I bet every time they conduct a study, the scientists get all excited and are like, "This is the study that the fatties will listen too! This time we are changing lives."  Then a month after the study they are all depressed and say "they didn't listen this time either.  We conclusively proved that being fate I'll kill you, but they are still shoving Oreos down their throats at alarming rates."  Then they all get depressed and wonder why they even bother.