I know, that's kind of the point. The study followed ~12000 people over 12 years, during which ~1900 died. There is little information past that point, but it was done by Statistics Canada (gov't organization) so I'll assume no bias. What is interesting, is that the news agencies reported some of it (ie. saying that being slightly overweight had no negative connotations regarding death rates) but not as the study showed. And yes, there should have been some investigation done on the higher death rates among the underweight.
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