Opioid abuse in the U.S. is so bad it’s lowering life expectancy. Why hasn’t the epidemic hit other countries?

It is not hard to understand why: In 2016, there was a 21 percent rise in the number of deaths caused by drug overdoses, with opioids causing two-thirds of them. Last year, the opioid epidemic killed 42,000 people, more than died of AIDS in any year at the height of the crisis.