Should Ultraprocessed Foods Be Off The Menu? - Science Friday Recap

Podcast: Science Friday

Published: 2026-02-04

Duration: 30 minutes

Guests: Laura Schmidt, Alyssa Moran

Summary

Ultraprocessed foods dominate the American diet, raising concerns over health impacts. Experts discuss the push for dietary guidelines urging a shift to real, minimally processed foods.

What Happened

The episode opens with the host, Flora Lichtman, highlighting the prominence of ultraprocessed foods in the American diet and their inclusion in new federal dietary guidelines. Dr. Laura Schmidt and Dr. Alyssa Moran join to discuss the implications of these guidelines, expressing concerns about their focus on individual choices rather than the broader food environment.

Laura Schmidt critiques the guidelines for not addressing the systemic issues that make ultraprocessed foods so prevalent, such as their affordability and availability in grocery stores. She emphasizes that wealthier individuals might avoid these foods, but most people cannot due to economic constraints.

Alyssa Moran appreciates the guidelines for emphasizing real foods and limiting highly processed items, noting this is the first explicit call-out of ultraprocessed foods in the guidelines. She contrasts U.S. recommendations with those of other countries like Brazil, which have been ahead in addressing this issue.

The discussion touches on the controversial aspects of the guidelines, such as the emphasis on protein from meat and dairy, which contradicts past advice favoring plant-based proteins. Alyssa explains the influence of food industry interests on these guidelines, particularly from the meat and dairy sectors.

Alyssa and Laura further delve into the NOVA classification system, which defines ultraprocessed foods based on their design to be optimally appealing and reinforcing. They discuss how these foods are engineered to include dyes, emulsifiers, and other additives to enhance their appeal.

The episode explores the health impacts of ultraprocessed foods, linking them to chronic diseases and behaviors similar to substance use disorders. Alyssa highlights studies associating these foods with obesity, cardiometabolic diseases, and even depression.

Both guests argue for regulatory action similar to tobacco and alcohol control, suggesting taxes on sugar-sweetened beverages and policies promoting minimally processed foods. They emphasize the role of federal nutrition programs and the need for systemic changes to make healthy food choices accessible and affordable.

Key Insights

• The NOVA classification system categorizes ultraprocessed foods based on their design to be highly appealing and reinforcing, using additives like dyes and emulsifiers to enhance taste and appearance.
• Federal dietary guidelines in the U.S. now explicitly call for limiting ultraprocessed foods, marking a shift from previous guidelines that did not specifically address these items.
• Studies link ultraprocessed foods to chronic health issues such as obesity, cardiometabolic diseases, and depression, drawing parallels to behaviors seen in substance use disorders.
• Countries like Brazil have been proactive in addressing ultraprocessed foods in their dietary guidelines, contrasting with the U.S., where food industry influence, particularly from meat and dairy sectors, affects guideline recommendations.