Polyvagal Theory: Why You Feel So Anxious All The Time - Dr Stephen Porges
In a Nutshell
Our physiological state determines our capacity for connection, curiosity, and resilience, with anxiety reflecting a nervous system locked in defensive mode rather than external circumstances. Polyvagal theory explains that mammals evolved a specialized vagal system enabling social engagement and co-regulation, where signals like prosodic voices and smiling faces directly influence our physiology and ability to access higher-order capacities. Recovery requires interventions that retune the nervous system—such as resonance breathing, vagal nerve stimulation, or the Safe and Sound Protocol—to expand the window of tolerance, rather than relying on willpower or cognitive approaches alone.
These notes were generated by AI and may contain inaccuracies.
Dr. Stephen Porges created polyvagal theory, authoring more than 400 peer-reviewed scientific papers. The theory states that our underlying physiological state affects how we perceive the world, how we interact with others, and how receptive we are to others engaging us. Our behaviors are not all intentional, as we experience days when we feel constrained and other days when we feel energetic and engaging. We need to pay attention to our underlying physiological state to navigate a complex world.
Humans respond to the local ecology like plants, detecting signals and responding accordingly. Despite our intelligence, we create narratives of control when we are actually being swept away by environmental challenges. We only acknowledge feeling overwhelmed once it reaches a certain threshold.
This dynamic is adaptive because the world was a dynamically changing place. However, we have lost innate and intuitive skill sets for recognizing when our body loses resilience. Culture trains us to suppress feelings or "get over" things, when in reality the body broadcasts signals to our awareness that we are told to ignore.
Many people are too at the mercy of their feelings and could benefit from greater agency. However, denying the real dynamic that we are a system interacting with our environment creates problems. Markers of success may be confounded because part of being successful involves feeling good about being a person, and motivation for working often stems from overcoming feelings of inadequacy.
When we numb our body or don't listen to it, we turn off neurophysiological feedback loops. These feedback loops monitor our functioning and create motor actions. Working hard often leads to stress and burnout because we are not listening to our body.
People chase success to give themselves the sensation of feeling good, but in pursuing achievement, they deny themselves the feeling of being good. Acquisition, wealth, and influence are wonderful things, but the question is what these successes enable us to do more of or become. Goals may involve acquisition, curiosity and learning, or being benevolent and compassionate.
Humans like exploration, curiosity, and humor. We can accumulate resources without the type of curiosity that enables our nervous systems to thrive. The manual for living a good life has been mistranslated.
In 1994, Porges was trying to solve what fight-or-flight and rest-and-digest models didn't explain. He was interested in what was going on behind people's smiles, what they were feeling inside, rather than test scores or reaction times. Science was mechanistic at the time, with behaviorism explaining everything and psychoanalysis treating mental health as independent of the body.
The prevailing view was that if something bothers you, sit on it and don't let it percolate. There was no understanding that feelings were anything other than optional until catastrophic events occurred. Porges himself experienced this when he got pneumonia and could no longer be around crowds of people, despite previously being extremely social.
Porges worked in neonatal intensive care units with preterm babies, building a vagal-related theory about the parasympathetic nervous system's importance. The parasympathetic system was considered a rest-and-restore system. However, preterm babies frequently had high heart rates from fight-flight responses, but their defensive systems were also shutting down vagal slowing of heart rate so severely that it compromised oxygen delivery to the brain.
This created the vagal paradox: how could the same nerve associated with health, growth, and restoration potentially compromise survival? A neurologist wrote suggesting "too much of a good thing is bad," but Porges recognized this didn't align with how systems evolved or are wired.
Porges examined anatomy and evolution through phylogenetics, studying species changes in autonomic regulation. Mammals developed a different type of autonomic nervous system that enabled safety in proximity to others through reading cues. When mothers talk to babies or people interact with pets, they use melodic, prosodic voices that broadcast signals of safety affecting physiology.
Mammals have a behavioral repertoire of broadcasting safety signals to others that affect their physiology. This insight came from using preterm babies as a window to see a system coming online that was not fully developed.
