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Mikhaila Peterson Is Reinventing Medicine Badly

Jordan Peterson’s daughter experiments with fringe medical hypotheses which she monetizes every step of the way.

Are you looking for love but don’t want to explain why you’ve eliminated seed oils from your diet? The dating appmight be right for you. Made for MAHA followers, biohackers, and people who equate “chemical” with “toxic,” Primal Match is the latest commercial offering from Mikhaila Peterson, currently signing up interested parties for early access. (There’s a free tier but only the premium membership unlocks all features.)

Peterson rose to fame shortly after her father, the Canadian psychologist and reactionary public intellectual Jordan Peterson, who thoughtfor misgendering someone. (This was.) While her dad’s prominence came from his crusade against progressivism and his desire to teach young men to clean their room, Mikhaila’s was focused on food.

She had suffered from juvenile arthritis (and a slew of symptoms) and had allegedly cured herself by eliminating everything but steak and salt from her dietary regimen. Her carnivore diet, later renamed the Lion Diet, was the secret cure-all for chronic conditions that doctors were too incompetent or corrupt to heal. Even her dad’s refractory depression was supposedly obliterated by getting rid of pesky fruits, vegetables, and grains.

Taking a snapshot of what Mikhaila Peterson claims on her popular podcast at any point in time makes her look like a champion for the medically disaffected: she has figured out what ails them, and which expert can be trusted, and even sells you the solution.

But when we zoom out and watch her claims over time, it becomes obvious that what she is doing is attaching herself to a fringe theory, making money off of it, then moving on to the next one when her cure-all turns out not to have cured her after all.

The culprit is food

It started with the carnivore diet. All beef, all the time. Because the name sounded “socially weird,” sheas the Lion Diet. See, you need the strength of a lion to combat chronic diseaseԻto do it without the medical establishment, she explained.

I wrote about itnearly a decade ago. Mikhaila claimed “the beef thing” treated her juvenile arthritis, but it turns out thatwho receive the diagnosis go into remission within ten years. Very few of them, if any, cut out everything but red meat.

What about her dad’s “crippling, life-ruining depression” which he apparently has had? Beef cured it! In a 2018 appearance onThe Joe Rogan Experience, this is how Jordan Peterson himself rattled off the miracles of his family’s restrictive diet. When he first switched to eating “cucumbers, lettuce, broccoli, chicken, and beef,” hehe lost fifty pounds, stopped snoring, started waking up with a clear mind, lost the floaters in his eyes, and needed less sleep to function—and he was able to say goodbye to his psoriasis, the numbness in his legs, and his decades-long gum disease. When he finally only ate steak and salt, his anxiety also decreased dramatically and he no longer needed his antidepressants. “Depression is gone,” he told Rogan.

The Joe Rogan Experienceonly gets parts of its views on YouTube. On that video platform, thiscurrently has over 24.6 million views.

I understand, from personal experience, trying to figure out a weird affliction by experimenting and throwing spaghetti at the wall. To do so in the privacy of one’s own life is reasonable, sometimes fortuitous, but possibly misguided—the siren song of dangerous quack treatments can be hard to resist. But to do it publicly and to profit from one’s mistaken discoveries is much more harmful.

In 2018, the all-beef diet had cured Jordan’s depression, tens of millions of people learned. But in 2026, Mikhailathat her dad’s mental woes had not vanished: “it’s not the kind of depression you can normally diet and exercise away.” The carnivore diet had helped, she now claimed, but the much-vaunted magic bullet had been an exaggeration. It hadn’t even worked for her: in 2020, she thought beef was making her sick, so shestopped eating beefԻ. Why? She hypothesized—and so much of what she does is hypothesizing and marketing her unproven conjectures—that North American beef wasagedmore and the ageing of the beef somehow made her sick. Croatian beef, eaten while on a trip, apparently wasn’t aged and she could digest it fine, but since she didn’t live in Croatia, she had to make changes. So, her exceptional diet was in like a lion, out like a lamb.

It didn’t stop Mikhaila from making money from the Lion Diet. Her podcast has sponsors, like Brooklyn Biltong, a jerky alternative consisting in tender steak slices in colourful pouches perfect for snacking, and Ancestral Supplements, the beef organ supplement company started by the Liver King, whoseԻagainst Joe Rogan have been well documented.

