The Rich Roll Podcast

Episode: Decoding the New U.S. Dietary Guidelines with Simon Hill: What They Got Right, Wrong & Why It Matters

Date: March 26, 2026
Host: Rich Roll
Guest: Simon Hill (Host of The Proof Podcast)

Overview

In this episode, Rich Roll is joined by Simon Hill for an in-depth analysis of the newly released U.S. Dietary Guidelines. Together, they dissect what the new guidelines get right, where they go wrong, and the broader implications for both individuals and public policy. The conversation covers conflicting messaging on saturated fat, increased emphasis on animal-based protein, the decision-making process behind the guidelines, the impact of policy versus individual choice, and the ongoing challenge of unhealthy food environments in America.

Key Discussion Points & Insights

1. Main Changes and Themes in the 2025 Dietary Guidelines

[01:47–05:12]

• Continuation and Evolution: The new guidelines build heavily on previous versions but are more explicit in calling for the consumption of "real," minimally processed foods and avoiding hyper/ultra-processed foods.
• Public-Facing Approach: The guidelines are designed to communicate directly with the individual, not just as a policy tool.
• Explicit vs. Implicit Messaging: While the guidelines maintain a recommendation to keep saturated fat below 10% of calories, the visual layout (an inverted pyramid) and specific food inclusions (e.g., red meat, full-fat dairy, butter, tallow) visually contradict this message.
• Quote:

  "If you were to just create a plate of food consistently around the pyramid and those guidelines, most people will naturally consume more than 10% of their calories from saturated fat." — Simon Hill [05:12]

2. Conflicting Messages: Protein, Saturated Fat, and Food Imagery

[04:11–07:21]

• The new guidelines prioritize animal protein and full-fat dairy, which makes adherence to the less-than-10%-saturated-fat rule difficult for most people.
• There is an apparent disconnect between stated scientific recommendations and promotional imagery.
• Quote:

  "There seems to be a sort of inherent conflict between this messaging of maintaining your intake of saturated fat under 10% with the imagery of these other foods that are at the very top of this new graphic." — Maha [04:11]

3. The Policy Process: Who Really Writes the Guidelines?

[07:21–11:29]

• Dietary guidelines originate with an advisory scientific committee (e.g., Christopher Gardner), but their recommendations were largely set aside.
• Instead, an administration-chosen panel performed their own review, and ultimately, politicians made the final decisions, often diverging from evidence-based guidance.
• Concerns about corporate, financial, and personal biases influencing recommendations.
• Quote:

  "I'm led to believe through these conversations I've had that really it's politicians that end up writing the guidelines." — Simon Hill [09:47] "There's no scientific evidence-based rationale for promoting beef tallow." — Maha [11:22]

4. The Science: Protein Intake, Source, and “Quality”

[22:07–40:31]

• Current Consumption: Most Americans already meet or exceed optimal protein intake for muscle maintenance (about 1.2g/kg body weight).
• Sarcopenia Cause: Primary driver is physical inactivity, not protein deficiency.
• Animal vs. Plant Protein: No significant difference in muscle size or strength outcomes between plant and animal protein for well-nourished, active individuals—especially when resistance training is present.
• Overemphasis on Animal Protein: The guidelines’ focus may mislead the public to further prioritize animal protein, despite fiber being the main “missing nutrient.”
• Notable Study: Luke Van Loon’s research (soon-to-be published) found in elderly subjects that even with lower caloric/protein intake from vegan diets (due to satiety), no difference was found in muscle or strength gains when resistance training was present.
• Quotes:

  "We have to test that hypothesis. When you feed people animal protein in a controlled study, and you feed people plant protein... we don't see any significant differences in terms of those outcomes, muscle size and muscle strength." — Simon Hill [31:30] "I would have liked to have seen more commentary around the fact that 95% of Americans get nowhere near the fiber recommendations. That really should have been the nutrient of focus, not protein." — Simon Hill [27:52] "The TLDR here is this over emphasis on animal based proteins is misplaced because the evidence pretty strongly suggests that there isn't a difference in terms of the anabolic effects of protein based upon whether it's derived from an animal source or a plant source." — Maha [39:04]

5. The Process Gone Awry: Omissions and Surprising Inclusions

[11:29–12:55]

• The guidelines do not mention seed or vegetable oils, avoiding RFK Jr.’s anti-seed-oil stance despite his media rhetoric.
• Contradictory recommendations on “healthy fats”: errors in the explanations of oil types, showing a lack of scientific rigor.
• Quote:

  "In the guidelines... they did not, in any sentence at all, call out seed oils and tell people, recommend against their consumption. Because I think that in those cases, the evidence was just too strong." — Simon Hill [12:29]

6. Public Adherence: Do Guidelines Matter?

[13:28–16:44]

• Over 95% of Americans do not follow the guidelines—so blaming the guidelines for public health outcomes can be misguided.
• The real determinants of diet are environmental and socioeconomic, not recommendations themselves.
• However, guidelines remain crucial as they inform food policy, institutional meals, and procurement decisions.
• Quotes:

  "There's so much ink spilled about these guidelines every time they drop... without enough discourse around the fact that people just don't follow them. Fundamentally." — Maha [13:36] "The average American's diet is shaped by their environment, disparity in income, social determinants of health." — Simon Hill [13:57]

