Nice one, Brian.
Some analysis of my own (with borrowings from others, including points summarised from the videos you shared):
First: What does the Rogan/Peterson video prove, or at least what was it intended to prove in the context of being posted in a vegan advocacy thread?
Let's assume the most adversarial intent, and put it in context.
The context is that not only do many people live happy and healthy lives as vegans, but significant numbers of people claim to both feel better and have become objectively healthier after going vegan, and, too, significant numbers of high-performance athletes are vegans. At the least (for vegan advocacy), then, we can say that veganism
can be not only healthy but beneficial and empowering, perhaps even optimal, for at least
some people.
In that context, the worst I can see that this video might prove is that a vegan diet is not healthy for
all people, that it causes those people extreme suffering and ill health, and that
only the opposite of a vegan diet can cure those people as well as provide them with optimal health - physically, psychologically, and cognitively. It might then be asserted that it follows from this that those people
ought to reject a vegan diet and adhere to its opposite.
A vegan advocate can challenge either the premise - the empirical health claim - or the (potentially asserted) conclusion.
Perhaps most people would find an effective challenge to the empirical health claim most convincing, so let's start with that.
In the video, "
VEGAN RESPONSE: Did Jordan Peterson's Carnivore Diet Cure His Depression? (JOE ROGAN PODCAST)???", GojiMan, who claims to be studying nutrition academically, makes the case that Jordan's health problems were caused by issues with his gut flora - a condition that he himself claims to have experienced, including similar symptoms to Jordan, and been cured from - and that eliminating fruit and vegetables is not an ultimate solution to such a condition but only minimises the various associated problems such as inflammation:
Is he right? He could be, but at the least this video shows that there are other possibilities to consider than that only a carnivorous diet can effectively cure some people's ill health.
Ryan from Happy Healthy Vegan in the video shared by Brian [edit: and Mic the Vegan in the second video shared by Brian, which I've just seen now] make some other potentially persuasive points here, namely that:
- A purely carnivorous diet is, on a mainstream view of nutrition, badly deficient in many nutrients. It is possible - likely even - that even if in the short term Jordan feels healthier, he is causing himself long-term health problems due to these deficiencies, at least without supplements.
- A purely carnivorous diet is likely to cause other health problems such as high cholesterol, diabetes, and low testosterone, as evidenced by Shawn Baker's blood test.
- A purely carnivorous diet is much more environmentally damaging than a vegan diet.
- The claim that certain populations, such as the Inuit, lived healthily from near-total carnivorous diets is questionable given their apparently short lifespans and the frequency with which they experienced heart problems. I have not looked into this question closely enough to have formed a confident personal opinion on it - empirical stuff like this is, I think, murky - but from my perspective it's at least a plausible assessment.
The potentially claimed conclusion - that people who can only thrive on a carnivorous diet
ought to do so - cannot follow without a hidden premise being true: the absence on the purely carnivorous diet of even worse harm than the personal ill-health which it supposedly cures. Vegan advocates such as myself argue that the death, suffering, and systemic exploitation and objectification involved in producing the meat for that diet, especially via factory farming, and not to mention the much greater environmental damage,
are much more harmful than that personal ill-health even
if that personal ill-health could only be cured by following a carnivorous diet.
So, however it was intended, I don't see this video as at all persuasive against veganism.