Aof the carnivore diet by Practice-based Evidence in Nutrition (PEN) lists the lack of adequate studies, the overreliance on testimonials and self-reports, and its low levels of magnesium, calcium, vitamin C, and thiamin (and occasionally iron, iodine, potassium, and folate as well), with fibre intake being considerably lower than what is recommended and sodium well above. The carnivore diet will never be in the top 10 eating plans recommended by dietitians, and its claim to help people with weird symptoms is based on anecdotes. Even Mikhaila Peterson herself has had to reevaluate her appreciation of it.

If food wasn’t solely responsible for her ill health, and a restricted diet hadn’t cured her, what exactly was the bugaboo?

The culprit is mould

The answer, at first, was her breast implants, which. Then, it was theshe experienced while living in Tennessee, giving her brain fog. Subsequently, she moved to Miami in 2022, but the ill health did not abate. It turns out there was mould in her Florida house, which forced her to completely renovate it, sell it, and move to Arizona to undergo “mould treatment.” (I will be using the Canadian/British spelling; it is written “mold” in the United States.)

And so she took to her microphone to denounce mould as an invisible cause of illness. She created the website biotoxin.com to share papers linking mould to every conceivable disease and condition—autism, migraine, pain, even Parkinson’s disease. Sure, you can find individual studies showing preliminary evidence that there might possibly be some kind of link between mould exposure and, let’s say, dementia; but this should not be understood as “mould causes dementia.”

Despite this, in, she plugs a US$ 300 kit that analyzes household dust for mould and a US$ 342 kit that tests for toxic molecules produced by mould. Its maker’sreminds anxious consumers that mould can be “associated with” cancer, infertility, and multiple sclerosis. A different kit was subsequently endorsed by Mikhaila: instead of paying once, this one is, of course, a. And it comes with supplements and a peptide to rescue your body from mould exposure.

If we pull ourselves out of this paranoid morass, however, we will realize that mould is not The One True Cause of All Diseases, just like the carnivore diet was not a panacea. “Mould” and “mildew” are colloquial terms that refer to visible fungus growing on indoor surfaces. In humid conditions, mould will easily reproduce and release acids and enzymes that will break down decaying material. They play a key role in ecosystems, and some of the molecules they produce have been beneficial to us, like penicillin.

The mere presence of mould in a house, and any symptom felt while living in this house should not, willy-nilly, be attributed to the mould. The idea that “dampness means mould and mould explains all of my symptoms” is ill-judged. Dampness fosters mildew, yes, but it also attracts bacteria and other microorganisms, Իtheycould be the culprit behind an illness—or something else entirely.

The vast majority of species of mould, meanwhile, do not make us sick; the few that do are able to cause illness. They can infect us directly; they can cause or aggravate allergies and asthma; they can act as an irritant; and in rare cases can create toxic reactions. But because of media coverage in the 1990s of, people began to associate any vague symptom—brain fog, fatigue, dizziness—to hidden, toxic mould.

Meanwhile, testing to see if mould is responsible for a specific health symptom is a lotthan direct-to-consumer companies would have you believe. Sampling dust for fungi will not be representative of what is breathed in, and sampling the air only once is meaningless. In fact, you can detect fungus spores in the air of almost any house. Blood tests that rely on immunoglobulin G (IgG) to prove exposure to mould are abused: given that mould and its byproducts are everywhere (including in cheese, soy sauce, and many other ingredients), we have all been exposed, and most of us will test positive on one of these tests. While mildew is a problem in buildings, its impact on human health is a case of people making a mountain out of, well, a mould hill.

But mould was still not the end of the line for Mikhaila Peterson. Now, it’s mitochondria.

The culprit is mitochondrial dysfunction

Mitochondria are real: they are the little factories inside of our cells charged with turning our food into energy. Some people have actual mitochondrialdiseasesbecause a key component inside their mitochondria is mutated. A much vaguer phenomenon known as mitochondrialdysfunctionis also real, but it has beengrossly exaggeratedand serves as one of many boogeymendu jourfor the Make America Healthy Again movement. Mikhaila Peterson had to jump on the bandwagon, and her first mention of it on her podcast appears to be from early 2023. So, now, this is her main culprit.

