US actor Robin Williams poses for photographers during a photocall in Rome in this file picture taken November 15, 2005.[Photo/Agencies]

Celebrities, fans mourn the Robin Williams' death

Chinese film fans mourn for star

Williams, 63, was found dead by his personal assistant at midday on Monday in a bedroom. The official preliminary cause of death was asphyxia due to hanging, he said, and conclusion of the investigation is still weeks away.

Williams had been open about his struggles with alcohol and cocaine and in the past months had entered a rehabilitation center to help him maintain sobriety. But many questions remained over what could have led him to take his own life.

His tragic end stood in stark contrast to the many on-screen characters he portrayed who encouraged those around them to tap into their own inner vitality, a wellspring of creativity to which he himself gave full vent in films such as "Good Morning, Vietnam" and "Dead Poets Society."

Williams is not the only celebrity who have suffered from depression. Read on to find out more.