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Special Reports September 2017 Issue

Nutrition Then and Now

The science of nutrition is ever-evolving, resulting in small changes and larger shifts in dietary advice over time.

Advice about how to eat for good health sometimes changes. To you, it may seem like scientists can't make up their minds. What's really happening is that scientists are continually learning new things about nutrition and health through research studies. Experts modify dietary guidance based on the totality of scientific evidence on a given topic.

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