Use of e-cigarettes every day can nearly double the odds of a heart attack, according to a new analysis of a survey of nearly 70,000 people, led by researchers at UC San Francisco. This is the first study to examine the relationship between e-cigarette use and heart attacks, and begins to fill the understanding of the effects of e-cigarettes on long-term health. "Most adults who use e-cigarettes continue to smoke cigarettes," said senior author Stanton Glantz, [...]