Andrew HubermanWhat Humans, Animals and Plants Tell Us About Consciousness | Michael Pollan
Andrew Huberman
The Mystery of Consciousness 0:00
Michael Pollan opens by saying that despite deep study, no one truly knows how brain matter generates consciousness, or even if it does. He raises the possibility that the brain might not generate consciousness at all but instead channel it, comparing the idea to a radio or television receiver picking up something like electromagnetic waves rather than producing it. He does not claim this is true, but says the experience of researching consciousness left him unwilling to dismiss such ideas, since the common assumption that consciousness simply emerges from brain complexity does not hold up as well as people think.
Introducing Michael Pollan 1:04
Andrew Huberman introduces Michael Pollan, the author of How to Change Your Mind, The Botany of Desire, The Omnivore's Dilemma, and most recently A World Appears, a book about consciousness. The two discuss Pollan's admiration for the writer and farmer Wendell Berry, who had recently died. Pollan describes how Berry shaped his thinking, especially the idea that humans have a legitimate quarrel with nature and must act within it rather than simply observe it, a lesson Pollan first applied while trying to manage weeds and pests in his own garden.
Defining Consciousness and Sentience 6:30
Pollan explains that consciousness is the one thing we know with total certainty, since everything else we understand is filtered through it, yet it resists clean definition. He offers subjective experience as a working definition, noting a toaster lacks it while he questions whether AI has it. He cites philosopher Thomas Nagel's 1970s essay on what it is like to be a bat, arguing that if there is something it is like to be a creature, that creature is conscious. Pollan separates sentience, a basic awareness of one's environment shared even by plants and single-celled organisms, from full consciousness, which adds self-reflection and emotion.
Plants Sensing Their World 10:01
Pollan describes striking findings from plant intelligence research. A corn plant can solve a maze, sending roots along the fastest path toward a patch of ammonium nitrate. Plants react to recordings of caterpillars chewing by sending bad-tasting chemicals to threatened leaves, and they respond to the sound of running water by growing roots toward it. He notes plants have roughly twenty senses compared to human's five or six, including the ability to sense gravity and pH. Oddly, plants respond to the same anesthetics used on humans, as shown when a Venus flytrap under xenon gas stops closing on insects, raising the question of what exactly is being lost, which Pollan calls sentience rather than consciousness.
Self versus other in nerve cells 16:30
Huberman raises the idea that consciousness might start with a simple ability to tell self from other, something already present at the cellular level. Nerve cells grow by a basic rule: extend outward, connect with as many other neurons as possible, and recognize which branches belong to you versus another cell. Dendrites and axons use a process called self-avoidance, branching away whenever they sense they are too close to a branch from the same neuron, which produces the intricate architecture of the brain. Pollan points out that tree roots follow a strikingly similar logic, showing how simple rules can generate immense complexity without any need for thought.
Consciousness without a self 19:31
Pollan explains that self and other is an important building block of consciousness, but the self is really its most elaborate expression, not a requirement. Meditators and people on psychedelics report consciousness without any sense of self, and Pollan suggests everyone experiences a version of this each morning, in the brief disoriented moment before you reconstitute who and where you are. He shares that this fits with long-standing Buddhist observations that consciousness does not have to be organized around a self at all.
Plants sensing and manipulating us 21:31
Pollan describes people in the plant medicine community and even gardeners, like his own mother, who feel a real, perhaps energetic connection when talking to or tending plants. He recounts his own psilocybin experience of feeling his garden plants were conscious and returning his gaze. He then turns to how domesticated plants have shaped human behavior through trial and error over evolutionary time rather than intention, citing corn spreading because it met human needs and cannabis spreading worldwide because it produced THC. Coffee, tea, and catnip show a subtler strategy: rather than killing predators outright, these chemicals alter the mind or dull appetite, which avoids provoking resistance and keeps the plant safe, as Pollan illustrates with his cat Frank repeatedly forgetting where the catnip plant was.
Dogs, wolves, and human distinctiveness 29:00
Pollan extends the same logic to dogs, noting that wolves which were patient and gentle enough to get scraps from humans gradually became domesticated, a strategy so successful that dogs now vastly outnumber the roughly 50,000 wolves left in the country. He stresses that none of this requires self-awareness, since plants and dogs are simply following rules wired into their genomes to seek resources and avoid pain. Humans, by contrast, have self-awareness and the ability to mentally time travel into futures they are not even part of. Pollan offers an evolutionary explanation for why this awareness exists at all, suggesting it arose because humans live in complex social groups where anticipating another person's thoughts and actions has real survival value.
