that when a child is out of smoking and ventilation windows, do not cause harm to the child's health, which is obviously also an ignorant idea.
In recent years, developed countries have more and more people aware of the dangers of third-hand smoke, smokers suffer if the annual rental cars, hotels, apartments or adults may also become victims of smoke residue. A survey shows that the car has the smell of used cars sold for less than the market nearly 10%. "New York Times" a report that management 40000 apartment management company RelatedCompanies regulations allowed smoking in the apartment, because "in addition to second-hand smoke, the cost for a new tenant to change the carpet and walls are too high."
In addition, the Los Angeles Biomedical Research Institute Researchers also found that third-hand smoke inhalation in pregnant women fetal lung development would cause harm, the harm is equivalent to infant exposure to secondhand smoke. The researchers also called third-hand smoke "invisible toxins", as compared to second-hand smoke, they are more likely to be overlooked. Therefore, pregnant women should pay special attention away from third-hand smoke have a place.
Ultimately, of course, the fundamental way to eliminate third-hand smoke or quit smoking as soon as possible, if at home with young children and pregnant women, should avoid close contact with smokers, smokers should also promptly after a bath, wash your hair, change clothes. In order to reduce the risks of third-hand smoke, we must also actively called strict smoking in indoor public places, especially in hotels, restaurants and so on.
For non-smokers, the best way to protect yourself is to avoid those places you can smell the smoke and articles, whether or not to see someone smoking, and actively exhort their family members to quit smoking.
For smokers, we can only say: If you want to continue to smoke, you are a sustained release of harmful substances pollution, please consciously stay away from the person you love, especially children and pregnant women.
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