All three states in the model are adaptive in certain contexts - nothing is wrong, bad, or pathological. Vertebrates evolved into amphibians, with mammals and reptiles branching off with parallel evolutionary pathways. Mammals had a unique pathway because they needed to nurse and required parental care after birth, unlike species that laid eggs and walked away.
Mammals needed to broadcast their underlying physiological state through vocalizations and facial expressivity. This signaling system enabled social behavior to positively affect physiology. When engaging with dogs, vocalization regulates both human and dog physiological states, making this uniquely mammalian.
Old vertebrates had a primitive autonomic nervous system regulating organs through chemicals like adrenaline for mobilization and a neural system for calming. The vagus initially enabled rest and restore in peaceful comfort, but fight-flight mobilization interfered with this.
Mammals developed a nuanced vagal system enabling social engagement and mobilization without fear, called play and dance. They could be interactive rather than merely immobilized. Mammals had the older dorsal vagal system regulating organs, plus a newer ventral vagal system connected to voice and muscles of face and head, broadcasting visceral state and encouraging co-regulation.
Signaling is central - we are a nervous system looking for signals of safety and connection. When meeting someone, face-to-face contact, smiling, and engagement create a template for inferring whether that person is accessible or defensive. These signals indicate whether someone makes you feel uneasy.
We come into the world with a quest to be safe because we cannot survive by ourselves. We evolved needing others rather than as independent, self-contained systems. Trauma survivors often have difficulty moving into social worlds and gravitate toward horses, dogs, or cats for co-regulation from social mammals.
Feeling stress involves high heart rate, sweating, body tightness, ruminating thoughts, intrusive thoughts, concern, lack of creativity, and constrained capacity. Feeling safe means having options to access capacities, feeling exploratory and expansive. These represent two different physiological states - one supporting health, growth, and restoration, the other being constrained and costly, leading to burnout or exhaustion.
Safety is the child of a physiology that is homeostatic and self-regulating. Blocking feedback loops by numbing feelings makes the body less effective at self-regulation.
The most powerful signals of safety include smiling faces and prosodic, melodic voices. Research showed that when mothers' voices were more melodic, babies' heart rates dropped almost immediately after disruption, unlike when mothers engaged without melodic voice.
The capacity to connect with others is fundamentally a biological state, not just a psychological choice. Feeling safe enables curiosity, empathy, and social engagement. In an aggressive, noisy, or overwhelming world, capacities cannot be accessed even if abilities exist.
Safety is not merely the removal of threat signals - it requires positive signals of safety. Children playing while running and smiling create different bodily responses than children running from danger, because faces tell everything. The nerves controlling facial expression and voice intonation link to how the mammalian vagus functions, with calming triggering social engagement.
What appears as locked-in temperament or personality may actually be a physiological state retuned and locked into defensive mode. People with histories lacking safe individuals may react adversely to prosodic voices and safety signals, especially with abusive trauma histories. The nervous system gets triggered by voices and faces, producing feelings inside the body.
For atypical nervous systems, feelings of being good may be associated with abuse, triggering the brain to remember past experiences and prompting defensive responses. There are two parts to this sequence: the nervous system's propensity to react (a reflex requiring no cognition) and the subsequent awareness that becomes conscious and associated with good or bad experiences.
Being triggered is human and not the real issue - what matters is what happens when triggered and how the body shifts in response.
When a physiological state shift occurs, the typical response is to create a narrative to escape the situation rather than pause and interrupt the physiological response. Very few people have the patience to stop and get in the way of that physiological shift.
The example of pneumonia demonstrates how an organism can adapt within a single lifespan, reinterpreting old stimuli in new ways. This shows the flexibility of human systems. However, conditions like pneumonia, chronic fatigue, or long COVID reduce this flexibility, which comes as a shock to many people. The positive aspect is that pathways of rehabilitation exist, allowing the system to slowly gain confidence in itself.
A personal health journey involving long COVID, chronic fatigue, Lyme, CMV, EBV, mold toxicity, and heavy metals resulted in symptoms including tiredness at 7:00 PM nightly, unrefreshing sleep, aversion to standing water smells, inability to tolerate silence or music, along with impacts on word recall, working memory, and mood regulation.
