Danny Jones Podcast #335 Summary
Episode Title: Carnivore MD vs Harvard Heart Doctor: Seed Oils are Actually GOOD For You
Release Date: September 26, 2025
Guests:
- Dr. Paul Saladino ("Carnivore MD")
- Dr. Nick Norwitz ("Harvard Heart Doctor")
Host: Danny Jones
EPISODE OVERVIEW
This episode brings together Paul Saladino, known for advocating a carnivore diet, and Nick Norwitz, a Harvard-trained MD/PhD focused on metabolic health, to debate the physiological impact and scientific evidence regarding seed oils, saturated fats, and metabolic health. The discussion explores personal health journeys, the flaws in nutritional research, differences between saturated and polyunsaturated fats, the role of LDL, context-dependent nutrition science, and the importance of individual metabolic health.
Danny's goal is to "get smarter" by unraveling the often confusing landscape of nutrition, starting with the controversial claim that "seed oils are good for you."
KEY DISCUSSION POINTS & INSIGHTS
1. Introductions & Personal Health Journeys (00:08–07:59)
- Nick Norwitz:
- Background as a Harvard MD/PhD.
- Personal battle with ulcerative colitis led him to question "evidence-based care" versus individual metabolic physiology.
- Notoriety from his "Oreo versus statin" self-experiment (higher cholesterol reduction with Oreos than with statins; 01:34).
- “In the world we live in now... there is clearly an uncomfortable collision... between academia, conventional medicine and the general public because of access to information…” (03:09)
- Paul Saladino:
- Started as a PA in cardiology, then MD, later psychiatric residency (which he now critiques for being "50 years behind").
- Disillusionment with conventional medicine's reductionist approach; nutrition was barely addressed in medical school (04:46).
- Cites hundreds/thousands of anecdotal cases of disease reversal (eczema, IBD, depression) via dietary change (07:07).
2. Problems with the Medical System & Standard Nutrition (07:59–15:58)
- Western medicine’s focus is on treating symptoms with drugs—not addressing root causes.
- Both guests and Danny note profound, positive changes from being “diligent” about diet, particularly low-carb/keto approaches.
- Influence of processed food industry: $11 billion/year on food research vs $1.9 billion/year (2019) NIH spending on nutrition (12:47).
- "The food industry... 10-11x what the NIH budget for nutrition studies is." — Paul Saladino (12:47)
3. The Calories Model Critique (16:03–17:50)
- Nick argues, "Calories don’t cause obesity. ... ‘calories in, calories out’ is not in any way shape or form a biological explanation for obesity." (16:09)
- Paul and Nick stress the importance of food quality over pure calorie numbers, criticizing ideas pushed by industry-sponsored groups.
4. Statin Controversy: GLP-1 Suppression (18:21–22:16)
- Statins halve GLP-1, a hormone involved in metabolic health; not widely known or discussed among doctors.
- "Statins chop GLP1 levels in half." — Nick Norwitz (19:33)
- Danny and Nick express frustration that this wasn’t widely publicized or incorporated into informed consent.
5. LDL Cholesterol: Causality and Context (24:24–46:38)
- Personal anecdotes: On strict keto/carnivore, all three had dramatically increased LDL ("lean mass hyper-responder" phenotype).
- “Mine was as high as 500.” — Paul Saladino (24:23)
- “574.” — Nick Norwitz (24:25)
- Advocates for interpreting LDL in metabolic context; high LDL in metabolically healthy people may not carry the same risk.
- Discuss various tests (CAC, CT angio, fasting insulin) to better assess cardiovascular health versus just LDL.
6. On Evidence, Causality, and "Gold Standard" Science (51:15–61:01)
- There's widespread confusion and misuse of terms like "causal" and "evidence-based."
- Institutions and incentives shape what gets studied and funded, leading to gaps in research on potentially powerful lifestyle interventions.
7. Metabolic Health: Testing, Importance, and Psychiatry Link (61:20–68:31)
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Fasting insulin is an accessible test for metabolic health; most doctors don't even order it.
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Psychiatric and neurological disease linked to metabolic health and diet—emerging research shows gut-brain connections (e.g., neurotransmitters made by gut bugs impact depression).
"The diseases we battle with... become ephemeral and abstract. And nowhere is that a bigger problem than in psychiatry." — Nick Norwitz (62:56)
8. Seed Oils, Omega-6, and Dietary Fats (74:18–88:09)
- Seed Oils: Highly industrialized, chemically processed, rich in omega-6 linoleic acid, now comprise a huge percentage of caloric intake ("5 tablespoons per day").
- Linoleic Acid: Essential fatty acid found in most foods, but now consumed in historically unprecedented amounts due to processed oils.
“In order to get 5 tablespoons of corn [oil], you would have to eat 60 ears of corn.” — Paul (78:40)
- Nuance: Distinction between Omega-6 as found in natural foods (walnuts, eggs) and industrial seed oils; high-dose, processed, and especially heated seed oils carry the most risk.
9. RCTs and the Evidence on Seed Oils (103:25–126:55)
- Most randomized controlled trials (RCTs) on seed oils vs saturated fats are outdated, flawed, and confounded (trans fats, poor randomization, etc.).
