Dr. Mehmet Oz gave the public an update about the condition of "Jeopardy!" host Alex Trebek while appearing on "Fox & Friends" Thursday. Trebek has been battling pancreatic cancer and recently announced that he has to undergo another bout of chemotherapy. "The Dr. Oz Show" host said he visited with Trebek a few weeks ago and said he is keeping his head up throughout his health struggle. Oz noted that Trebek has been suffering with mouth ulcers but said those are just minor issues. "He's an incredible fighter and a great American, who's Canadian. ... He's a strong man and I think he's doing much better than I would do," Dr. Oz said.