Robin Williams’ Widow Reveals the True Cause of His Suicide in an Emotional New Interview

So heartbreaking.

In an emotional new interview with Good Morning America that aired Tuesday, Susan Schneider opens up about her late husband Robin Williams’ August 2014 suicide.

Susan discusses many things in the interview, but perhaps the most shocking is what she says caused Robin’s suicide. It’s not depression, like many believe, but a debilitating brain disorder called Lewy Body Dementia, which dramatically affects one’s thinking, emotions and behavior.

“Lewy Body Dementia killed Robin,” Susan says definitively in the interview. “It’s what took his life. And that’s what I’ve spent the last year trying to get to the bottom of. What took my husband’s life?”

Embedded from abcnews.go.com.