An article about the singer Demi Lovato, who was hospitalized recently for an apparent drug overdose, and the enduring struggle of addiction and relapse, interviews Richard D. Blondell, MD
, professor of family medicine
and vice chair of addiction medicine
, who said a number of risk factors make relapses perilous, but the major culprit is often losing tolerance. “When a relapse occurs, someone may take a dose that they think is going to be effective — and it may even be half of what they were taking before — but because they’ve lost their tolerance, those tend to be lethal,” he said.