Now playing
01:34
Alex Trebek tears up at contestant's kind message
PHOTO: Samantha Hartsoe
Now playing
02:24
Woman's bathroom mirror discovery goes viral
PHOTO: @neiltyson
Now playing
02:15
Colbert pokes fun at Neil Degrasse Tyson for vaccination photo
PHOTO: Stuart Weitzman
Now playing
00:39
Serena Williams and her daughter twin in new fashion ad
snl.fauci.vaccine.orig_00005420.png
snl.fauci.vaccine.orig_00005420.png
Now playing
01:24
'SNL' has 'Dr. Fauci' helping people get vaccinated
PHOTO: Instagram Lady Gaga
Now playing
00:56
Lady Gaga's 2 dogs returned home safely, LAPD says
PHOTO: Lewis Speaks
Now playing
01:13
Principal helps student with haircut issue
The Pokémon Company announced new games during its 25th Anniversary Celebration
PHOTO: The Pokémon Company
The Pokémon Company announced new games during its 25th Anniversary Celebration
Now playing
01:01
See the new Pokémon games coming soon
PHOTO: Maui63
Now playing
01:35
World's rarest marine dolphin finds protection in this flying friend
PHOTO: ABC's "Jimmy Kimmel Live!"
Now playing
01:46
Watch people struggle to identify second gentleman Doug Emhoff
PHOTO: nickelodeon/from youtube
Now playing
01:33
'Real World,' 'Frasier,' 'Spongebob:' See the reboots coming to this new streaming service
PHOTO: "The Late Late Show with James Corden" / Youtube
Now playing
01:37
See Prince Harry and James Corden tour LA on open-air bus
PHOTO: Harry Langdon/Archive Photos/Getty Images
Now playing
02:24
How Jane Fonda sparked a fitness revolution
jill biden kelly clarkson divorce advice orig mg_00001210.png
PHOTO: NBC / The Kelly Clarkson Show
jill biden kelly clarkson divorce advice orig mg_00001210.png
Now playing
01:12
Jill Biden opens up about divorce on Kelly Clarkson show
Fans Celebrate In Los Angeles After Lakers Win NBA Finals
PHOTO: (Photo by Brandon Bell/Getty Images)
Fans Celebrate In Los Angeles After Lakers Win NBA Finals
Now playing
01:14
Kyrie Irving says Kobe Bryant should be the NBA logo
PHOTO: 'GMA' / ABC
Now playing
01:56
Britney Spears' dad Jamie speaks out about conservatorship via lawyer on 'GMA'
(CNN) —  

Alex Trebek is working hard to raise awareness about the pancreatic cancer he is battling.

The “Jeopardy!” host, who announced his stage 4 diagnosis in March, has teamed with the World Pancreatic Cancer Coalition for a new public service announcement.

Trebek speaks in the video about the need for more attention and awareness about the disease and its symptoms.

He shares that in most countries, pancreatic cancer is “the only major cancer with a five year survival rate in the single digits.”

“I wish I had known sooner that the persistent stomach pain I experienced before my diagnosis was a symptom of pancreatic cancer,” he says in the video. “Other common symptoms can include mid back pain, unexplained weight loss, new onset diabetes and the yellowing of the skin or eyes.”

Pancreatic cancer is often a deadly disease because it frequently doesn’t get diagnosed until late stages.

Trebek encourages people in the video to wear purple in November and help spread the word about pancreatic cancer and its symptoms on social media.

World Pancreatic Cancer Day is Nov. 21, 2019.