The Friday File: Researchers find that being overweight (BMI between 25 and 30) surprisingly lowers risk of death by 6%, and having a BMI between 30 and 35, by 5%! While no one knows why, health experts are spinning like bad economists. Maybe BMI is flawed or maybe by setting the normal category between 18.5 and 25 they included too many underweight persons. Whatever the reason, pass the cheeseburger!