E-cigarettes could be banned in the Californian city of San Francisco if draft legislation proposed on Tuesday becomes law.

Co-authored by two officials, the bill prohibits selling e-cigarettes not yet reviewed by the Food and Drug Administration (FDA).

Countries like Britain already have equivalent laws; India is considering one; Thailand forbid e-cigarettes entirely.

Lead US e-cigarette producer Juul—headquartered in San Francisco—used social media campaigns to gain popularity among under-25s.

The firm deleted its social media accounts following public health warnings that teenage e-cigarette usage was rising.

Juul told Fox Business it supported San Francisco “severely restricting youth access”, but asked why the city remained “comfortable with combustible cigarettes,” which “kill more than 480,000 Americans per year."

E-cigarettes have been proven to help tobacco smokers quit. Yet little is known about their long-term health impacts: studies show they contain toxic aerosols, and leak metals which can harm vapers’ lungs.

The FDA aims to complete ‘Priority’ drug reviews in six months, and ‘Standard’ ones in 10.

Is that enough time to fully investigate e-cigarettes’ long-term physiological implications?

What should the evaluation process—and timeframe—be for a product predicted to boast 55 million users by 2021?

       

Credit for this article's header image goes to Getty.