Edward Archbold of West Palm Beach went outside after winning the contest at the Ben Siegal Reptile Store in Deerfield Beach Friday and collapsed. He was taken to a hospital where he was pronounced dead, The Miami Herald reported.
An autopsy was to be performed to determine the cause of death.
No other contestants got sick, the newspaper said.
Contest rules posted online said the winner would be "the guy or gal that eats the most bugs in 4 minutes without vomiting," the Herald said. The Broward County Sheriff's Office said in a report Archbold "had consumed dozens of roaches and worms."
His prize for winning the "Bugs for Balls" competition was a female Ivory Ball python.