It has been a year since the Indian government banned electronic cigarettes, enough time to gauge its impact, whether it has served the intended purpose of preventing teen access and strengthened tobacco policy, and if there are any negative outcomes.

Long before India prohibited e-cigarettes last September, some other low- and middle-income countries – Mexico, Brazil and Thailand – had enacted a similar sale ban. In each of these nations, e-cigarettes are now widely available, smuggled and sold illegally as demand continues to rise. [...]