Seven months after announcing he had been diagnosed with stage 4 pancreatic cancer, “Jeopardy!” host Alex Trebek has filmed a public service announcement with the World Pancreatic Cancer Coalition to encourage awareness around the illness.

In the PSA, Trebek says he “wishes [he] had known sooner” that he was experiencing symptoms of the disease, including persistent stomach pain.

"Other common symptoms can include mid-back pain, unexplained weight loss, new onset diabetes and the yellowing of the skin or eyes,” he adds.

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Trebek notes that pancreatic cancer is "the only major cancer with a five year survival rate in the single digits” and is frequently not noticed or diagnosed until it has entered later stages.

“In order to help patients fight and survive this disease, more attention and awareness are needed,” Trebek says in the PSA, encouraging viewers to wear purple in November, promote awareness on social media and observe World Pancreatic Cancer Day on Nov. 21.

Trebek has vowed to continue hosting the game show until his cancer treatments make his “skills diminish,” saying this month that it’s possible sores in his mouth due to chemotherapy treatments may eventually leave him unable to enunciate properly.

“I’m sure there are observant members of the television audience that notice also, but they’re forgiving,” he said earlier this month. “But there will come a point when they will no longer be able to say, ‘It’s OK.' "