The science of CBD lags behind its marketing

Treatments for pain and other common health problems often fall short, leading to untold misery and frustration. So it’s not hard to understand the lure of a treatment that promises to be benign, natural and good for just about everything that ails you. Enter cannabidiol, or CBD.

So far, the U.S. Food and Drug Administration has approved only one drug containing the chemical: a treatment for rare and severe forms of epilepsy.