The use of e-cigarettes is becoming more prevalent worldwide. In the US, more than 2 million middle and high school studentsuse e-cigarettes, which has led the Food and Drug Administration to declare an “e-cigarette epidemic among teens”. However, I am not convinced this is a problem of similar magnitude in Hong Kong. Researchers in 2016 found that 1.1 per cent of Hong Kong students used e-cigarettes, much lower than in the US (1.5-13.4 per cent) and South Korea (4.7 per cent).