[snip] And, more than 23 percent of people who have BMIs in the “normal” range (18.5 to 24.9) are unhealthy. This group of people often goes without having diseases diagnosed until they’re in advanced stages, since they believe they’re healthy, says Linda Bacon, Ph.D., a researcher at the University of California-Davis and author of Body Respect: What Conventional Health Books Get Wrong, Leave Out, and Just Plain Fail to Understand About Weight. Even when you see disease more among heavier people, it’s because of other variables correlated with a heavier weight, not the weight itself, says Bacon. For example, there’s a strong correlation between weight and poverty and a strong correlation between poverty and poor health, she says.
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