Xenobots and Cognition Beyond Genes 31:00
Michael Levin, a biologist at Tufts, builds tiny creatures called organoids and argues that evolution produces cognitive beings skilled at solving novel problems, not just genetically programmed behavior. His work downplays the importance of genes and even neurons, showing that memory can reside outside neurons, in bioelectric fields held by groups of cells, much like the immune system operates. His xenobots, made from tadpole skin cells that clump into a new organism lasting a week or two, repurpose cilia for locomotion and can be conditioned to navigate mazes, despite nothing in their genes encoding those instructions. This has pushed biology into strange territory, and the word instinct, once common, is rarely used anymore.
Instinct, Environment, and Higher Brain Function 33:00
Cesar Milan, the dog whisperer, grew up in poverty where death was common and resources scarce, and he described how that environment sharpens instincts about safety and builds an unusual sensitivity to people and animals. This contrasts with more affluent societies, which offer buffers that dull those instincts. From a neuroscience view, the brain has purely autonomic parts controlling things like heart rate, alongside prefrontal cortex functions that let humans control impulses, think across past and future, and build technology. Calling this higher order feels unfair, since someone raised in Cesar's environment might survive better there than someone with more prefrontal reliance.
Microbiota and the Question of Human Purpose 34:30
A colleague at Stanford, Justin Sonnenberg, studies the microbiome and its influence on brain health, mood, energy, and behavior. He points out that microbiota proliferate every time people shake hands, kiss, or exchange money, raising an unsettling possibility that human ambitions, from space travel to politics to war, might simply be microbiota driving people to interact and spread them further. This thought is only possible because of excess prefrontal cortex real estate, the same faculty that also produces symphonies and spaceships. Pollan responds that the relationship runs both ways: humans have outsourced production of chemicals like glutamate, GABA, serotonin, and short-chain fatty acids to bacteria, meaning humans manipulate bacteria as much as bacteria manipulate humans, making it a mutual, two-way arrangement rather than pure domination. Space food, being sanitary and processed, would be hostile to bacteria, suggesting a humorous reason humans might never comfortably colonize Mars.
Meaning, the Prefrontal Cortex, and Shifting Loyalties 40:31
Part of the prefrontal cortex's function is assigning meaning to things, such as a personal feeling tied to a Wendell Berry poem, something tied closely to memory. It remains unclear whether other species do this, though dogs, cats, apes, and perhaps elephants might. A nature documentary scene illustrates a related idea: two male lions fighting to kill each other suddenly unite against attacking hyenas when one is threatened, showing the same aggressive circuitry redirected once the sense of "us" expands to include the rival. This shows the definition of self versus other can shift dynamically depending on context.
Consciousness Beginning in Feeling, Not Cortex 42:30
For centuries consciousness was assumed to be a cortical phenomenon, exclusive to humans, until the first mirror test on a chimp around 1970 suggested other primates might be conscious too. A different line of research, starting with Antonio Damasio in the 1990s and continued by South African psychiatrist and neuroscientist Mark Solms, argues that consciousness begins not with thought in the cortex but with feeling in the brain stem. The body communicates with the brain through homeostatic feelings like hunger, warmth, cold, or itch, and the cortex only gets involved afterward, helping translate a feeling like hunger into a plan for finding food. If this is right, many more animals qualify as conscious, since brain stems are far more common than cortices, and evidence comes from children born without a cortex and decorticated animals that still show behavioral signs of conscious experience, such as with pain. This does not resolve who or what is actually feeling, and Damasio's claim that feelings are simply spontaneously conscious is acknowledged as an unsatisfying answer.
AG1 Pro Sponsor Segment 47:00
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Feelings, Language, and the Body 48:30
The conversation turns to how people experience emotion differently, with some describing themselves as thinking "in feels." Lisa Feldman Barrett's research comes up, noting that some cultures, like Japan, have highly specific words for emotional states, such as the particular sadness of a bad haircut, which helps people avoid vague statements like calling themselves depressed when they are only feeling low. Children illustrate this gap between bodily signal and language: when they melt down, they cannot yet tell whether they are hungry or tired, and parents have to teach them the words. The body's signals to the brain are described as just as precise as the brain's own networks, roughly eighty percent of vagus nerve traffic runs from body to brain rather than the reverse, but human language, built from things like shaped exhales, has not caught up to interpreting that traffic, especially outside extremes like pain or rapture. There is also a question of time scale, whether bodily signals reflect not the present moment but an integration of sensations across many organs over many hours.
Ginger, Disgust, and Moral Judgment 55:00
An experiment on moral disgust showed that people given powdered ginger, which calms the stomach, judged morally repellent scenarios, such as incest or eating one's dog, less harshly than those given a placebo. This suggests moral judgment passes through the digestive system, reinforcing that mind and body are far more integrated than commonly assumed, and that separating brain from body may be the wrong approach entirely.
Rethinking Collective Consciousness 59:01
Discussion shifts to the vague, decades-old idea of collective consciousness and "one love" from the 1960s counterculture, which failed to produce lasting peace because people remain fundamentally self-interested until their own needs are met. A more honest version would acknowledge individual self-interest while still seeking cooperation, rather than assuming psychedelics alone could dissolve ego and unify everyone.
