This is such absolute nonsense it's absurd The study found that waist circumference could predict death independent of BMI THAT DOESN'T MEAN PEOPLE ARE BEING MURDERED BY THE MEDICAL SYSTEMpic.twitter.com/s8YmmKQgpB
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TL:DR - headlines are dumb and directly contradict the study - BMI isn't useless it's very useful for most people - WC is also useful - BMI+WC is probably best!
Those might be the women with ascites or large intraabdominal masses. 
They did try to control for comorbid conditions but I'm sure there were things they couldn't exclude!
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