Puffing just one e-cigarette with nicotine can cause damage to the heart of nonsmokers, a new study suggests.
The study included 33 healthy nonsmokers. On different days, participants used an e-cigarette with nicotine, an e-cigarette without nicotine or an empty device. Researchers measured adrenaline levels in the heart. They found participants had a pattern of abnormal heart rate variability, indicating increased adrenaline levels, after they used the e-cigarette with nicotine. They determined the increased levels were due to the inhaled nicotine and not the non-nicotine components of the e-cigarette aerosol, Newsweek reports.