Ego Dissolution on Psychedelics 1:00:31
High-dose psychedelics can produce either ego dissolution or, in some cases, ego inflation. Pollan recounts his own experience on high-dose psilocybin of seeing himself explode into a cloud of blue post-it notes that coalesced into a pool of blue paint, observed with total equanimity from outside himself. With ego set aside, he merged completely with an unaccompanied Bach cello suite being played by his guide, becoming the music rather than listening to it, an experience he describes as leaving a lasting sense of diminished self afterward.
Ego dissolution and awe 1:03:04
Pollan describes how psychedelic experiences of ego dissolution give people a new perspective on their own ego, letting them notice when it becomes too critical, aggressive, or self-interested. He notes meditation can produce a similar effect, though it takes more sustained work. He points to research by Berkeley colleague Dacher Keltner, who studies awe and found that after an awe-inducing experience like river rafting, people drew themselves as stick figures about a third smaller than before, showing how awe shrinks the sense of self in a way that feels good and is prosocial.
Where consciousness actually comes from 1:05:00
Pollan admits science still cannot explain how brain matter produces consciousness, if that is even what happens. He raises the alternative idea that the brain might simply channel consciousness, like a television receiving a broadcast rather than generating the picture itself. He also mentions panpsychism, the idea that even particles in a table might carry a tiny bit of consciousness that combines into beings like us, and notes that neuroscientist Christof Koch, once a committed materialist, became convinced after an ayahuasca experience that consciousness exists outside the brain. Huberman and Pollan discuss filter theories of consciousness, associated with Henri Bergson and Aldous Huxley, which hold that the brain acts as a reducing valve admitting only a small trickle of a much larger field of consciousness, much as our senses only detect a narrow slice of reality compared to a honeybee seeing ultraviolet light or a pit viper sensing heat.
AI, memory, and unresolved neuroscience 1:13:32
After a sponsor break for Function, the conversation turns to whether building conscious AI could reveal what consciousness actually is. Pollan argues machines likely cannot have real feelings because feelings may depend on having a vulnerable, mortal body, and warns that treating the brain as a computer is a flawed metaphor, since brains lack any real hardware-software split and store memories across distributed regions that physically change with experience, unlike most computers. Huberman then raises an unresolved puzzle from labs at MIT and Scripps showing that neurons tied to a learned behavior produce the same behavior even when replayed backwards or all at once, undercutting the idea that exact sequence order is what matters.
Neurons and the memory puzzle 1:18:30
Building on the earlier discussion of memory experiments, the point is made that the old idea of neurons needing to fire in a strict sequence to encode a memory has been disproven, since scrambling the order of firing still produced the same memory in those experiments. It turns out that any given neuron takes part in many different memories at once, which is efficient but also deeply puzzling. Despite decades of impressive brain research, there is still no real understanding of how the brain encodes experience at this basic level, and that gap is treated as a serious open problem.
A speculative nod to quantum ideas 1:20:32
Huberman raises the idea that this simultaneity might resemble a quantum effect, recalling a talk by Michio Kaku on quantum computers solving problems all at once rather than step by step. Pollan responds that quantum mechanics already produces strange effects like entanglement, where separated particles affect each other, undermining ordinary ideas of locality and realism that biology mostly ignores. He suggests that although quantum effects have been dismissed in the brain due to its warm, wet environment being unlike the near-absolute-zero conditions quantum computers need, the coming decades may bring serious attempts to connect quantum physics with the creation of consciousness.
Childhood roots in the garden 1:22:30
Asked about his personal history, Pollan traces his connection to nature back to a watermelon he planted by accident around age four or five on Long Island, forgetting about it until it grew into a football-sized fruit he proudly tried to show his mother before dropping it. By age eight he had his own small garden he called a farm, selling strawberries to his mother in a Dixie cup. He explains that gardening, unlike admiring nature from a distance, puts you in an active relationship with it, forcing decisions and revealing that plants have their own interests you must satisfy to get what you want, an insight that shaped his first book and his later view of the garden as a better laboratory for thinking about nature than the shrinking, already-protected wilderness.
Wilderness, hunters, and behaving in nature 1:25:30
The conversation turns to anger among hunters and outdoorsmen over attempts to reopen protected lands, with Pollan noting that hunters like Teddy Roosevelt were historically among America's great conservationists. He argues that beyond simply protecting the small fraction of land still counted as wilderness, society needs to learn how to behave responsibly in the vast majority of landscape that falls between the extremes of untouched nature and land already exploited by the marketplace.
