BMI stands for Body Mass Index. It’s one of the tools people use to work out if they are a healthy weight for their height. But it’s not foolproof. One physician who specializes in obesity reveals that many of her patients receive a score that doesn’t reflect the healthiness of their body composition, and explains what is meant by the term “skinny-fat.” BMI has come under flak from other popular medical professionals, too. One UK doctor says it “should not be used” in isolation to predict health risks. Dr Rocio Salas-Whalen, meanwhile, is a certified physician who works with patients with obes…