In trying to figure out why she is sick, she has jumped from one fringe theory to the next, and recently she has had guests on that have attempted to cobble them together into some sort of comprehensive health model that would raise the eyebrows of most doctors and scientists.

Last April, Chris Masterjohn, who holds a doctorate in nutritional sciences,on Mikhaila’s show. Juvenile arthritis, which Mikhaila had, can be treated by medication that blocks an inflammatory mediator, TNF-alpha, but this apparently causes mitochondrial dysfunction because TNF-alpha is both badԻgood. With regards to the carnivore diet helping, eating red meat means consuming a lot of carnitine, a molecule that allegedly rescues your faulty mitochondria. And mould produces toxins, and these toxins actually target the mitochondria. It’s all connected... if you force these connections without proving them scientifically.

This type of explanation will be appealing to chronically sick patients who have never done biomedical research. It strings technical terms they are unfamiliar with into a story that sounds plausible. It’s like a Rube Goldberg machine, or one of those messages spelled out on a fridge with word magnets: first this, then that, then that, and finally this.

I want to show how easy it is to construct these stories. I opened my old molecular biology textbook (Molecular Cell Biology, 4thedition, by Lodish and others) at a random page (769, if you’re playing at home) and imagined a theory I could promote on Mikhaila’s podcast based on the information that was on that page. My textbook reminded me that myosin is a molecular motor inside our cells and that it moves, like a train, on actin filaments. And funnily enough, you can break myosin down using an enzyme called papain. In what is papain found? The papaya fruit.

I could now use this knowledge to go on her podcast and, with adequate confidence and calm in my voice, promote my papain-free diet, sure to cure brain fog and chronic fatigue and likely to help you build muscles. Myosin, after all, is crucial to cell function. You don’t want it to break down, now do you? I might also be able to find a molecule that blocks the action of papain and sell it as a supplement so that people could continue enjoying papaya without feeling sluggish. And if the papaya-eating masses are not a big enough consumer base, I could add that other fruits contain similar enzymes that break down—read “damage!”—the essential proteins we need: pineapples, figs, kiwis, mangoes. All the more reason to platform me and my theory.

This is how you take molecular research, grossly misinterpret it, and turn it into a profitable health crusade.

You don’t need to be a scammer—someone who lies for money—to do this. You simply need to fail to understand how scientific research works and have enough distrust of mainstream medicine to latch onto seductive alternatives. Armed with this new, secret knowledge, you monetize it because you have bills to pay and you think you are genuinely helping people.

The sickest influencers around

Mikhaila Peterson’s podcast is a fascinating intersection between personal health and pseudoscience communication. Her approach is to bypass actual consults; she just invites whichever “expert”—a chiropractor, a martial arts champ who healed himself from parasites, the CEO of a for-profit company—she wants to talk to about her health onto her podcast, and the episode becomes a free appointment. When she was looking for an expert on mould, she, “instead of waiting three months to talk to someone, I can just say, do you want to come on the podcast?” A couple of years ago, sheto her guest—a stem cell doctor to the stars—that she didn’t sweat properly in a sauna. Could this be due to mould? Her guest said yes, emphatically, and recommended she buy a sweatsuit online. She is filming her appointments with questionable health coaches and spreading the pseudoscience to anyone watching.

Her podcast sows doubt in medicine, in vaccines, in conventional science. The multiple times she has been pregnant have been fertile ground for her to discuss what her babies will and will not be having. The vitamin K shot to prevent bleeding in a newborn? Mikhaila, especially sincemaybevitamin K levels aresupposedto be low in a baby—an argument that hints at “Mother Nature knows best” or “God doesn’t make mistakes.” I spoke to an actual pediatrician, Dr. Clay Jones, who finds himself trying to convince young parents not to skip the vitamin K shot, discussions which he says are morally fatiguing. “In the history of modern public health measures,” he wrote to me, “there are very few that outmatch the safety and potential for preventing loss of life and lifelong disability than intramuscular vitamin K for newborns.” Mikhaila hums and haws over preservatives in the shot, even though vitamin K shots exist without them. Her alternative is doses given by mouth, but Dr. Jones tells me that breakthrough bleeding can still occur with those. Aof over 2,000,000 births in Sweden shows that refusal of the vitamin K shot is on the rise, and with it comes a higher risk of bleeding episodes, including bleeding inside the skull.