A tilt table test conducted in February resulted in vasovagal syncope at 11 minutes with full syncope and heart stopping for 5 seconds. The test involves being strapped to a table with blood pressure cuffs, heart rate sensors on feet and hands, and an IV in case of fainting. After lying down and doing breathing exercises, the table is raised to 70 degrees. Despite attempting to use meditation and breath work, symptoms progressed from sweating and discomfort to blurry vision, sweating, and eventual fainting.
When experiencing vasovagal syncope during a heart checkup due to an IV being adjusted, the medical response was to ask "what are you scared of?" rather than recognizing the stimulation of baroreceptors. Many people who fail tilt table tests have a broad array of symptoms but are treated by the medical community as if nothing is wrong, despite symptoms persisting.
Long COVID serves as a metaphor for understanding that surviving a pathogen doesn't always inform the entire nervous system of victory. The body may kill the pathogen but fail to retune how the nervous system works, leaving it still prepared for war. This creates a chronic state of defense where the nervous system remains locked in a response pattern.
Prior to COVID, a tilt table test technician would perform 3-5 tests per month. Following the pandemic, this increased to 3-5 tests per day, indicating that long COVID consequences have been significantly underestimated.
A government-funded study on long COVID tested two interventions: a vagal nerve stimulator developed by a colleague and a sound intervention called sonic augmentation technology developed with colleague Ethne Gori. The vagal nerve stimulator sends signals to the vagus nerve indicating that everything is okay in the body, potentially connecting to organs and improving wellbeing. The sound intervention creates the sensation of floating in a rhythmic sea, functioning similarly to a cradle rather than a tilt table.
Both interventions showed massive effects across all measured parameters over a 4-week period. Measurements included questionnaires and symptom arrays focusing on fatigue, anxiety, and depression, with all indicators showing powerful improvement.
A dysregulated nervous system causes anxiety, depression, lower energy, poor sleep, gut dysfunction, and tachycardia because these represent a suite of systems affected by autonomic nervous system regulation. This constitutes a regulatory disorder where modern medicine struggles to see the system and its function as a whole.
The body enters a chronic state of defense where the success of killing a pathogen doesn't retune nervous system function. The nervous system remains prepared for war. This applies equally to traumatic emotional events, physical events, and traumatic pathogenic events, though conscious events allow for narrative understanding while pathogenic events operate below conscious threshold.
Recent talks introduced the concept of sentinel trauma, examining how the body reacts to single events of mortal threat. COVID can represent a mortal threat to the nervous system, resulting in hardened response patterns. The tilt table test assesses whether feedback loops are working on blood pressure, involving the vascular bed, vagus, sympathetics, and blood flow.
A daily exercise routine involves using a back swing (inversion table) that tilts to 70 degrees down and 70 degrees up. The routine includes 5 minutes of sit-ups in the inverted position, followed by 30 rapid tilts on each breath. This challenges baroreceptors as a neural exercise to maintain system flexibility, particularly important at age 81.
Research from the 1990s involved a motorized tilt table that rocked people up 21 degrees and back down to horizontal over 7 seconds. No one wanted to get off the table, and research showed entrainment of rhythms associated with vascular bed activity. This led to development of acoustic interventions mimicking the tilting effects.
The Safe and Sound Protocol mimics acoustic features of a mother's voice, broadcasting calmness and engagement. It has been used with several hundred thousand people, particularly in pediatric populations, and with trauma populations in conjunction with EMDR and various cognitive behavioral therapies to make clients more accessible to therapy.
The Rest and Restore Protocol, also called sonic augmentation technology, involves visualized floating in a wonderful sea without need for connection. It creates a feeling of safety where there's no need to look for someone or listen, described as stealth meditation. This addresses the problem that traditional meditation can be too difficult for traumatized individuals, where immobilization signals vulnerability to the nervous system.
The frequency range of 500 to 3,000 hertz enables social communication across mammals. All mammals, including mice, vocalize in similar auditory spectrum areas. Dogs, cats, and horses overlap with human bands of social communication, allowing humans to calm these animals through vocalization in this frequency range.
Playing algorithmically modulated music mimicking mother's voice frequencies in a preschool resulted in children talking to each other and gravitating near speakers, showing increased socialization. The same music without algorithmic modulation resulted in solitary behavior, while other music produced no effect.
