Key Moments
What Humans, Animals and Plants Tell Us About Consciousness | Michael Pollan
Andrew HubermanKey Moments
Plants and microbes may be manipulating human consciousness to ensure their own survival and proliferation, blurring the lines between host and parasite in a complex, co-evolutionary dance.
Key Insights
Plants exhibit 'sensience' by navigating mazes for nutrients and defending themselves against threats, suggesting a form of intelligence beyond simple reflex.
Anesthetics affect plants, like Venus flytraps, by inhibiting their behavioral responses, raising questions about a form of plant consciousness or 'sensience'.
Microbiota within humans may be the primary drivers of human behavior and desires, potentially using us as vehicles to spread and interact with more hosts.
Psychedelics can lead to ego dissolution, a loss of self, which can have lasting positive effects on one's relationship with their ego, but can also paradoxically lead to ego inflation.
Consciousness might not originate in the cortex as previously thought but rather in feelings registered in the brainstem, suggesting a broader range of conscious animals than conventionally accepted.
Both plants and humans manipulate each other in a symbiotic relationship: plants produce psychoactive chemicals to aid their propagation, while humans have 'outsourced' metabolite production to microbes.
The mystery of consciousness and the brain's role
The conversation opens by acknowledging the profound mystery surrounding consciousness. Despite advancements in neuroscience, the fundamental question of how brain matter generates consciousness remains largely unanswered. Some theories propose that the brain might not generate consciousness but rather 'channel' it, akin to a radio receiver tuning into an existing broadcast. This perspective challenges the dominant assumption that consciousness is solely an emergent property of brain complexity, highlighting the need for an open mind when exploring this complex phenomenon.
Beyond human senses: Plant intelligence and sensience
Michael Pollan introduces the concept of 'sensience' as a more basic form of consciousness that may be universal, even extending to plants. He highlights plant intelligence through examples like corn plants navigating mazes to find nutrients and plants reacting to the sound of caterpillars by producing defensive chemicals. Remarkably, plants also respond to anesthetics, losing their rapid behaviors like the Venus flytrap's closing mechanism. This suggests a level of awareness or response to their environment that blurs the lines of what we traditionally consider conscious activity. The ability of plants to sense gravity, pH, and nutrient gradients, and to possess more senses than humans, underscores their complex interaction with the world.
The 'self vs. other' as a foundational rule
A key principle explored is the fundamental distinction between 'self' and 'other,' which appears to be a foundational rule in biological systems, from single neurons to complex organisms. Neurons, for instance, follow simple rules to grow and connect, avoiding contact with other branches of the same neuron while seeking connections with different ones. This 'self-avoidance' creates intricate architectures. Similarly, plant roots can differentiate between related and unrelated plants, sharing resources with kin while competing with others. This ability to distinguish and interact appropriately with the environment is seen as crucial, forming the basis for more complex consciousness.
Microbes as master manipulators of human consciousness
A startling perspective emerges regarding the role of the human microbiome. Pollan suggests, citing his colleague Justin Sonnenberg, that the trillions of microbes within us might be the true drivers of our actions and desires. These microbes, existing for far longer than humans, may be using us as vehicles to promote their own survival and proliferation. They influence our moods, behaviors, and even our drive for social interaction and exploration, such as space travel. This idea challenges human agency, proposing that much of our 'higher order' thinking, creativity, and ambition could be orchestrated by our microbial inhabitants.
Psychedelics, ego dissolution, and collective consciousness
The conversation delves into the impact of psychedelics, particularly their ability to induce ego dissolution – a temporary loss of the sense of self. This experience, often profound and lasting, can lead to a greater perspective on one's ego, reducing its dominance in daily life. While not always permanent, it can foster pro-social feelings and a sense of connection. However, psychedelics can also paradoxically lead to ego inflation. The concept of collective consciousness is then explored, not as a singular 'one love' ideal, but as a more nuanced idea of interconnectedness and the potential for species to live in greater harmony, acknowledging individual self-interest while striving for common good.
