Health Optimization Medicine Podcast

In this episode of the Health Optimization Medicine Podcast, Dr. Allen Bookatz and Jodi Duval explore safety as a biological state and examine what happens when a threat has ended but the body's response has not yet fully resolved.
The conversation looks at safety from two interconnected perspectives: the cell and the nervous system. Jodi explains how cells respond to threats through the Cell Danger Response, while Allen explores how the nervous system continuously evaluates the body's internal and external environment and determines how much of the system should remain committed to protection.
A central theme throughout the episode focuses on the idea that the end of an acute threat is not necessarily the end of the healing response. The discussion explores what happens when the body remains organized around protection, even after the original crisis has passed. 
Join us as we delve into:
Safety as a Biological State: Why safety is more than simply removing an immediate threat and why the body may require additional signals before returning to normal function.

The Cell Danger Response: How cells respond to infection, toxins, injury, and metabolic stress through stages of containment, rebuilding, and reconnection.

Protection, Repair and Reconnection: Why the end of an injury or acute threat is not necessarily the end of the healing process.

When the Crisis Is Over but Recovery Isn't: Why someone may continue experiencing changes in energy, cognition, or tolerance after an acute illness or crisis has resolved.

The Nervous System and Safety: How the nervous system continuously samples internal and external information and determines how much of the body should remain committed to protection.

Safety Does Not Always Mean Calm: Why a safe system can still be highly activated, such as during exercise, and why outward stillness does not necessarily mean that the system has settled.

Stress and Recovery: Why stress itself is not necessarily the problem, and how the ability to recover, renew, and complete the response may influence resilience.

The Metabolic Cost of Prolonged Protection: How prioritizing defense and repair can defer growth, reserve capacity, and longer-term processes.

What Safety Feels Like: How breathing, muscle tension, posture, guarding, and a sense of choice may provide information about how a person is experiencing safety.

When the Mind Knows but the Body Doesn't: Why intellectual reassurance and objective evidence may not always correspond with how safety is registered physiologically.

The Limits of Measurement: What can currently be measured about cellular and physiological states, and where interpretation remains necessary.

Interoception and Body Signals: Why internal sensations can sometimes be amplified or diminished, affecting how the body interprets its own signals.

Scientific Uncertainty: Why frameworks such as polyvagal theory should be considered with awareness of ongoing scientific debate and why the broader discussion does not depend on resolving that particular debate.

Completing the Response: Why the episode distinguishes between the absence of the original problem and the active completion of the biological response.

This episode is for you if:
You are interested in the biology of safety, stress, and recovery.

You want to understand the Cell Danger Response and its different stages.

You are interested in how cellular and nervous-system processes may interact.

You have experienced a major stressor or illness and are interested in the recovery process that follows.

You want to better understand why being intellectually aware of safety may not always correspond with how the body feels.

You are interested in the relationship between stress, activation, recovery, and resilience.

You want to explore how the body allocates resources between protection, repair, adaptation, and growth.

You are interested in Health Optimization Medicine and the HOMeHOPe framework. 




You can also find this episode on…
YouTube: https://youtu.be/GAxXyJQKv2Y 
 
Find more from Health Optimization Medicine and Practice (HOMeHOPe):
Website: https://homehope.org/
Instagram: https://www.instagram.com/homehopeorg/
Use PODCAST10 to get 10% OFF your purchase of the Clinical Metabolomics Module at https://homehope.org/products/clinical-metabolomics
 
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In this special episode of the Health Optimization Medicine Podcast, Dr. Jup Kuipers, Dr. Ted Achacoso, Dr. Allen Bookatz, and Dr. Scott Sherr discuss how toxicities can build up over time, affect cellular energy production, and eventually show up as problems across different organ systems.
The team looks at two clinical cases involving mercury and arsenic exposure, and how symptoms were initially treated as separate problems by different specialists. They discuss why chronic, lower-level exposure can be difficult to identify, how heavy metals can interfere with mitochondrial function, and why looking at the cell may reveal a different picture than looking only at the organ that is showing symptoms.
Join us as we delve into:
The Limits of Organ-Based Medicine: Why specialists may correctly identify the affected organ while missing the shared environmental or metabolic cause. 

