Episode 1389: Chris Kresser
Why This Episode Is Problematic
Joe Rogan hosted Chris Kresser, a licensed acupuncturist and functional medicine practitioner, to “debunk” the documentary The Game Changers in a three-hour solo session presented as authoritative nutrition science. Within weeks, Rogan was forced to invite Game Changers producer James Wilks back for episode 1393, where Kresser’s central claims were systematically dismantled in front of him.
TL;DR: Rogan platformed an acupuncturist with no formal nutrition or medical training to make sweeping claims about cancer, heart disease, and protein science — and even Rogan ultimately admitted Kresser got “knocked out of the park” when challenged.
About the Guest
Chris Kresser is not a physician, registered dietitian, or research scientist. His credentials:
- Licensed acupuncturist (L.Ac.), California, since 2010
- Graduate of the Acupuncture and Integrative Medicine College, Berkeley
- Self-described “functional medicine” practitioner
- Author of paleo-diet books
He has a documented history of promoting positions outside the scientific mainstream, including arguing against flu vaccination, recommending raw milk for pregnant women, advising parents to skip the vitamin K shot for newborns, and cholesterol denialism. (RationalWiki)
Key Problematic Claims
1. Misrepresenting the dairy-and-cancer data
Kresser told Rogan that 84% of studies showed no association or decreased cancer risk from dairy.
- The same dataset can equally accurately be described as showing 87% of studies found no association or increased risk — Kresser cherry-picked the framing favorable to dairy.
- This is selective presentation, not a fact-check. (Biolayne)
2. Admitting he cannot read a forest plot
When discussing heme iron and cardiovascular disease, Kresser cited a meta-analysis. In the follow-up episode, Wilks asked Kresser if he could read the forest plot he was citing.
Kresser admitted he could not.
A practitioner confidently lecturing millions of listeners about epidemiological meta-analyses — while unable to read the basic statistical figure those analyses are built on — is the core problem. (Biolayne)
3. False claims about B12
Kresser repeatedly suggested B12 deficiency is primarily a vegan problem and that farmed animals are not supplemented with B12.
- In reality, livestock in industrial agriculture are routinely supplemented with cobalt or B12 because the soil and feed systems no longer support natural B12 production.
- Wilks brought receipts. Layne Norton’s review concluded Wilks “absolutely annihilated him on the vitamin B12 claims.” (Biolayne)
4. Inventing carbohydrate intake categories
Kresser used “low/moderate/high carb” definitions that don’t align with the scientific literature, then defended the made-up cutoffs as if they were standard.
- This let him slot studies into whatever bucket supported his preferred conclusion.
- Wilks called it “making up definitions.” (Biolayne)
5. Industry-funding framing
Kresser dismissed pro-plant-based research as “ideologically motivated” while waving away that:
- Industry-funded studies are 4–8x more likely to reach conclusions favorable to the funder.
- Roughly two-thirds of nutrition research is industry-funded — overwhelmingly by meat, dairy, and processed-food interests, not by tofu companies.
Joe Rogan’s Role
This episode is a textbook case of Rogan failing his audience as an interviewer.
- He invited a single non-expert to spend three hours “debunking” a documentary, with no counterweight present.
- He nodded along to claims he was in no position to evaluate.
- He treated “functional medicine” credentials as equivalent to research-grade nutrition science.
- He platformed the episode to tens of millions of listeners before any of it had been independently checked.
To Rogan’s credit: when pushback arrived, he did the right thing — he booked Wilks for episode 1393 and let him rebut Kresser face-to-face. After that follow-up, Rogan publicly said Wilks “knocked it out of the park” and admitted he considered taking the original Kresser episode offline. (Podcast Notes)
He did not take it offline. Episode 1389 remains up, still racking up views, still being cited by people who never watched the correction.
Why It Matters
Nutrition misinformation from popular podcasts directly shapes how millions of people eat, what supplements they buy, and whether they trust mainstream dietary guidelines on heart disease, cancer, and diabetes. A three-hour monologue from an acupuncturist who can’t read a forest plot is not “doing your own research” — it’s laundering pseudoscience through a microphone.