More kids, especially girls, are thinking about suicide. It's not clear why

A new study out Wednesday finds that more kids are either thinking about or attempting suicide.

“When we looked at hospitalizations for suicidal ideation and suicidal encounters over the last decade, essentially 2008 to 2015, we found that the rates doubled among children that were hospitalized for suicidal thoughts or activity,” Dr. Gregory Plemmons of Vanderbilt University told NBC News. Click here for more details