Nutrition Expert Marion Nestle to Speak on Controversial Dietary Guidelines

Nestle to unpack how politics, industry influence reshaped America's food advice at March 19 talk

Mar. 12, 2026 at 3:26am

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When the federal government unveiled the controversial 2025-2030 Dietary Guidelines for Americans in January, nutrition scientists cried foul. A talk by one of the nation's leading food policy critics, Marion Nestle, will help explain the ramifications of the new guidance. Nestle, a professor emerita at New York University, will discuss how politics, industry influence and ideology reshaped America's food advice - and why it matters far beyond the dinner plate.

Why it matters

The new dietary guidelines not only set aside key recommendations from the administration's own independent scientific advisory committee, but also replaced the familiar MyPlate graphic with an inverted food pyramid emphasizing meat and full-fat dairy. Critics argue the process departed from long-standing norms of scientific transparency and independence, raising concerns about a lack of transparency in how the final guidelines were written and reported financial ties between some supplemental reviewers and the beef and dairy industries.

The details

Every five years, the Dietary Guidelines for Americans are updated through a process that has traditionally relied on a comprehensive review of evidence, conducted by an independent Dietary Guidelines Advisory Committee. For the 2025-2030 edition, a 20-member committee spent two years evaluating research on diet, chronic disease and health equity before submitting a detailed scientific report in December 2024. Yet many of the committee's recommendations were not incorporated into the final document. Administration officials cited objections to the committee's use of a health equity lens in evaluating evidence, contending that the guidelines should focus strictly on dietary science. The final document also omitted discussion of environmental sustainability.

  • The new 2025-2030 Dietary Guidelines for Americans were unveiled in January 2026.
  • The Dietary Guidelines Advisory Committee submitted its detailed scientific report in December 2024.
  • Marion Nestle's talk is scheduled for March 19, 2026 from 4-5 p.m.

The players

Marion Nestle

A professor emerita at New York University and a leading food policy critic who will unpack how politics, industry influence and ideology reshaped America's food advice.

Dietary Guidelines Advisory Committee

A 20-member committee that spent two years evaluating research on diet, chronic disease and health equity before submitting a detailed scientific report in December 2024.

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What they’re saying

“Bottom line, these new guidelines represent a political message, not a scientific one. What raises red flags is when they are saying, 'Everything you ever knew about nutrition is wrong.' You have to roll your eyes.”

— Marion Nestle, Professor Emerita, New York University (Mirage News)

“There's evidence that there was immense lobbying around these guidelines. The message is that you are responsible for your own health and you need to make your own decisions about it regardless of what the science says. I don't think that's a helpful message.”

— Marion Nestle, Professor Emerita, New York University (Mirage News)

What’s next

The public will have an opportunity to hear directly from nutrition expert Marion Nestle on March 19 as she unpacks the politics and industry influence behind the controversial 2025-2030 Dietary Guidelines for Americans.

The takeaway

The new dietary guidelines have raised concerns among nutrition scientists about a lack of transparency and the influence of industry lobbying, underscoring the need for policymaking to be grounded in independent, evidence-based science rather than political ideology or corporate interests.