Subclinical vs. Acute Toxicity: Why chronic low-level exposure may affect health long before laboratory findings meet the threshold for acute poisoning. 

Why Blood Testing May Miss the Full Picture: Why circulating levels may not fully represent what has accumulated within cells and tissues.

Intracellular Toxicity Testing: How intracellular testing is discussed as a way of assessing mercury, lead, arsenic, and other toxic elements within cellular material.

Toxicities and Mitochondrial Function: How heavy metals can interfere with metabolic pathways involved in cellular energy production.

Why Symptoms Appear in Different Organs: How the system with the least resilience may become the first place where cellular dysfunction becomes visible.

Metabolomics and Early Detection: How metabolomic testing may provide a window into cellular function and help identify metabolic disruption.

Disease Management vs. Health Optimization: Why acute and specialist care remain essential, while a health optimization approach focuses on understanding the cellular environment before disease becomes the dominant problem.

This episode is for you if:
You experience symptoms affecting several organ systems without one clear explanation.

You want to understand the difference between acute poisoning and chronic, low-level exposure.

You are interested in how mercury, arsenic, lead, cadmium, and aluminum may affect cellular energy production.

You want to understand why certain toxic exposures can be difficult to identify through conventional testing.

You are interested in metabolomics and intracellular testing as tools for looking more deeply at cellular health.

You want to understand the difference between managing disease and proactively optimizing health.

 
You can also find this episode on…
YouTube: https://youtu.be/WChkA4twbg4
 
Find more from Health Optimization Medicine and Practice (HOMeHOPe):
Website: https://homehope.org/
Instagram: https://www.instagram.com/homehopeorg/
Use PODCAST10 to get 10% OFF your purchase of the Clinical Metabolomics Module at https://homehope.org/products/clinical-metabolomics
 
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In this episode of the Health Optimization Medicine Podcast, Dr. Scott Sherr sits down with Dr. Bryce Appelbaum to discuss the connection between vision, screen time, brain function, and nervous system regulation.
Most people think of vision as eyesight, or how clearly they can see an eye chart. Dr. Appelbaum explains why vision is much broader. It involves how the brain receives information through the eyes, interprets the environment, coordinates movement, and decides how to respond.
The conversation explores how prolonged screen use can narrow peripheral awareness, increase visual stress, and keep the nervous system in a more activated state. They also discuss the rise of myopia, the difference between eyesight and functional vision, and how vision performance training may support reading, learning, reaction time, spatial awareness, athletic performance, and recovery after concussion or traumatic brain injury.
Join us as we delve into:
Screen Time and the Nervous System: How prolonged engagement with close, two-dimensional screens can contribute to visual stress, tunnel vision, fatigue, and sympathetic activation.

Central vs. Peripheral Vision: Why stress narrows visual attention and how soft gaze, panoramic viewing, and access to peripheral vision may help the nervous system move out of fight or flight.

Eyesight vs. Vision: Why seeing 20/20 does not necessarily mean the eyes and brain are working together efficiently.

The Eye-Brain Connection: How the brain gathers, filters, processes, and interprets visual information before directing movement or action.

Brain Fog, Fatigue and Reading Difficulty: How inefficient eye coordination and focusing may contribute to headaches, tired eyes, reduced concentration, poor productivity, and avoidance of visually demanding tasks.

The Myopia Epidemic: Why nearsightedness is becoming more common and how genetics, limited outdoor time, near work, poor lighting, and screen use may influence its development.

Screen Breaks That Work: Why the 20-20-20 rule should be treated as the maximum interval between visual breaks for people who work on screens.

