Collingwood youngster Ben Crocker is hoping plenty of Magpies supporters will join his family at Sunday's Memory Walk and Jog in Templestowe.

The event is a key fundraiser for Dementia Australia, which provides support for the almost 105,000 Victorians living with dementia.

The cause is close to Crocker's heart as his father, Paul, was diagnosed with early-onset dementia in 2014 at the age of 53 and now requires full-time care.

"It is sad when I think about it that his involvement now [in my career] is pretty much nothing. He comes to the games but he doesn’t understand what’s going on," Crocker recently told Fox Footy's On The Mark program.

“I can’t seek feedback off him, I can’t talk to him about how I played and how he enjoyed the game.

"The more I think about it, it is a shame that he doesn’t know I’m playing for Collingwood, because I grew up barracking for Collingwood and I know how proud he’d be of me.

"That’s the saddest thing about it — that Dad would be so proud of me. He actually came into the rooms after my first game and that was probably the last memory he would’ve had of me playing footy."

Ben Crocker and his father (Photo: Collingwood Media)

Crocker, 21, is now an ambassador for Dementia Australia, and a number of his family members recently shared their story as part of a mini-documentary produced by Collingwood Media.

"I think the whole process over the past four, five years ... really has toughened us up mentally," Ben's brother Sam Crocker says in the video.

"[For us], it's not about sit around and worry about what's going to happen."

For the Crocker family, it's about caring for Paul as best they can while trying to raise awareness and money for Dementia Australia by taking part in events like Sunday's walk.

CLICK HERE for information on the Memory Walk and Jog

If you need further help or information, call the National Dementia Helpline on 1800 100 500