07/08/2020
๐ ๐๐๐ง๐ ๐๐ซ๐ฌ ๐จ๐ ๐๐ก๐ข๐ซ๐๐ก๐๐ง๐ ๐๐ฆ๐จ๐ค๐ โ ๐๐ฌ๐ฉ๐๐๐ข๐๐ฅ๐ฅ๐ฒ ๐ญ๐จ ๐๐ก๐ข๐ฅ๐๐ซ๐๐ง, ๐๐จ๐ง-๐๐ฆ๐จ๐ค๐๐ซ๐ฌ
Toxic chemicals stay on surfaces long after smoke clears
You know that smoking and secondhand smoke (smoke from a burning cigarette and exhaled by a smoker) are unhealthy. But another danger may surprise you โ thirdhand smoke, which is residue that lingers long after you empty the ash trays.
Thirdhand smoke is residual โ or leftover โ ni****ne and other chemicals that remain on clothing and surfaces after someone smokes in the area. Dangerous residue from to***co smoke sticks to carpets, walls and other surfaces after the smoke clears.
Researchers believe these lingering chemicals can harm your body just like smoking and secondhand smoke can. Research continues, but there are some things we know now, says pulmonologist Humberto Choi, MD.
1. Thirdhand smoke may be a culprit in more cancer cases
Researchers are investigating thirdhand smoke as they seek to understand some puzzling lung cancer cases.
โThereโs been an increased interest recently because we are seeing more lung cancer cases that are not related directly to firsthand or secondhand smoking,โ Dr. Choi says. โSo weโre looking at other causes for cancer aside from direct exposure.โ
2. Thirdhand smoke may damage DNA
One study found that being exposed to thirdhand smoke may cause damage and breaks in human DNA. Researchers tested human cells in a laboratory rather than actual humans. But Dr. Choi says DNA damage is a real risk and can increase your chances of disease.
3. Residue may react with airborne chemicals to form carcinogens
When you smoke in a room or car, toxic chemicals like ni****ne cling to walls, clothing, upholstery and other surfaces, as well as your skin. Results of a study published in 2010 found that when this ni****ne reacts with nitrous acid in the air, it forms carcinogens, which are compounds that can cause cancer.
Although this suggests a dangerous connection, โIt hasnโt been proven that thirdhand smoke is correlated with any other conditions,โ Dr. Choi says. โAnd that will be very difficult to prove because we are all exposed to it no matter how hard we try to avoid it.โ
For this reason, the specific risks of thirdhand smoke are still not completely clear, he says.
4. Children are most at risk
โI think children are the most vulnerable to thirdhand smoke because of exposure to surfaces like the floor and on their clothes and other objects in the house,โ Dr. Choi says.
This is particularly true for very young children who frequently touch objects and then put their hands in their mouths. This can increase their exposure to the toxic chemicals.
Non-smoking adults who live with regular smokers are also at a much higher risk for thirdhand smoke exposure. Dr. Choi says it may be helpful to study these individuals in the long term.
5. Removing the residue is very difficult
Thirdhand smoke residue builds up over time on most surfaces it touches. It can remain for weeks, months or even years. It resists normal cleaning methods and you canโt air it out of rooms or cars with fans or vacuums, Dr. Choi says.
For this reason, sometimes the only solution is replacing carpets, repainting walls and/or cleaning ventilation systems. So itโs expensive to completely rid a room of thirdhand smoke and eliminate the risk of exposure to future tenants or owners.
Dr. Choi stresses that the best solution for managing the dangers of thirdhand smoke is to stop smoking.
โThe best way to reduce exposure risk is to have a smoke-free environment โ especially where you live,โ he says. โAnd itโs not just about cutting down, but being abstinent.
He concludes, โIf you smoke, never smoke inside your house, because even if you donโt smell the smoke anymore, itโs still there. Still, the best approach is to avoid it completely.โ
https://health.clevelandclinic.org/5-things-you-should-knoโฆ/