Electronic cigarette (EC) use, or vaping, has both gained incredible popularity and generated tremendous controversy, but although they may be less harmful than tobacco cigarettes (TCs), they have major potential risks that may be underestimated by health authorities, the public, and medical professionals. Two cardiovascular specialists review the latest scientific studies on the cardiovascular effects of cigarette smoking versus ECs in the Canadian Journal of Cardiology. They conclude that young non-smokers should be discouraged from vaping, flavors targeted towards adolescents should be banned, and laws and regulations restricting their availability to our youth should be passed and strictly enforced.