Because vitamin K is typically administered with a syringe, it has erroneously been lumped under the category “vaccines” by people who have fallen for or are themselves promoting harmful misinformation on immunizations. This kind of anti-medicine streak, combined with the Petersons’ complicated history dealing with mental illness and psychiatric medication, has turned Mikhaila into a campaigner against psychiatric drugs, like antidepressants. This crusade is echoed in the proclamations made by Robert F. Kennedy Jr, the anti-vaxxer who is in charge of healthcare in the United States.

I asked Dr. Tyler Black, a clinical assistant professor in the Department of Psychiatry at the University of British Columbia, about many of the allegations Mikhaila Peterson made against psychiatric drugs. While affluent, white, suburban patientscanbe overtreated with them, there are many who are undertreated for mental health issues: rural, non-white, and immigrant people, as well as those living in urban centres. There is no current evidence that SSRIs, used to treat depression and anxiety, cause mitochondrial damage. Meanwhile, psychiatrists have realized in the last 25 years that some drugs can increase suicidality in youth; that sexual side effects are real and need to be considered; and that stopping such drugs should not be done cold turkey, and family doctors are catching on. But Black personally feels—and I agree—that what we are witnessing here is run-of-the-mill anti-psychiatry being laundered in mainstream conversations.

I need to make one thing clear: Mikhaila Petersonshouldtry to figure out what is making her sick. I am not advocating for her to snuff out her inquisitiveness. Dealing with strange symptoms for which no cause is identified is immensely frustrating. The problem arises when you don’t understand the all-too-important winnowing process that early, exciting scientific findings must go through before new therapies are approved. What looks good in mice rarely pans out in humans. “Eureka!” is most often followed by a disappointed “... oh.” When you do not understand this crucial fact about scientific research and you have a large platform, you end up misinforming your audience.

And with the Petersons, we are far from influencers who sell us health productsbecausethey look like the picture of health and we want to buy their secret. Mikhaila Peterson speaks ofshe experienced as a teenager and again after moving into a mould-infested house as an adult. The example she gives is of looking at a knife and her mind going “KNIFE!” She has become her dad’s fiercest health advocate and influencer, and yet an enumeration of Jordan’s woes in the last decade alone is stupefying and is always framed as the worst possible version of the condition. Anxiety, depression, benzodiazepine withdrawal syndrome (for which Russian doctors put him in an eight-day coma followed by a month-long stay in an ICU), bilateral pneumonia, sepsis, temporary loss of motor skills, COVID-19 infection, chronic inflammatory response syndrome (which is), polyneuropathy, myopathy, akathisia, pulmonary hypertension, severe reactions to most medications, an “overwhelming sense of impending doom” and complete sleeplessness for a month due to drinking apple cider and, according to Mikhaila, spiritual attacks. It seems like the all-beef diet was not exactly the bee’s knees.

So, when you see Mikhaila Peterson standing behind a new health product, a thick coating of credulity is needed to swallow that pill. One of those pills is, a supplement “made” by Mikhaila herself. It is alleged to prevent hangovers—its website reads “the gold standard for post-celebration replenishment,” borrowing a misused expression from the Kennedy health department. Its main ingredient is dihydromyricetin, same as in Thrive+, an after-alcohol aidI wrote about in 2018. There isit helps prevent hangovers.

Maybe we should just listen to Mikhaila’s own words. In 2021, shethat she used to be very much into hard scientific evidence, looking for peer-reviewed papers. “And now, I have no idea what’s true anymore,” she concluded before chuckling.

Take-home message:
- In trying to figure out what is making her sick, Mikhaila Peterson has publicly promoted misguided notions regarding the carnivore diet, mould, mitochondria, and psychiatric drugs.
- Her podcast is a way for her to get free appointments with people she mistakenly regards as health experts, and she monetizes it by receiving sponsorships from companies selling beef organ supplements and mould detection kits.
- She regularly promotes doubt in medical doctors, vaccines, and a number of safe and effective interventions like the vitamin K shot given to newborns.


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