John Candy died of a heart attack in his sleep on March 4, 1994, at the age of 43 while filming the movie Wagons East near Durango, Mexico
. He had struggled with weight issues and health problems, and there was a family history of heart disease, as his father and brother had also suffered heart attacks
. Despite his jovial public persona, Candy battled smoking, anxiety, and past drug use, which contributed to his health decline
. His death was sudden, and he was found after going to sleep the night before, never waking up