For some reason I can't open the link but I have seen various before/after pics of Presidents. Just the other day they showed an old clip of GW Bush and he looked so young.

It's almost as if you forgot they were once younger but it really wasn't that long ago since they looked that way. I can see President Obama is getting gray hair (he'll be 50 next month)and by the time he leaves the White House he'll probably be totally gray.
TIS