How to use: Film 2-3 minute dramatic recaps of each module in the style of a TV show's "previously on..." segment. You know the format — quick cuts, dramatic music cues (hum them yourself), key moments replayed, building to a cliffhanger. Each "episode" is a module. The recap forces you to identify THE most important concepts and present them in a punchy, connected narrative.
Why video: The TV recap format is inherently visual — you gesture, you point, you use dramatic pauses and facial expressions. It's also inherently SELECTIVE. A "previously on" doesn't cover everything — it covers what matters for the NEXT episode. This trains you to identify the high-yield concepts and their connections across modules.
How to film: Direct to camera. Fast. Dramatic. Like a narrator doing a voiceover for a prestige TV drama. Hum your own dramatic music between beats if you want. The cheesier, the more memorable.
(Urgent, establishing-shot energy)
"A student walks into a room in the Netherlands. They think they're studying health. They have NO idea what's coming.
Leo Pruimboom stands at the front. He says five words that will change everything: 'Modern disease is evolutionary mismatch.'
The genome — two million years of fine-tuning — running on hardware designed for the savanna. But the environment? Completely rewritten. Processed food. Artificial light. Chairs. Isolation. The body is sending error messages. Humanity is calling them 'diseases.'
PNI. Psychoneuroimmunology. Three systems — psychology, neuroscience, immunology — that medicine treats as separate. Pruimboom says they're ONE system. Connected. Bidirectional. Inseparable. The brain talks to the immune system. The immune system talks to the brain. The gut talks to both. And nobody in conventional medicine is listening to the conversation.
The student doesn't know it yet... but they will never see the body the same way again."
"Leo returns. And this time, he brings a mirror.
Every chronic disease — diabetes, depression, autoimmunity, cardiovascular disease, cancer — is a MISMATCH between our ancestral genome and our modern environment. Not a malfunction. A mis-FIT.
The body expects intermittent fasting — it gets constant feeding. It expects daily movement — it gets chairs. It expects darkness at night — it gets LED screens. It expects acute infections followed by resolution — it gets low-grade inflammation that never ends.
And the body responds the only way it can: with the tools evolution gave it. Insulin resistance — an immune trick, repurposed as metabolic disease. Sickness behaviour — a survival programme, misread as depression. Fat storage — a famine buffer, permanently activated in an age of abundance.
The prescription isn't medicine. It's REALIGNMENT. Move like an ancestor. Eat like an ancestor. Sleep like an ancestor. Stress like an ancestor — briefly, intensely, and then RECOVER.
Intermittent living. The concept that will thread through every module to come."
"Daniel de la Serna takes the stage. And he reveals the body's command and control network.
The HPA axis. Hypothalamus → CRH → anterior pituitary → ACTH → adrenal cortex → cortisol. A three-tier cascade designed for crisis management. Beautiful when pulsatile. Devastating when chronic.
Cortisol — the adaptation hormone, wrongly called the stress hormone. In acute pulses: life-saving. In chronic elevation: hippocampal atrophy, glucocorticoid resistance, immune dysregulation. The thermostat breaks. The feedback loop fails. The system that was meant to ADAPT becomes the driver of disease.
And the vagus nerve — cranial nerve X, the wanderer — 80% of its fibres are AFFERENT. The body talks to the brain more than the brain talks to the body. The gut has 500 million neurons. The enteric nervous system can function INDEPENDENTLY of the brain. The second brain isn't a metaphor. It's anatomy.
Serotonin: 90% made in the gut. Doesn't cross the blood-brain barrier. But modulates motility, vagal signalling, and immune function. The tryptophan that WOULD become serotonin can be STOLEN by the immune system through the kynurenine pathway when inflammation activates IDO. Less serotonin. More neurotoxic quinolinic acid. Inflammation causes depression at the biochemical level.
The neuroendocrine system isn't separate from the immune system. It IS the immune system's communication network. And it's about to get tested."
"Leo Pruimboom returns. It's time to meet the army.
Innate immunity: fast, ancient, pattern-based. Toll-like receptors — TLR-4 recognises LPS. One binding event triggers a cascade — MyD88, IRAK, TRAF6 — and NF-kappa-B is FREE. The master switch hits the nucleus. TNF-alpha, IL-1-beta, IL-6, COX-2 — the inflammatory programme IGNITES.
Adaptive immunity: slow, precise, memory-forming. T-cells and B-cells with receptors assembled by random gene rearrangement — VDJ recombination generating 10^11 possible specificities. Clonal selection. Affinity maturation. Memory cells that remember for DECADES.
The nine components. Cells, proteins, barriers, microbiome, organs, chemicals, nerves, psychology, metabolism. cPNI's immune system is not just white blood cells. It's a WHOLE-BODY intelligence.
IL-6 arrives. The double agent. Classical signalling: anti-inflammatory. Trans-signalling through soluble receptor: pro-inflammatory. Same cytokine. Opposite outcomes. Context is everything.
But here's the twist nobody expected: the immune system is about to become SELFISH. And everything learned in this module... is about to go chronic."
"Nicolai Loboda takes the floor. And he delivers the most important lecture in the entire programme.
Inflammation is not the enemy. FAILED RESOLUTION is the enemy.
The eicosanoid class switch: arachidonic acid, processed by COX-2, makes prostaglandins — pro-inflammatory. PGE2 drives pain, fever, vasodilation. But the SAME arachidonic acid, processed by 15-lipoxygenase, makes LIPOXINS. Anti-inflammatory. Pro-resolving. Same substrate. Different enzyme. The body switches its OWN chemical programme from war to peace.
