Imagine science textbooks 100 years from now.  Apparently we are doomed to have a chapter that says, "In the year 2048, the American population completed the full mutation and morphed into a new, totally obese nation."  Sound incredible?? Even a bit insane?? Well according to experts, our destiny seems to be a 4 more decade movement that will result in almost every American overweight or obese.  I'm sure Lane Bryant and all those plus-size stores are rejoicing - and maybe we should be...