Joe Rogan Experience #2458: What Did Matt McCusker Say About Creatine, Diet Fads, Fiber, and Outrage Addiction?

TL;DR

Joe Rogan and Matt McCusker compare creatine dosing, vegan and carnivore experiments, fiber, fermented foods, health scares, and outrage-driven news. Rogan says a single 20-gram creatine dose upset his stomach, so he divides it into 10 grams in the morning and 10 at night. Their personal experiences expose how difficult it is to judge conflicting health claims, while their discussion of algorithms explains why modern anxieties feel relentless. Read on for the specific experiences and reasoning behind their conclusions.

Transcript

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Key Insights

• Split doses changed tolerability: Rogan distinguishes a total daily amount from the size of one dose. Although he discusses 20 grams per day, he says taking 20 grams at once got his stomach going. Dividing it into 10 grams in the morning and 10 at night lets him follow the same total while avoiding the reaction he experienced from a single dose.
• Gradual increases reveal reactions: Rogan recommends starting creatine at about 5 grams and working toward 20 rather than immediately taking the full amount. His reason is digestive tolerance, framed humorously as checking how the body responds. The approach reflects his own experience that the timing and concentration of a dose can matter even when the daily total stays unchanged.
• Sleep loss framed sudden aging: McCusker says he felt as though he aged immediately after having children, even joking that one might think he had personally given birth. Rogan points to lack of sleep as the likely cause and says it affected him too. The exchange supplies the context for why creatine enters the conversation rather than presenting it as an isolated supplement topic.
• Vegan eating produced an extreme: During roughly one month as a vegan, McCusker reports exceptionally large bowel movements about twice each day. He says the size and physical strain caused hemorrhoids. His account complicates the simple idea that more frequent elimination is automatically better, because the regularity he experienced came with an uncomfortable consequence that ended up defining the experiment.
• Kale smoothies cleared everything quickly: Rogan remembers beginning mornings with blended kale, garlic, apples, and other ingredients. He compares the digestive result to using a hose to clear leaves from rain gutters. This personal example supports the conversation's association between plant-heavy drinks, abundant fiber, and rapid elimination, while remaining an anecdote about what happened to him.
• Fiber regained importance for McCusker: After focusing heavily on protein, McCusker says he is back on the fiber train and now feels he needs it. He describes fiber as material the body does not process that helps push everything out. His position is shaped by competing experiences, since excessive output on a vegan diet and minimal output on carnivore eating both caused problems.
• Carnivore benefits faded after five days: McCusker says the carnivore diet initially felt good, but that positive period lasted only about five days. By approximately day 17, he had nearly stopped defecating and decided the experiment could not be good for him. He concluded that adding vegetables to the meat would have made the diet feel much healthier and more sustainable.
• Small output supports two interpretations: The carnivore discussion treats limited bowel movements in opposing ways. McCusker sees barely pooping and producing pellet-like waste as evidence that something is wrong. Rogan raises the alternative possibility that it means the body absorbed most of the food, leaving little residue. That disagreement captures why they find diet arguments confusing rather than settled.
• Microbiome claims remain uncertain: Fiber is presented as potentially feeding the microbiome and supporting organisms associated with the gut and brain. Yet neither speaker claims mastery of the evidence, and both openly acknowledge confusion. Their exchange preserves the distinction between repeating a proposed benefit and proving it, which is central to how they approach the broader fiber debate.
• Fermented foods become the compromise: Rogan describes eating a lot of kimchi and also eating sauerkraut, while McCusker agrees that fermented foods are supposed to be beneficial. Within their unresolved debate over meat and fiber, these foods function as a practical middle position. Rogan does not claim they settle the argument, but they are the foods he regularly chooses while uncertainty remains.
• The undigested-meat story collapses: The speakers recall an old claim that every man dies with a pound of undigested meat in his stomach, along with an exaggerated John Wayne version involving a huge quantity of beef jerky. They say the underlying claim apparently is not true. Its persistence illustrates how memorable bodily stories can survive even when the conversation ultimately identifies them as myths.
• Attention trains the outrage feed: Rogan and McCusker describe people becoming addicted to being upset by negative news that repeatedly labels someone terrible. Their mechanism is behavioral: a person searches for or engages with distressing material, and the algorithm responds by delivering more of it. The resulting feed can make outrage feel continuous because demonstrated attention becomes the signal used to select subsequent content.

Questions & Answers

Q: How should creatine be divided to reduce the stomach problems Joe Rogan experienced?

Joe Rogan says he takes 20 grams per day but does not consume all 20 grams in one dose. A single 20-gram dose got his stomach going, so he changed the schedule to 10 grams in the morning and 10 grams at night. He also suggests starting at about 5 grams and working upward while checking how the digestive system responds. The division matters in his account because it preserves the daily total while avoiding the concentrated dose that caused trouble for him.

Q: What happened when Matt McCusker tried a vegan diet?

