Defenders of Obamacare just got a nasty reality check. The law was supposed to help Americans improve their health by expanding access to coverage.

Yet almost seven years after Obamacare’s passage and three years after the exchanges opened for business, Americans’ health is deteriorating at an alarming rate, according to new data from the Centers for Disease Control and Prevention. With two exceptions, 2015 was the first year in which life expectancy dropped since World War II.