The Limits of Vision Biohacks: Why palming may help relaxation, but broad claims that sunning or simple exercises can eliminate the need for glasses are not supported for everyone.

This episode is for you if:
You spend several hours each day working on a phone, computer, or tablet.

You experience headaches, dry eyes, eye strain, blurred vision, brain fog, or fatigue after screen use.

You want to understand the difference between eyesight and functional vision.

You are concerned about myopia or increasing prescriptions in yourself or your children.

You want practical ways to reduce visual stress during the workday.

You are interested in vision training for learning, sports, productivity, concussion recovery, or healthy aging.

You want to understand how vision may affect nervous system regulation, balance, spatial awareness, and cognitive performance.

 
You can also find this episode on…
YouTube: https://youtu.be/qwtP-0gU5wU
 
Find more from Health Optimization Medicine and Practice (HOMeHOPe):
Website: https://homehope.org/
Instagram: https://www.instagram.com/homehopeorg/
HOMeHOPe Conference 2026: https://homehope.org/homehope-conference-2026
Use PODCAST10 to get 10% OFF your purchase of the Clinical Metabolomics Module at https://homehope.org/products/clinical-metabolomics
Find more from Troscriptions:
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Find more from Dr. Bryce Appelbaum:
Website: https://myvisionfirst.com/
ScreenFit™: https://screenfit.com/
Instagram: https://www.instagram.com/drbryceappelbaum/
Get $200 off ScreenFit™ using code SNH at https://screenfit.com/enroll

Get 10% off Digital Performance Lenses using code SNH at https://shop.myvisionfirst.com/

In this episode of the Health Optimization Medicine Podcast, Dr. Scott Sherr, Dr. Allen Bookatz, and Jodi Duval explore the glymphatic system and the role sleep plays in clearing metabolic waste from the brain.
Getting eight hours of sleep does not necessarily mean getting eight hours of effective brain clearance. The team looks at how the autonomic nervous system, norepinephrine, cerebrospinal fluid and interstitial fluid exchange, aquaporin-4 channels, circadian timing, body temperature, gut barrier integrity, and even anxiety around wearable sleep scores may influence the conditions needed for healthy glymphatic flow.
The discussion also introduces a practical HOMeHOPe glymphatic optimization protocol focused on creating the chronobiological, bioenergetic, and environmental conditions that support natural overnight brain clearance.
Join us as we delve into:
How the Glymphatic System Works: How cerebrospinal fluid moves through perivascular spaces, exchanges with interstitial fluid, and helps remove metabolic waste including beta-amyloid, tau, and cellular metabolites. 

Circadian Biology, NAMPT and NAD+: How CLOCK and BMAL1 influence NAMPT and the NAD+ salvage pathway, and why disrupted circadian rhythms can affect cellular maintenance.

The Autonomic Nervous System: How elevated sympathetic tone and nighttime norepinephrine can interfere with the conditions required for glymphatic flow.

Circadian Biology and Brain Health: Why light timing, cortisol rhythms, and autonomic balance matter for creating the right conditions for overnight clearance.

The HOMeHOPe Glymphatic Optimization Protocol: Practical strategies involving morning light, evening light reduction, bedroom temperature, sleeping position, autonomic safety, and gut barrier support.

The Role of Sleep Hygiene: Why the environment and signals surrounding sleep may matter just as much as the number of hours spent in bed.

The Skeptical Position: The team examines the conventional neurology argument that slow-wave sleep architecture, aging, and aquaporin-4 changes may limit how much glymphatic function can be influenced through lifestyle.

Precision vs. Generic Sleep Advice: Why HOMeHOPe emphasizes measurement, metabolomics, circadian markers, and individualized guidance rather than simply telling someone to "get more sleep."

This episode is for you if:
You get enough hours of sleep but still wake up with brain fog or fatigue.

You want to understand how the glymphatic system supports brain health during sleep.

