A police officer displays some of more than 19,000 bags of heroin in Hazleton, Pa., on Jan. 19, 2016. (Ellen F. O’Connell/Hazelton Standard-Speaker via Associated Press)

As a chronic-pain sufferer myself, I read the Feb. 2 Health & Science article “Chronic pain meets worries about opioid addiction” with great interest. But I question the statistic that 28,647 people died in 2014 from “prescription opioids and heroin overdoses.” Is that equating heroin with prescription opioid painkillers? There is a big difference between the two, from legality to effect. That number should have been parsed into two drug overdose death statistics.

Patrick Clarke, Rockville