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New Investigation Cuts Through the Haze Surrounding ‘Smoke-Free’ Tobacco Products

…of using these devices. The team also continues to research the effects of thirdhand smoke – the lingering residues left behind after smoking conventional cigarettes, which they first described more than a decade ago. The objectives of the current investigation were to identify and quantify hazardous chemicals present in heat-not-burn emissions, and see how the device’s emissions compared with the data the scientists have collected about other tob…

Thirdhand Smoke Found to Increase Lung Cancer Risk in Mice

…and Bo Hang of Berkeley Lab first reported in 2017 that brief exposure to thirdhand smoke is associated with low body weight and immune changes in juvenile mice. In a follow-up study published recently in Clinical Science, the researchers and their team have determined that early thirdhand smoke exposure is also associated with increased incidence and severity of lung cancer in mice. Field studies in the U.S. and China have confirmed that the pre…

Thirdhand Smoke Affects Weight, Blood Cell Development in Mice

…worse damage than stinking up furniture and discoloring walls. Exposure to thirdhand smoke leads to biological effects on weight and cell development that could be damaging to one’s health, according to new research led by scientists at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab). Researchers Pin Wang (left) and Antoine Snijders investigate blood cells collected from mice exposed to thirdhand smoke. (Credit: Mar…

Berkeley Lab to Investigate Link between Thirdhand Smoke and Cancer

…million for two sets of studies to better understand the health impacts of thirdhand smoke, the noxious residue that clings to virtually all indoor surfaces long after the secondhand smoke from a cigarette has cleared out. The two three-year grants are from the Tobacco-Related Disease Research Program (TRDRP), which is managed by the University of California and funded by state cigarette taxes. In one set of studies, life science researchers will…

Thirdhand Smoke: Toxic Airborne Pollutants Linger Long After the Smoke Clears

…that clings to walls, carpets, furniture, or dust particles—are thanks to thirdhand smoke. Scientists at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), who have made important findings on the dangers of thirdhand smoke and how it adsorbs strongly onto indoor surfaces, have published a new study assessing the health effects of thirdhand smoke constituents present in indoor air. Looking at levels of more than…

Berkeley Lab Confirms Thirdhand Smoke Causes DNA Damage

…acute exposure, with the chemical compounds in samples exposed to chronic thirdhand smoke existing in higher concentrations and causing more DNA damage than samples exposed to acute thirdhand smoke, suggesting that the residue becomes more harmful over time. “This is the very first study to find that thirdhand smoke is mutagenic,” said Lara Gundel, a Berkeley Lab scientist and co-author of the study. “Tobacco-specific nitrosamines, some of the ch…

Berkeley study shows ozone and nicotine a bad combination for asthma

…nicotine itself. These ultrafine particles also become major components of thirdhand smoke – the residue from tobacco smoke that persists long after a cigarette or cigar has been extinguished. “Our study reveals that nicotine can react with ozone to form secondary organic aerosols that are less than 100 nanometers in diameter and become a source of thirdhand smoke,” says Mohamad Sleiman, a chemist with the Indoor Environment Department of Berkeley…

Study reveals dangers of nicotine in thirdhand smoke

…journal “Pediatrics,” in which it was reported that only 65 percent of non-smokers and 43 percent of smokers surveyed agreed with the statement that “Breathing air in a room today where people smoked yesterday can harm the health of infants and children.” Anyone who has entered a confined space – a room, an elevator, a vehicle, etc. – where someone recently smoked, knows that the scent lingers for an extended period of time. Scientists have been a…