161: How Industry Influence Shapes U.S. Dietary Guidelines + Why Low-Fat WFPB Still Wins

The 2025 Dietary Guidelines have settled in, but are they helping people eat healthier?

In this episode, I sit down with registered dietitian and plant-based nutrition expert Dr. Anna Herby to unpack what's changed, who's influencing those changes, and what it all means for your plate.

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We talk about why fiber deserves way more attention than protein, how food industry interests can shape nutrition policy, and why a whole-food plant-based diet continues to stand on solid scientific ground.

If you've ever wondered whether nutrition advice is driven by science or something else, this conversation will help you cut through the noise.

In this episode, we talk about:

• How the food industry's influence shapes nutrition recommendations
• Why protein gets all the attention while fiber is often overlooked
• What the research really says about saturated fat and long-term health
• How whole plant foods naturally provide the nutrients your body needs
• Why a low-fat, whole-food plant-based diet is the way to go
• Why social media nutrition trends aren't always backed by evidence
• Simple ways to make food choices based on science instead of hype

Helpful links:

• 2025 Dietary Guidelines Advisory Committee Report (the original report from the committee)
• Uncompromised Dietary Guidelines (guidelines created by CSPI based on this report)
• Physicians Committee for Responsible Medicine (PCRM)
• NutritionFacts.org with Dr. Michael Greger
• RealFood.gov Scientific Rationale Report
• PCRM on weight loss and a plant-based diet
• Drop It Club: Plant-Powered Weight Loss
• Clean Food Dirty Girl Meal Plan Club

About our guest

Anna Herby, DHSc, RD, CDE, Nutrition Education Specialist, Physicians Committee for Responsible Medicine

Anna Herby, DHSc, RD, CDCES, is the nutrition education specialist for the Physicians Committee for Responsible Medicine, a Washington, D.C.-based nonprofit organization dedicated to promoting preventive medicine, especially better nutrition, and higher standards in research. Her work focuses on educating healthcare professionals and the general public on the role of nutrition in preventing, managing, and reversing chronic disease. Prior to joining the Physicians Committee, she worked as a clinical dietitian and Food for Life instructor at Adventist Health Howard Memorial Hospital in Willits, Calif. Dr. Herby received her Master of Science in nutrition from Bastyr University in Seattle and went on to earn a Doctor of Health Sciences from the University of Bridgeport.

About Clean Food Dirty Girl

Clean Food Dirty Girl helps people eat more plants while celebrating imperfection. Subscribe to our podcast for whole-food plant-based eating inspiration and permission to be perfectly imperfect.

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