Life expectancy is down for a second year. Drug overdoses are a big reason why.

The difference between the U.S. and most of the rest of the world “is very stark,” said Jonathan Skinner, a professor of economics at Dartmouth College.

Newborns in 29 countries, including Japan, Australia and Spain, had life expectancies above 80 years in 2015, according to the World Health Organization. The average global life expectancy was 71.4 and rising, according to that agency’s most recent report.  

Study finds more spending doesn’t improve heart attack patients’ outcomes

More Medicare dollars spent on treatment of a heart attack patient doesn't lead to better health outcomes, according to a new study.

A JAMA study published Wednesday found that mortality rates stayed constant for heart attack patients up to 180 days after discharge even as spending on cardiac procedures and post-acute care rose. But the study did find mortality dropped among patients who received early percutaneous coronary intervention, also known as angioplasty with a stent.