Since 1991 ?   It started way before that.   Even back in the 60's Alaska was the fat chick capital of America.  Guys started eating more to fatten up so their women didn't feel out of place.  Adding to the problems was in the 70's when McDonald's came to Alaska.  Thanks to us legalizing pot even more will become couch potato's and munch on chips all day long while wasting away they're days stoned . Video games took away kidding playing outside and cell phones took away the need to walk over and talk to people.  Before long the gravitational pull from the moon will change due to so many fat people on planet earth. That's the true cause of global warming---fat people are causing us to get closer to the sun.