Feelings as the origin of consciousness
A paradigm shift in understanding consciousness is presented, suggesting it might originate not from rational thought in the cortex, but from basic 'feelings' registered in the brainstem. This perspective, influenced by researchers like Antonio Damasio, posits that the brain's primary role is to maintain the body's homeostasis, and feelings like hunger, warmth, or pain are fundamental conscious experiences. This implies that a much wider range of animals, possessing brainstems, could be conscious. The body's communication with the brain, particularly through the vagus nerve, is predominantly from body to brain, indicating a powerful, often underappreciated, influence of somatic states on our mental experience.
The complexity of human-body communication
The intricate communication between the body and brain is highlighted, with 80% of the traffic flowing from body to brain. This communication is not always easily translated into language or conscious thought. Experiments show how physical states, like a calm stomach induced by ginger, can influence moral judgments, demonstrating the deep integration of physical sensations and cognitive processes. The idea that our feelings and perceptions are influenced by a vast array of internal signals, integrated over long timescales, suggests that our understanding of consciousness is still in its infancy, far from being fully decoded by language alone.
Redefining 'American food' and the future of consciousness research
The discussion touches on the cultural aspects of consciousness, particularly in the context of food and national identity. Pollan advocates for a redefinition of 'American food' to move away from unhealthy, ultra-processed options towards a healthier, more sustainable cuisine. He notes that while progress has been made in raising awareness, policy changes are crucial. The conversation also looks towards future research, with the possibility that AI might offer new insights into consciousness, or that quantum mechanics could play a role in explaining phenomena like non-locality and entanglement within the brain. The idea of consciousness as a field, rather than solely a product of the brain, and the potential fragmentation of consciousness into multiple components, are presented as avenues for future exploration.
Mentioned in This Episode
●Supplements
●Products
●Companies
●Organizations
●Books
●Concepts
●People Referenced
Common Questions
Neuroscientists have historically avoided the topic of consciousness due to its complexity and the career risks associated with it. However, the discussion is evolving, with some neuroscientists, particularly those with established reputations, now engaging with it more openly.
Topics
Mentioned in this video
A magnificent poet, farmer, and essayist who taught Michael Pollan how to write and think about certain things, particularly regarding humans' relationship with nature.
A French philosopher who was an exponent of filter theories of consciousness.
A Nobel laureate whose lab at MIT conducted experiments on memory encoding in neurons, showing unexpected results regarding temporal ordering.
Credited with influencing the fast-tracking of Ibagain approval by texting the president after doing a show on the psychedelic.
Discussed quantum computers and their simultaneous problem-solving capabilities, which could relate to quantum physics explanations of consciousness.
A philosopher and psychologist who wrote about varieties of mystical experience and the communication between feelings and brain, suggesting the brain labels emotions.
A philosopher who wrote a brilliant essay called 'What Is It Like to Be a Bat?' which provides a definition of consciousness.
Author of 'Fast Food Nation,' a book about the food industry.
Chair of neurosurgery at UCSF who studies speech and language, noted for his observation that all speech is 'shaped exhales.'
A colleague of Michael Pollan at Berkeley who studies awe and conducted an experiment showing how awe experiences diminish the sense of ego.
A food movement leader and organic farmer from Maine in Congress, who collaborated with Maha activists to strip a bill exempting pesticide makers from lawsuits.
A South African psychiatrist and neuroscientist, protege of Damasio, who supports the theory that consciousness originates from feelings in the brain stem.
A veteran credited for the progress in the psychedelic movement for veterans.
A biologist at Tufts who works with organoids and has shown that behaviors are not solely dictated by genes, creating xenobots that can learn and navigate mazes.
A researcher who verified that different cultures have varying levels of emotional nuance, with some having many words for specific types of sadness.
