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Joel Harold Tannenbaum /

The Difficulty in Defining ‘Bad’ Foods

To reduce Americans’ consumption of ultra-processed foods, we must first decide what that means.
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A customer shops at an H-E-B grocery store in Austin, Texas. (Photo by Brandon Bell/Getty Images)

Ultra-processed foods seem to be on everyone’s lips lately—and not just as a salty snack. A widely reported recent study from University College London asserts that such foods slow weight loss. A report last month from the Centers for Disease Control and Prevention sounds the alarm that Americans consume more than half of their diets in the form of ultra-processed foods.

Joel Harold Tannenbaum chairs the Humanities Department at Community College of Philadelphia and occasionally finds time to publish on the history of food and food science.

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