Matt McCusker says he was vegan for about a month. During that period, he had unusually large bowel movements approximately twice a day. He connects the volume to all the fiber that his body did not process and says the size and strain gave him hemorrhoids. His experience shows why he treats high-fiber eating as more complicated than simply producing frequent bowel movements.

Q: Why did Matt McCusker stop the carnivore diet after about 17 days?

McCusker says he felt good for the first five days of eating carnivore. As the experiment continued, however, he nearly stopped defecating and saw small, pellet-like output when he did. By about day 17, he felt that the situation could not be healthy and ended the diet. He concluded that eating some vegetables with the meat would have made him feel like a much healthier person.

Q: Does the conversation conclude that fiber is necessary?

No, Rogan and McCusker present the need for fiber as a confusing, unresolved argument. One side says fiber pushes waste through the digestive tract and supports the microbiome, including organisms associated with gut and brain health. Carnivore advocates counter that meat is absorbed so fully that little residue remains, making fiber unnecessary. The speakers do not resolve those positions, but McCusker says he has returned to eating fiber and Rogan regularly eats kimchi and sauerkraut.

Q: Why do kimchi and sauerkraut matter in their diet discussion?

Rogan says he eats a lot of kimchi and also eats sauerkraut. He introduces these fermented foods while admitting that the competing claims about fiber, carnivore eating, and the microbiome are difficult to judge. They therefore serve as his practical balance while the larger nutritional question remains unsettled. McCusker agrees that these foods are supposed to be beneficial, but neither speaker presents them as proof that one diet camp is correct.

Q: Is the story about men dying with undigested meat in their stomachs true?

The conversation says that the story apparently is not true. Rogan and McCusker remember hearing that every man dies with a pound of undigested meat in his stomach. They also recall an exaggerated version claiming John Wayne had an enormous amount of beef jerky left inside him. Rejecting the story matters because it removes one dramatic claim from their attempt to understand whether meat remains stuck without plants to push it through.

Q: What health risks do they associate with The Conqueror and talc-based baby powder?

They discuss the 1956 John Wayne film The Conqueror as having been shot near a Nevada nuclear testing area. The existing account says a large portion of its cast and crew later developed cancer connected to radiation exposure. They also discuss a small cancer risk involving talc-based baby powder, particularly genital use and possible asbestos contamination because talc is mined near asbestos. The conversation notes mixed data and low absolute risk for an individual while connecting the concern to lawsuits, largely from women.

Q: How do news algorithms encourage outrage addiction?

Rogan and McCusker describe outrage addiction as repeatedly seeking the feeling of being upset about people or events. They say news is largely negative and often frames someone as a terrible person, which keeps audiences emotionally engaged. When a user searches for or interacts with that material, the algorithm treats the attention as a preference and supplies more of the same. This creates a reinforcing cycle in which engagement with upsetting content produces an increasingly upsetting feed.

Summary & Key Takeaways

• Appearance, aging, and lost sleep: Joe Rogan and Matt McCusker begin by joking about tables fitted with lights that flatten facial shadows, male comedians who filter photographs, and Netflix filtering promotional images for comedy specials. Rogan says he is 58 and almost 60, while McCusker says he has just turned 40. McCusker connects his sudden sense of aging to having children, and Rogan identifies lack of sleep as the problem that affected him.

• Testing a gentler creatine routine: The conversation shifts from sleep loss to creatine. Rogan says the suggested amount is 20 grams per day, but recommends beginning with 5 grams and gradually increasing it while watching how the digestive system reacts. Because taking all 20 grams at once upset his stomach, he now splits the amount into 10 grams in the morning and 10 at night. Their jokes about diarrhea lead into a wider discussion of digestion.

• Comparing fiber-heavy diet experiences: Rogan recalls morning smoothies made with kale, garlic, apples, and other ingredients, which rapidly cleared his digestive tract. McCusker then describes being vegan for about a month and having unusually large bowel movements roughly twice a day. He says their size and strain caused hemorrhoids. Although he attributes that experience to large amounts of unprocessed fiber, he has returned to believing that he needs fiber after previously concentrating mainly on protein.

• Questioning the carnivore argument: McCusker says he felt good during the first five days of a carnivore diet, but quit at about 17 days after nearly stopping defecation. Rogan explains that without fiber, bowel movements may be small because the body absorbs much of the meat. They consider the carnivore claim that fiber is unnecessary alongside the opposing view that fiber clears the digestive tract and supports the microbiome. Neither presents the debate as conclusively resolved.

• From old risks to digital anxiety: Rogan and McCusker reject the story that men die with undigested meat in their stomachs and mention the related John Wayne legend. Their discussion expands to the 1956 film The Conqueror, Nevada nuclear testing, asbestos contamination in talc-based baby powder, and cancer lawsuits. They then turn toward LED lights, overwhelming news exposure, and outrage addiction, arguing that algorithms observe what people seek and engage with, then repeatedly supply more upsetting material.