Life expectancy in the United States fell for the second year in a row in 2016 — and it’s clear the epidemic of drug overdoses is at least in part to blame.

Life expectancy in the United States fell for the second year in a row in 2016 — and it’s clear the epidemic of drug overdoses is at least in part to blame. https://t.co/egbDs8wyrn

— NBC Nightly News with Lester Holt (@NBCNightlyNews) December 29, 2017