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People want to avoid ultra-processed foods. But experts struggle to define them

The majority of foods sold in U.S. grocery stores are considered ultra-processed. But some nutritionists say not all of them are unhealthy. (iStockphoto/Getty Images)
The majority of foods sold in U.S. grocery stores are considered ultra-processed. But some nutritionists say not all of them are unhealthy. (iStockphoto/Getty Images)

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