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Why Does Nutrition Advice Always Seem to Be Changing?

It can be hard to keep up with ever-changing guidelines. Marion Nestle shares a few principles to help steer you right.

Photo: Kseniya Ovchinnikova/Getty Images

Everyone eats. Everyone can claim firsthand experience and expertise. Whose experience and expertise should you trust? “Mine, of course,” is my standard (slightly facetious)…

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Marion Nestle

Professor of Nutrition, Food Studies & Public Health, emerita, NYU. Writes books about food politics; blogs at foodpolitics.com, tweets @marionnestle.