In 2009, Dio was diagnosed with stomach cancer and underwent treatment at the M.D. Anderson Cancer Center in Houston, Texas.

On May 4, 2010, Heaven & Hell announced they were canceling all summer dates as a result of Dio's health condition.
His last live performance was with Heaven & Hell on August 29, 2009, in Atlantic City, New Jersey.
Dio died of the illness on May 16, 2010.

Two weeks after his death, a public memorial service was held at The Hall of Liberty, Forest Lawn Hollywood Hills, Los Angeles.
The hall was filled to capacity, with many more fans sitting outside the hall watching the memorial on multiple giant screens on both the east and south sides of the hall.
Friends, family, and former and current bandmates of Dio gave speeches and performed including Rudy Sarzo, Geoff Tate, John Payne, Glenn Hughes, Joey Belladonna, and Heaven & Hell keyboard player, Scott Warren.
On the screen was an accompanying documentary covering Dio's career from his early days with Elf to his final project with Heaven & Hell.
In 2009, Dio was diagnosed with stomach cancer and underwent treatment at the M.D. Anderson Cancer Center in Houston, Texas.
On May 4, 2010, Heaven & Hell announced they were canceling all summer dates as a result of Dio's health condition. His last live performance was with Heaven & Hell on August 29, 2009, in Atlantic City, New Jersey. Dio died of the illness on May 16, 2010.
Two weeks after his death, a public memorial service was held at The Hall of Liberty, Forest Lawn Hollywood Hills, Los Angeles. The hall was filled to capacity, with many more fans sitting outside the hall watching the memorial on multiple giant screens on both the east and south sides of the hall. Friends, family, and former and current bandmates of Dio gave speeches and performed including Rudy Sarzo, Geoff Tate, John Payne, Glenn Hughes, Joey Belladonna, and Heaven & Hell keyboard player, Scott Warren. On the screen was an accompanying documentary covering Dio's career from his early days with Elf to his final project with Heaven & Hell.
Ronnie James Dio