Alex Trebek, 79, the beloved and venerable host of “Jeopardy!,” says that his earlier comments about the treatment of his stage 4 pancreatic cancer were “overoptimistic” and that he needs more chemotherapy.

Here is Trebek talking about his condition on today’s “Good Morning America”:

If you click here, you can see Trebek’s short message on YouTube telling us about his present condition and asking for our prayers.