You are interested in the relationship between sleep hygiene, circadian biology, and brain clearance.

You use a wearable to track sleep and want to understand the potential downside of becoming overly focused on sleep scores.

You are interested in practical, non-pharmaceutical approaches to supporting healthy brain function and sleep.

 
You can also find this episode on…
YouTube: https://youtu.be/kLFUm2Ik2s4 
 
Find more from Health Optimization Medicine and Practice (HOMeHOPe):
Website: https://homehope.org/
Instagram: https://www.instagram.com/homehopeorg/
HOMeHOPe Conference 2026: https://homehope.org/homehope-conference-2026
Use PODCAST10 to get 10% OFF your purchase of the Clinical Metabolomics Module at https://homehope.org/products/clinical-metabolomics
Find more from Troscriptions:
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In this episode of the Health Optimization Medicine Podcast, Dr. Scott Sherr, Jodi Duval, and Dr. Allen Bookatz explore what happens inside the cell when the body perceives stress or danger.
The discussion focuses on Dr. Robert Naviaux's Cell Danger Response and how mitochondria can alter energy production and signaling in response to perceived threats. The team examines why fatigue, brain fog, inflammation, and exercise intolerance can occur even when standard laboratory testing appears normal, and how the different phases of the cellular response are meant to move from defense through repair and recovery.
Join us as we delve into:
Stress at the Cellular Level: How mitochondria and cells respond when they perceive danger from infection, toxins, injury, environmental exposures, or psychological stress.

Why Normal Labs May Not Explain Fatigue: Why standard testing may not capture changes in cellular signaling, mitochondrial output, or a cell's metabolic state.

The Three Phases of the Cell Danger Response: How CDR1 involves inflammatory defense, CDR2 involves proliferation and rebuilding, and CDR3 involves differentiation and recovery.

Stress, Mitochondria and Energy: Why cells may reduce energy output while continuing to interpret their environment as unsafe.

Hormesis and Stress Dosing: Why exercise, temperature exposure, and other acute stressors may be useful when properly dosed, while excessive stress may add to the existing burden.

Mitochondrial Nutrient Support: The role discussed for CoQ10, PQQ, magnesium, and NAD+ precursors in supporting the metabolic machinery during the transition through the CDR phases.

Parasympathetic Safety Signaling: How extended-exhale breathing, HRV biofeedback, vagal tone work, and other approaches are discussed as ways to reduce chronic sympathetic input.

The Limits of the Framework: Why deliberately adding stress to an already overloaded system may be counterproductive when the dose is not appropriate.

Disease Management vs. Health Optimization: Why the HOMeHOPe approach looks not only at the trigger but also at the conditions the cell may need to complete its response.

This episode is for you if:
You experience fatigue, brain fog, or exercise intolerance despite relatively normal standard laboratory results.

You want to understand the Cell Danger Response and its proposed role in cellular stress.

You are interested in mitochondrial function, cellular energy, inflammation, and purinergic signaling.

You want to understand why more exercise, stimulation, or stress is not always the right answer.

You are interested in hormesis, autonomic regulation, gut health, circadian biology, and metabolomic testing.

You want to understand how Health Optimization Medicine approaches cellular stress and recovery.

You can also find this episode on…
YouTube: https://youtu.be/0Vx79yABA9k 
Find more from Health Optimization Medicine and Practice (HOMeHOPe):
Website: https://homehope.org/
Instagram: https://www.instagram.com/homehopeorg/
HOMeHOPe Conference 2026: https://homehope.org/homehope-conference-2026
Use PODCAST10 to get 10% OFF your purchase of the Clinical Metabolomics Module at https://homehope.org/products/clinical-metabolomics
Find more from Troscriptions:
Website: https://troscriptions.com/
Instagram: https://www.instagram.com/troscriptions/
Use POD10 to get 10% OFF your Troscriptions purchase at https://troscriptions.com/collections/our-products