- "These poorly done studies... will probably never be repeated." — Paul (109:40)
- The Minnesota Coronary Experiment (112:25) found lower LDL via corn oil but trending towards worse mortality, especially in those 65+.
"The more the cholesterol drops as a result of the intervention [corn oil], the higher the probability of death." — Nick Norwitz (116:30)
- Criticisms of “suppressing” inconvenient findings; overall, no RCT gives a clear benefit to seed oils, and evidence of harm may be stronger, especially in context.
10. Mechanistic & Contextual Factors in Dietary Risk (126:55–149:49)
- Bioactive effects of fats (e.g., LDL oxidation, ox-lams, endocannabinoids) are context-dependent (body fat, metabolic status, processing/cooking method).
- Refined, bleached, and deodorized seed oils are often contaminated (benzene, hexane, phthalates) and oxidized, especially when heated (deep fryers).
“A large French fry at McDonald's is equivalent to the amount of acrolein in a pack of cigarettes.” — Paul (146:37)
- Cooking in tallow instead of seed oils likely less harmful but deep frying, in general, is not optimal.
11. Lifestyle & Environmental Factors (149:49–161:12)
- Discussion of “blue zones,” environmental factors (sunlight, UV/IR), and how Costa Rican or ancestral lifestyles may confer health benefits beyond just diet.
- Modern processed foods, altered sleep, and light exposure can dysregulate health independently of macronutrients.
12. The Value of Anecdotes and N=1 Experiments (163:07–168:26)
- While not high on evidence hierarchy, personal stories are most persuasive at the individual level; science should use them as hypothesis-generating.
- Both vegan and carnivore/low-carb eliminations will often help by removing processed foods.
NOTABLE QUOTES & MEMORABLE MOMENTS
- “Calories don’t cause obesity... ‘calories in, calories out’ is not in any way shape or form a biological explanation for obesity.” — Nick Norwitz (16:09)
- “In Western medicine... when someone is sick, it’s important to try and understand what is actually at the root cause of their problem. Western medicine really points the finger at LDL.” — Paul Saladino (47:17)
- “Medicine is siloed, metabolism is unified. That is a fact.” — Nick Norwitz (67:59)
- “A large French fry at McDonald’s is equivalent to the amount of acrolein in a pack of cigarettes.” — Paul Saladino (146:37)
- “You can eat a sweet potato and get a more potent [LDL] effect than taking a drug for the rest of your life. ... That is better patient care.” — Nick Norwitz (32:13)
- “If you just take a step beyond a calories model and focus on food quality... you’re going to be light years ahead.” — Paul Saladino (208:15)
- “We need to inspire curiosity and awe in the physiology of all of this. ... I honestly think curiosity can save lives.” — Nick Norwitz (204:30)
TIMESTAMPS FOR IMPORTANT SEGMENTS
- 00:08–07:59 — Guest introductions, personal stories, "Oreo vs statin" experiment.
- 15:58–18:16 — Discussion of research funding, processed food industry influence.
- 18:21–22:16 — Statins, GLP-1 suppression, clinical implications.
- 24:24–46:38 — LDL, APOB, and cardiovascular risk: contextual analysis, lean mass hyper-responder debate.
- 61:20–68:31 — How to assess metabolic health (fasting insulin), gut-brain-psychiatric health link.
- 74:18–88:09 — Defining seed oils, Omega-6/linoleic acid, food processing context.
- 103:25–126:55 — RCTs, Minnesota Coronary Experiment deep dive, flaws in nutritional “gold standard” evidence.
- 146:24–149:39 — Toxic byproducts in heated seed oils, tallow cooking, practical takeaways.
- 163:07–168:26 — Value of anecdotes, limitations of evidence hierarchy, elimination diets.
- 208:14–211:16 — Final thoughts: food quality over calories, the importance of curiosity and progressive learning.
CONCLUSION & PRACTICAL TAKEAWAYS
- Context is King: No single metric (like LDL, calories, or even saturated fat) tells the whole story—individual metabolic context matters enormously.
- Seed Oils: Most concern is with highly processed, industrial seed oils (especially when heated). Natural omega-6 sources (like walnuts) are not equated with seed oils.
- Metabolic Health First: Fasting insulin is an underused but crucial measure; strive for <5 μIU/mL.
- Whole Foods: Consistently, the advice is to move away from processed foods and toward nutrient-dense, whole foods (meat, eggs, fruit, minimally processed plants).
- Food Quality > Calories: The calorie model is reductionist and distracts from food’s qualitative effects.
- Be Curious & Humble: Nutrition science is complex and incomplete; adopting a curious and contextually humble mindset is the path forward.
- Personalization: Listen to your own responses, n=1 experiments matter—be willing to adapt based on personal and emerging scientific evidence.
FINAL QUOTE
"If you move away from calories and you've moved toward the idea of food quality, you're on the right track. Just keep following your nose from there and you'll do good."
— Paul Saladino (208:15)
For further resources and deep dives, check out:
- Paul Saladino: @PaulSaladinoMD and all major platforms
- Nick Norwitz: Substack at staycuriousmetabolism.com