The Jeopardy! host was taken ill last weekend but was released from hospital on Wednesday (June 27).
He has now told People about the incident but joked that his illness was "just an attempt to get attention".
"[It had] almost as big an effect as when I shaved my moustache 12 years ago," he added.
Trebek also quipped: "Maybe I'll take a little better care of myself, but I wouldn't count on it."
Trebek revealed that he thought he was suffering from "muscle strain" but agreed to go to the hospital because his wife "was very adamant and had tears in her eyes".
"I didn't want to upset her more than I had already so I went, and she was right," he said. "My body cleared the blockage itself. My heart seems to heal, so that speaks well for my future."