Writing hope instead of only warning 1:31:01
Pollan reflects on why The Omnivore's Dilemma resonated so widely compared to other critical food books like Fast Food Nation, suggesting that those books focused on what not to do while his aimed at a hopeful, loving relationship with food. He describes fighting to keep a short passage on grass-fed, sunlight-based beef in a long, dark New York Times piece about industrial beef production, and being gratified weeks later when a butcher told him six customers that week had asked for grass-fed beef. He values writing that gives readers a sense of agency rather than leaving them feeling like victims of large systems, and identifies himself as fundamentally optimistic, tracing part of that instinct to having been the oldest of four children who took on responsibility at home because of his father's alcoholism.
Progress on Food and Psychedelics Compared 1:34:01
You hear Pollan reflect that after mastering a subject as a journalist, it becomes dishonest not to say where things should go, and he admits the food system remains as broken as when he wrote Omnivore's Dilemma, still built on corn and soy that fuel ultraprocessed food. He contrasts this with psychedelics, where progress has been faster because opposition has been thinner, and he credits figures like Rick Perry, a self-described knuckle dragging Republican who champions ibogaine for veterans with PTSD, for building rare bipartisan momentum.
America Never Had Healthy Food 1:37:30
The conversation turns to the idea that classic American food, fried chicken, hot dogs, mac and cheese, cotton candy, was never healthy to begin with, unlike older European food traditions. Pollan argues America never really had a food tradition until fast food became it, leaving people vulnerable to marketing once their inherited food cultures were stripped away by immigration. He notes that changing eating habits is hard, and that policy still makes bad food cheap, subsidizing corn that becomes high fructose corn syrup while also funding diabetes treatment, which he calls insane and costly.
RFK Jr, Maha Moms, and Farm Cuts 1:41:32
Pollan says the current administration talks about healthy eating but isn't acting on it, pointing to the big beautiful bill cutting farm to school programs and regenerative agriculture funding while pesticides get deregulated. The one real change, getting food companies to voluntarily drop some cereal dyes, he considers minor. He credits RFK Jr. with surfacing a network of mothers, the Maha Moms, tied to the decades old Western Price Society and grass based farmers like Joel Salatin, who drove long distances for clean food and later helped strip a pesticide liability exemption out of a bill alongside Congresswoman Shelley Pingree.
Ibogaine, MDMA, and Rogan's Role 1:47:30
Attia and Pollan discuss why ibogaine, a psychedelic almost nobody uses recreationally and one never tested in university trials, is on track to reach approval before MDMA or psilocybin. MDMA, developed by a company called Resilient, was previously rejected but has resubmitted data and is now fast tracked, while Compass Pathways' psilocybin is also considered close. Pollan explains the fast track push traces back to Joe Rogan texting the president after covering ibogaine, with Trump acting to keep favor with the so called manosphere, prompting Pollan to say Trump is doing the right thing for the wrong reasons.
Psychedelics going mainstream soon 1:49:31
Pollan expects psychedelics to be approved as medicines soon, and calls it an earthquake moment, because the public will suddenly see drugs once viewed as dangerous now labeled as medicine. People outside the small community that has studied psychedelics for a decade will start asking whether these substances are right for themselves, their kids, or their parents. He compares this to cannabis, which was once considered very safe but, as use spread, revealed problems like addiction and psychosis. Some people, such as those prone to psychosis or with heart issues, should stay away from psychedelics entirely, and a lot of public education will be needed. Still, he stresses the real potential, having interviewed many people whose addictions, depression, and OCD were transformed, and argues mental health badly needs new tools since existing ones often fail.
Early risks of speaking out 1:52:00
Pollan reflects on how nervous he was publishing How to Change Your Mind, where he described his own psychedelic experience, half expecting police at his door. He credits good timing, being early enough to matter but not so early as to face real legal danger, and praises Tim Ferriss for similarly risky, hard work pushing psychedelic research forward.
Quitting caffeine, an experiment 1:52:32
Pollan describes writing about quitting caffeine, a chapter later included in This Is Your Mind on Plants. Psychopharmacologist Roland Griffiths, who also launched early psilocybin research at Johns Hopkins, told him the only way to truly understand a habitual drug is to stop taking it completely, which led Pollan to attempt a caffeine fast. His addiction began around age eight or ten, sharing morning coffee with his often-absent father. Quitting brought flu-like symptoms, poor focus, and a strange sense of not feeling like himself even once the withdrawal passed; he stayed off caffeine for about three months. His first cup back felt like the most powerful drug experience of his life, better than any psychedelic, giving him a burst of energy to clean closets and tend the garden, though a second cup felt far less special. He tried limiting himself to coffee only on Saturdays, which worked until a work deadline pulled him back to daily use. He notes caffeine offers real health benefits, including help with Parkinson's and lower blood pressure, up to about seven or eight cups a day, and calls it a great focus drug, essentially cocaine without the problems, while stressing that drugs are not simply good or bad but shaped by context.
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