(FOX NEWS) -- Roughly a week after he triumphantly returned to "Jeopardy!," Alex Trebek revealed he's undergoing another round of chemotherapy to treat his pancreatic cancer.
Trebek, 79, said in an interview published Tuesday his doctors think more chemotherapy is warranted after his "numbers went sky high" and he lost 12 pounds in just a week.
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“I was doing so well," the beloved host told ABC News. "My numbers went down to the equivalent of a normal human being who does not have pancreatic cancer. So we were all very optimistic. And they said, 'Good, we're gonna stop chemo, we'll start you on immunotherapy.'"