ナショナルジオグラフィックのインスタグラム(natgeo) - 10月22日 05時00分

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Protein is the nutritional craze of the moment, but it's difficult to separate the hype from reality. While it's a necessary part of any balanced diet, it's also possible to consume too much.

Photograph by Deb Lindsey, The Washington Post/Getty Images

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