As heated tobacco products reenter the US market, evidence on their safety remains sparse new study Hamburg, Germany. 12th Dec, 2018. James Monsees (r) and Adam Bowen, founder of the e cigarette manufacturer "Juul", look into the photographer's camera at the Hotel Tortue. "Juul" is the market leader for Increased e cigarette use prevalence is associated with decreased smoking prevalence among US adults Harm Reduction Journal Springer Nature Link While vaping is not risk free, it is less harmful than tobacco Our World in Data