Robin Williams tickled our collective funny bone for more than four decades with his manic, subversive humour. But nobody was laughing when the actor took his own life in August 2014, at the age of 63. His family, friends and fans around the world struggled to understand how a talented, rich, successful family man could find life so unbearable that he had to end it all. At first, rumour circulated that he had lost his long battle with alcohol and drug abuse. That was soon supplanted with reports the funny man suffered from severe depression. Then surfaced news that he’d been diagnosed with Parkinson’s disease. Last week his widow, Susan Schneider Williams, opened up about the real reason her husband committed suicide: A little-known disease called Lewy Body Dementia. I speak to a neurologist at Sunnybrook Health Sciences Centre at the University of Toronto who specializes in this devastating disease who breaks it down, in my latest piece for Yahoo! Click here or on the icon above to read all about it.