Author of 'Food Politics,' an influential book about the food industry.
A progressive farmer in Virginia who pioneered grass-based agriculture, rotating different species over grasslands to grow amazing food.
A neuroscientist who suggested consciousness begins with feeling in the brain stem rather than thought in the cortex.
Founder of MAPS and a visionary who deliberately reached out to the right-wing years ago to gain support for psychedelics, despite criticism.
Acknowledged for his amazing work in advocating for psychedelics.
Believed in filter theories of consciousness and talked about it in 'The Doors of Perception,' influenced by his mescaline experiences.
His lab at Scripps conducted experiments on memory encoding in neurons, similar to Tonegawa's, revealing perplexing results about temporal ordering.
Self-described 'knuckle-dragging Republican' who is a very bipartisan advocate for psychedelic medicine for veterans.
A big Trump supporter who contributed to Rick Doblin's organization, demonstrating Doblin's bipartisan outreach for psychedelics.
A colleague in psychology at Berkeley who suggests that consciousness might not be a single thing and could be broken into parts.
Mentioned for trying to open up protected lands and for the circumstances surrounding the fast-tracking of Ibagane and other psychedelics for medical approval.
A psychopharmacologist at Johns Hopkins who did initial work on psilocybin and suggested the only way to understand a habitually taken drug is to get off it.
A mathematician and philosopher who stated that 'the price of metaphor is eternal vigilance,' in the context of the brain as a computer metaphor.
A veteran credited for the progress in the psychedelic movement for veterans.
A book by Michael Pollan about how humans and plants co-evolved and collaborated to thrive.
A very influential book by Marian Nestle about the food industry.
An incredible book by Michael Pollan about food and nutrition, which he later wrote a new introduction for.
A book by Aldous Huxley where he discusses filter theories of consciousness, influenced by his mescaline experiences.
Michael Pollan's most recent book on consciousness.
A book by Michael Pollan that includes a chapter on caffeine.
A book by Eric Schlosser about the food industry.
Sponsor of the podcast, makes smart mattress covers with cooling, heating, and sleep tracking capacity.
A company that emerged from MAPS and is working to get MDMA approved for the treatment of trauma.
Sponsor of the podcast, makes water filters that remove harmful substances while preserving beneficial minerals.
Sponsor of the podcast, provides over 160 advanced lab tests to give a snapshot of bodily health, including heart health, hormone health, autoimmune function, and nutrient levels.
A company close to getting psilocybin approved for medical use.
A group that estimated over 200 million Americans are exposed to PFAS chemicals through tap water and over 122 million Americans drink tap water with high levels of cancer-causing chemicals.
An organization that put forward MDMA for the treatment of trauma, and from which the company Resilient emerged.
A society that promotes grass-based animal protein and has a large network of 'Maha Moms' passionate about clean food.
Ingredient in AG1 Pro that supports muscle strength, performance, and brain health.
A supplement taken to naturally reduce LDL cholesterol, based on Function Health test results.
Sponsor of the podcast, a blend of vitamins, minerals, probiotics, and adaptogens, with the new Pro formulation adding creatine monohydrate, calcium HMBB, and zinc carnosine.
Ingredient in AG1 Pro that supports and improves the lining of the gut.
Ingredient in AG1 Pro that supports muscle recovery and reduces muscle breakdown.
More from Andrew Huberman
View all 416 summaries
36 minEssentials: Optimal Protocols to Build Strength & Grow Muscles | Dr. Andy Galpin
148 minBest Tools for Gut Health & Weight Loss | Dr. Chris Thompson
32 minEssentials: How to Assess & Improve All Aspects of Your Fitness | Dr. Andy Galpin
170 minThe Art of True Happiness | Dr. Arthur Brooks
Ask anything from this episode.
Save it, chat with it, and connect it to Claude or ChatGPT. Get cited answers from the actual content — and build your own knowledge base of every podcast and video you care about.
Get Started Free