Do as I say, not as I do?
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Turns out, this adage applies to nutrition and diet advice as much as anything else, according to the experts we interviewed for this story. Even nutritionists can’t estimate calories correctly, explains NYU professor Marion Nestle, PhD, in her book Why Calories Count. In one experiment, nutritionist Lisa Young found that when dietitians were asked to estimate the number of calories in several fast-food meals during a meeting of the American Dietetic Association, they underestimated the amount by about 30 percent. What’s more, even the most well-meaning health experts may give outdated advice. Read on to learn the biggest pitfalls—and how to outsmart them.