7. What Are Quality Proteins and Replacements?

[16:44–18:44; 40:31–41:14]

• Guidelines are better when they specify what to replace (eat less X, eat more Y). Health Canada is lauded for such clarity.
• “Quality” protein definitions should encompass both muscle health and long-term disease risk; plant proteins provide advantages for cardiovascular and metabolic health.
• Quote:

  "I think just having a bit more of a holistic definition of what a quality protein is would be really helpful right now." — Simon Hill [41:14]

8. Full-Fat Dairy and Fats: Cause for Confusion

[42:48–47:27]

• New guidelines shift from low-fat messaging to recommending full-fat dairy, butter, and tallow, introducing further contradictions—especially given saturated fat limits.
• Justification is weak or based on flavor/acceptance rather than health.
• Missing: Guidance on lactose intolerance and on choosing nutritious plant-based dairy alternatives.
• Quotes:

  "I didn't like the recommendation for butter. I think that was very contradictory to the best evidence that we have out there along with tallow." — Simon Hill [45:07] "The public deserve to know that again, that the low fat messaging didn't work. Not because...the science was wrong on saturated fat. It didn't work because the messaging resulted in people consuming more low fat, ultra processed foods." — Simon Hill [47:27]

9. Food Environment, Policy, and the Limits of Willpower

[51:00–56:58]

• Individual choices matter, but food policy and environment are decisive forces in shaping public health.
• Emphasis on “structural” and “environmental” determinants—proximity, affordability, advertising, social norms—are key, not just education or willpower.
• Both top-down (policy) and bottom-up (education, personal change) approaches are needed.
• Quotes:

  "To truly shape the average American's diet and to truly reduce metabolic diseases... is going to take massive structural changes and that requires policy changes." — Simon Hill [51:32] "One of the strongest predictors of healthspan is zip code." — Simon Hill [54:20]

10. Recommendations & Resources for the Audience

[58:26–60:23]

• Simon created realfood.theproof.com, a practical guide derived from the scientific committee’s recommendations, offering clear dietary guidance and myth-busting information.
• Endorsement of the Canadian dietary guidelines as a model.
• Suggestion for future roundtable episodes to further dissect public health and nutrition policy.

Notable Quotes

• On Conflicting Messaging:
  "If you create a plate of food around the pyramid, most people will naturally consume more than 10% of their calories from saturated fat." — Simon Hill [05:12]

• On Evidence vs. Policy:
  "Politicians end up writing the guidelines. And...I have to think there are reasons beyond public health that have influenced that set of recommendations." — Simon Hill [09:47]

• On Protein Quality:
  "When you feed people animal protein in a controlled study, and you feed people plant protein...we don't see any significant differences in terms of those outcomes, muscle size and muscle strength." — Simon Hill [31:30]

• On Structural Change vs. Willpower:
  "To truly reduce the metabolic diseases is going to take massive structural changes and that requires policy changes." — Simon Hill [51:32]

• On Practical Guidance:
  "I took those recommendations and developed a very clean, simple set of guidelines that also address some of the myths...realfood.theproof.com" — Simon Hill [58:49]

Memorable Moments

• Simon Hill’s “Fiber, Not Protein, Is What’s Missing” Mic Drop: Points out how 95% of Americans don't meet fiber recommendations; the focus on protein is misplaced. [27:52]
• Exclusive Early Reference to Luke Van Loon’s Soon-to-be-Published Study: Simon shares unpublished results showing no difference in muscle gains between vegan and omnivorous diets with resistance training in elderly adults. [36:55, 39:48]
• Maha Calls Out Contradictions:
  "When I see guidelines that are emphasizing things that are kind of disease promoting on some level, like too much red meat...I would have preferred if the messaging was...we need to be eating more plant foods. I'm not saying everybody should go plant based, but...they're eating way too much meat, they're eating way too much processed food." [48:08]

Timestamps for Important Segments

• Conflicting saturated fat and protein recommendations: [04:11–07:21]
• How guidelines are (really) made and conflicts of interest: [07:21–11:29]
• Seed oils and dietary fat mythbusting: [11:29–12:55]
• Who follows guidelines and why food environments matter: [13:28–16:44]; [51:00–56:58]
• Latest protein science, muscle health, and "quality" proteins: [22:07–41:14]
• Full-fat dairy and saturated fat messaging: [42:48–47:27]
• Solutions and practical guidance: [58:26–60:23]

Resources Mentioned

• Practical Guidelines: realfood.theproof.com [58:26]
• Podcast episodes with experts: Simon mentions his own Proof Podcast episodes with Christopher Gardner and Ty Beal. [60:16]
• Model Guidelines: Health Canada’s dietary guidelines [59:38]

Summary Verdict

This episode provides a thorough, evidence-based critique of the new U.S. Dietary Guidelines. While applauding the greater emphasis on whole foods and clear public messaging, both Rich and Simon point out troubling contradictions—especially the push for animal protein and full-fat dairy, which undermines saturated fat recommendations and ignores evidence in favor of plant-based nutrition. The episode is rich with actionable insights for individuals, but ultimately stresses that personal choices must be supported by system-wide policy change if we hope to see real improvements in public health.