A major problem exists where nervous systems from traumatized environments may interpret someone broadcasting safety frequencies as a predator. Personal history retunes the nervous system and keeps individuals out of social settings, making it difficult to find suitable partners despite conscious desire for connection.
Vagal nerve stimulators are real interventions, but the nervous system is smart. If the system is stimulated to be calm and accessible while being abused, the nervous system will cut off that feedback and adjust. The concept of hacking the nervous system is incorrect; the goal should be making the nervous system available and then exercising it to expand its range and increase flexibility.
Exercising the system involves challenging it and allowing it to calm down, then challenging it again. This resembles oscillating tilt exercises done each morning. The key is awareness that stressing the system will change it, pulling off inhibitory aspects so heart rate increases but then returns to baseline, allowing repetition of the exercise.
Heart rate variability was first quantified in 1969, with initial work focusing on underlying mechanisms and neural innervation rather than descriptive statistics. Current commercial devices like Fitbit provide only measures of variance, which represents a descriptive statistic, while the specific vagal influence in heart rate activity has been largely overlooked.
Resonance breathing theory suggests individual differences in resonant frequency, though this may not be as specifically tailored as commonly thought. The body gravitates toward slower rhythmicities around 0.12 Hz rather than the 0.1 Hz (10 seconds) typically used. This frequency aligns more closely with normal vascular oscillation than typical breathing frequencies.
Personal assessment using an HRV resonance breathing lamp showed an optimal frequency of 4.5 breaths per minute, where the highest measurements were achieved.
Vagal nerve stimulator can be effective when used in the right context. Resonance breathing may also play a positive role, but it requires active introspection rather than simply monitoring numbers. The process involves assessing what feels optimal and closing the loop between sensory input and motor response.
A key question concerns how much therapeutic work requires a relational aspect between individuals versus purely physiological interventions. Physiological approaches include vagal nerve stimulation, using a tilt table to stress and relax the nervous system, and breathing at specific rates. These interventions may expand the nervous system's tolerance window.
Beyond interoception alone, the question becomes whether exposure to the world through social or nervous system exposure therapy within a newly calmed window is important. The Safe and Sound Protocol demonstrates this principle in clinical practice, where it is not used in isolation but to make clients more accessible to other interventions, potentially making the therapist more effective.
Creating a state of calm generates a window of flexibility and tolerance. Within this newly expanded window, which exists temporarily, individuals can expose themselves to interventions. Once the window closes, the goal is to increase that window of tolerance from state to trait.
Therapists using the Safe and Sound Protocol with highly sensitive people have found that starting with brief listening periods of a few seconds or a minute, then gradually expanding duration over days, opens the window for longer periods.
Singing, humming, and chanting create calming effects because they recruit the same neural systems involved in ingestion. The coordination of suck, swallow, and breathing in infants uses the same neuromuscular control as social expressivity. When ingesting food, the ventral vagus system signals safety through resource availability and calorie presence, indicating no threat of starvation.
Ingestion involves the ventral vagus and social engagement system, while digestion involves the dorsal vagus and remains a private matter. Social rituals around eating have historically been part of community building throughout human society.
The ventral side of the body represents vulnerability to injury. Postures that expose the ventral side, such as extending the arms outward or a cat exposing its belly for rubbing, signal safety and trust. These postures would not occur in threatening environments or with strangers.
Bracing postures that protect the ventral side carry symbolic meaning, with different body positions communicating different states to observers.
Anxiety represents the body in a defensive state. The term anxiety may be unnecessary, as may many words associated with emotion. Anxious individuals remain mobilized regardless of whether tasks are completed, indicating that anxiety reflects physiological state rather than external circumstances.
Anxiety is not outside of us but represents broadcasting of our physiological state.
Recovery from long COVID demonstrates how range of resilience differs from pre-illness states but can improve over time. The nervous system tends to externalize feelings by blaming external factors such as colleagues, bosses, spouses, fiscal demands, or political issues, rather than recognizing internally generated feelings.
External problems are real, but navigation of complex environments requires addressing defensive physiological states first. The question shifts from what capacities exist to what gives access to those capacities.
