(VIDEO) Vancouver-born actor Seth Rogen speaks to U.S. Senators about Alzheimer's

Vancouver-born actor Seth Rogen spoke to U.S. Congress in Washington on Wednesday, and his speech is getting as much attention for its topic as it is for the reception (or lack thereof) Rogen received from all but two American Senators.

Rogen was on Capitol Hill to speak about Alzheimer's disease and its effect on his mother-in-law, Adele Miller, and to push for more attention and awareness to be devoted to the disease – especially, Rogen says, as its begins to affect more and more people, and younger people.

Rogen and his wife Lauren Miller have started a foundation called Hilarity for Charity.

"We chose to focus on young people because they are the ones who will be affected by this (Alzheimer's) very soon," Rogen told Congress. "And there seems to be almost zero acknowledgement of it in the world of these young people.

"It seems to be something that people, again, think only happens kind of naturally when people enter their 90s and I don't think people understand that it's not their grandparents being affected, it's their parents being affected. And soon enough, it's them being affected."

But before Rogen could begin his speech, 16 of the 18 Senators on the subcommittee Rogen was speaking to got up and left, and the actor was outspoken of this on his own Twitter account.

He also told MSNBC host Chris Matthews after his speech that the Senators premature departure was "indicative of a mentality that we find so frustrating. It seems like these people don't care" (according to the HuffPost UK).

The actor and established Hollywood star was born and raised in Vancouver, and attended Point Grey High School. His first forays were into television, in the Judd Apatow shows Freaks and Geeks and then Undeclared, and he has risen to stardom with movies like The 40 Year Old Virgin, Knocked Up, and Superbad.

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