E-cigarettes aren't considered as risky as regular cigarettes, but researchers have found a clue that their flavourings may be bad for the heart. It's a leading cause of heart attacks, too, and little is known about e-cigarettes and heart disease. They exposed the cells to six different e-cigarette flavourings, testing if the flavours — and not just the nicotine — caused any effects. Small laboratory studies like this one can't prove vaping really does harm, cautioned Dr. Jane Freedman of the University of Massachusetts, who wasn't involved in the research. He worries about people who already have heart disease and may think switching from tobacco to e-cigarettes is enough protection.

Source: CBC News May 28, 2019 18:56 UTC