Physiological state provides boundary conditions that permit capacities to be expressed. When physiological state creates constraints, the goal becomes reversing those constraints by signaling the nervous system that it is safe to come out and engage again.
Cultural signals often work against nervous system safety, such as installing metal detectors and arming teachers in schools following mass shootings. These interventions send profound signals to developing nervous systems despite their intended protective function.
Nervous system states are more visible than commonly recognized through facial expressions, voices, and muscle tension. Low tolerance nervous system expression appears as flat facial affect, particularly in the upper face, with false smiles possible in the lower face. Monotone or high-pitched voices without flexibility broadcast anxiety to listeners.
Spending time with highly anxious individuals causes physiological transmission of their anxiety state, creating a desire to distance oneself from them.
The manner of communication becomes as important or more important than content. How words are spoken through vocalization carries significant weight in how the nervous system receives messages.
Breathing work should focus on internal feelings of the breath rather than external monitoring, enhancing feedback loops. Resonance breathing and yoga breathing prove powerful. During exercise, paying attention to bodily responses rather than external distractions like television creates moments of zen.
Eighty percent of vagal fibers send sensory information to the brain, making it an internal surveillance system. The body craves this sensory information. Paying attention to breath during resonance breathing, sounds during Safe and Sound Protocol, and bodily sensations during exercise opens awareness to the 80% of sensory information returning through the vagus.
The process involves allowing feedback loops to complete themselves rather than simply paying attention. Body scans and meditative practices enable neural circuits to send information to brain areas for awareness and subsequent action, such as reducing muscle tone.
Metabolic support proves essential for somatic interventions to be effective. After radiation treatment for prostate cancer, mitochondrial dysfunction prevented basic activities like climbing stairs. L-carnitine supplementation signaled mitochondria to resume ATP production, enabling two miles on an elliptical the following day.
Without adequate metabolic resources, nervous system interventions may prove ineffective regardless of effort invested. Precursors for neurotransmission, including lecithin for acetylcholine and fish oil, support vagal nerve transmission and other neural functions.
Movement between hyperarousal and hypoarousal with poor regulation between states occurs when ventral vagus access is unavailable. The ventral vagus functions as a choreographer, enabling repurposing of fight-flight into play and immobilization into intimacy and restoration. Without this master regulator, individuals function like decorticate animals, subject to flip-flopping between states.
A paradoxical relaxation and startle response occurs when the nervous system interprets parasympathetic states as threats. As individuals relax below their window of tolerance, the system perceives this as vulnerability and bounces them into hyperarousal. The lower brain signals need for relaxation while higher brain structures prioritize perceived threats in the environment.
The Safe and Sound Protocol can trigger defensiveness in individuals with certain histories, despite broadcasting safety signals. People injured by biological parents may respond to safety signals as threats because vulnerability signals become associated with injury. Gradual introduction proves necessary for those with such histories.
Tinnitus has historically been considered an ear-based condition, leading to aggressive surgeries removing internal ear structures. However, tinnitus persisted even after such interventions.
Dr. Porges describes his experience with tinnitus caused by an acoustic or vestibular neuroma, a non-malignant tumor on the vestibular branch of the auditory nerve. In 2002, medical professionals recommended surgery that would remove the tumor but result in hearing loss. After researching conference papers rather than published literature, Dr. Porges discovered the "watch and wait" approach, which indicated that many patients live normally without surgery since the condition is rarely life-threatening.
Dr. Porges noticed that his tinnitus worsened during periods of stress and had an inflammatory component. He successfully treated this by taking high doses of fish oil, an anti-inflammatory agent. This resolved the tinnitus caused by nerve inflammation rather than the tumor itself, demonstrating how inflammation from defensive physiological states can exacerbate symptoms.
Inflammation forms part of a cluster of symptoms that occur together during defensive states. When the nervous system becomes dysregulated or has lower tolerance, it triggers this inflammatory response as part of the broader defensive physiology that includes elevated heart rate, sweating, and other autonomic changes.
Eighty percent of vagal fibers go to the gut, functioning primarily as gut receptors rather than being focused on digestion. The gut acts as a farm for molecules the body needs, with a complex microbial environment. Dr. Porges conducted extensive work in gastroenterology over the past decade, finding that autonomic nervous system dysregulation is highly prevalent in individuals with gut problems, including chronic vomiting syndromes.
The gut-brain connection operates bidirectionally. Environmental events affect gut function, while gut sensations can disrupt daily life and limit capacities. This represents a complete system where signals travel in both directions.
While basic nervous system mechanics operate similarly across sexes, different demands exist at different life stages. Research has historically focused on males because females present more variability in clinical trials, which complicates establishing cause-and-effect relationships. Dr. Porges acknowledges being informed by his wife that sex differences exist despite his initial attempts to neglect this question.
Dr. Porges expresses strong interest in palliative medicine and how poorly society handles end-of-life experiences. He advocates for tools that enable people to "smile and wave goodbye" rather than maintaining fear of the dying process. In over 1,150 podcast episodes, fewer than 10 have addressed palliative care despite death being universal.
Ageism remains the only universally accepted form of discrimination, with no social consequences for expressing it publicly. This affects how the world accommodates people who are becoming frail, a reality Dr. Porges notes affects everyone eventually.
Co-regulation represents the biological basis of love, where individuals literally regulate each other's nervous systems. When men lack consistent co-regulation experiences, particularly from fathers, it affects their ability to cope with vulnerability and navigate relationships. This connects to broader cultural patterns where early experiences shape later social and political behaviors.
Dr. Porges reflects on how his idealistic view that everyone could achieve what he achieved failed to recognize the privileges and opportunities he received through his lineage and circumstances.
Dr. Porges reframes various health challenges as manifestations of insufficient system resilience. The cortex enables evaluation of this lack of resilience and strategic decisions about moving into less vulnerable situations. The key question becomes whether daily demands feel nourishing or depleting during recovery, and whether the activities used to define oneself contribute to or alleviate symptoms.
Stellate ganglion blocks work by downregulating overextended sympathetic activity, allowing parasympathetic calming to express itself. This approach has proven useful for trauma and PTSD, particularly when individuals are locked in fight-flight states. However, its utility for those experiencing shutdown, withdrawal, and immobilization remains uncertain.
Dr. Porges prefers "transgenerational" over "intergenerational" trauma terminology. Cultural transmission occurs through social environments rather than requiring epigenetic mechanisms. The British boarding school system exemplifies this, where children are removed from normal childhood experiences to create an elite class whose bodies become locked in defensive states, compromising their capacity for compassion.
Most criticisms of polyvagal theory stem from misrepresentations rather than actual engagement with the theory's content. Critics often misunderstand the evolutionary development of the vagal system, the distinction between anatomical structures and their neurophysiological components, and that the theory addresses an integrated brainstem system rather than focusing solely on the vagus nerve itself.
Dr. Porges created an AI polyvagal scholar programmed with fidelity to the actual theory to address misrepresentation issues. He emphasizes that valid criticism requires accurately representing his stated positions from the literature rather than attacking mischaracterized versions of the theory.
A well-regulated nervous system capable of connection, love, sharing, and trust also maintains the ability to detect threat appropriately. Safety does not create vulnerability to undetected danger in healthy systems. Instead, the capacity for co-regulation and the ability to navigate complex environments emerge from the same well-regulated physiological state.
The nervous system and physiological state represent the single most influential factor in how we experience the world and how the world experiences us. This understanding provides essential language and insights for navigating and comprehending our own responses and interactions.
Polyvagal theory enables us to understand that our physiological state serves as a major component of our behavior, our identity, and our feelings. The theory was designed specifically to help us see the world through this lens, recognizing that physiological state fundamentally shapes our experience.
When viewing the world through the framework described, this represents being polyvagal informed. In academic contexts, this understanding aligns with the polyvagal informed approach, while in broader cultural contexts it might be referred to as the "polyvagal pill" - both terms describing the same fundamental shift in perspective about the role of physiological state.
"What the nervous system or what I'm basically saying our physiological state is really a major component of our behavior and who we are and our feelings."
The conversation concludes with mutual appreciation between the participants, acknowledging the value of the discussion and the insights shared throughout the episode.
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