And from omega-3 fatty acids: RESOLVINS from EPA and DHA. PROTECTINS from DHA. MARESINS from macrophage-mediated DHA processing. The specialised pro-resolving mediators — SPMs — that ACTIVELY RESOLVE inflammation. Not suppress. RESOLVE. There's a difference that changes everything.
Efferocytosis: M2 macrophages consuming apoptotic neutrophils. The dead soldiers being cleaned from the battlefield so their toxic contents don't cause more damage. This is the act that ENDS inflammation.
And the horrifying implication: if omega-3 is insufficient, if the class switch never flips, if macrophages never reach M2... the inflammation NEVER ENDS. Low-grade. Chronic. Invisible on standard blood work. Destroying everything slowly.
This is the mechanism behind every disease of civilisation. And now the student knows how to fix it."
"Itziar Hernandez enters. And she shows the student where it all begins: the gut.
One cell layer. ONE. Between the gut lumen — the most bacterially dense environment on Earth — and the lamina propria — where 70% of the immune system lives. Tight junctions: claudins, occludin, ZO proteins. Zonulin: the gatekeeper that can open the gates too wide.
The microbiome: trillions of organisms. Commensal partners producing butyrate — fuel for colonocytes AND Treg inducer. Akkermansia in the mucus layer. Bifidobacterium. Lactobacillus. A civilisation that we're systematically destroying with processed food, antibiotics, and a lack of fibre.
When the barrier fails: LPS crosses. TLR-4 activates. NF-kappa-B fires. Systemic inflammation from a LOCAL breach. The gut doesn't stay local. It goes EVERYWHERE. Via the bloodstream. Via the vagus nerve. Via microbial metabolites.
The migrating motor complex: the cleaning wave that only runs during fasting. The cephalic phase of digestion: anticipation before action. The oral microbiome: gateway to systemic health.
The student realises: every chronic disease conversation eventually leads back to this. To the gut. To the one-cell-thick wall. To the barrier between order and chaos."
"Tom Fox arrives. And he asks the question that ties everything together: what happens when the immune system stops sharing?
The body has a fixed energy budget. Brain takes 20%. Muscle takes its share. Gut, liver, kidneys — everyone gets a cut. In peacetime, this works.
But when the immune system activates? It COMMANDEERS. TNF-alpha induces insulin resistance in skeletal muscle — redirecting glucose to immune cells. The immune system runs on Warburg metabolism — anaerobic glycolysis, fast and dirty. It doesn't ask permission. It TAKES.
Sickness behaviour: fatigue, anorexia, social withdrawal. Not symptoms of disease — STRATEGIES of immune energy conservation. Your brain makes you feel terrible so you stop wasting energy on movement and socialising while the immune system fights.
ADAPTIVE in acute infection. DEVASTATING in chronic activation. Because the immune system never stands down. It keeps stealing glucose. Muscles waste. The brain fogs. Metabolism scrambles. And the cortisol deployed to suppress it? Ignored. Glucocorticoid resistance.
The selfish immune system isn't malfunctioning. It's doing exactly what evolution designed it to do. In the wrong context. For the wrong duration. Without resolution.
Everything from Modules 1-6 converges here. Evolutionary mismatch creates the triggers. The gut provides the entry point. The HPA axis tries to manage it and fails. The inflammatory resolution pathway can't engage without omega-3. And the immune system — selfish, relentless, doing its job — becomes the engine of chronic disease.
The student now sees the WHOLE picture. But can they diagnose it?"
"Itziar Hernandez returns. And she hands the student the TOOLS.
The five metamodels. Five lenses. One patient. No single answer.
Evolutionary: what mismatches drive this patient's condition? Biochemical: what do the functional lab markers reveal? Psycho-neuro-endocrine: what's happening in their HPA axis, their relationships, their meaning? Immunological: where is the inflammation, and is it resolving? Clinical: what's the integrated treatment plan?
Standard blood work says 'normal.' cPNI says 'let's look closer.' hs-CRP at 2.8 — 'normal' on the lab report. Sub-clinical inflammation in cPNI. Fasting glucose 5.4 — 'within range.' Pre-diabetic trajectory. Vitamin D at 40 — 'sufficient.' Immunologically inadequate.
The gap between 'normal range' and 'optimal function' is where chronic disease hides. And now the student can see into that gap.
The diagnostic interview. The timeline. The systems review. The pattern recognition across metamodels. This is where science becomes PRACTICE. Where knowing becomes helping.
The student is becoming a clinician."
"Tom Fox returns for the integration. And he delivers two prescriptions that cost nothing.
MOVEMENT. Not exercise — movement. Daily. Continuous. Your muscles are an endocrine organ. Every contraction releases myokines — IL-6 through classical signalling (anti-inflammatory), irisin (white-to-beige fat conversion), BDNF (neuroplasticity). AMPK activates. Autophagy initiates. GLUT4 translocates without insulin. The insulin-resistant cell gets a back door.
NUTRITION. Omega-3 for resolution. Fibre for the microbiome. Polyphenols for Nrf2. Protein for muscle preservation. Vitamin D for immune modulation. And WHEN you eat matters as much as WHAT — intermittent fasting activates AMPK, permits autophagy, runs the MMC, and resets the metabolic oscillation between mTOR (building) and AMPK (cleaning).
The student realises: the most powerful interventions in cPNI aren't supplements or protocols. They're ancestral behaviours. Move. Fast. Eat real food. Sleep in the dark. Get cold. Connect with humans.
Intermittent living isn't a technique. It's a return to the conditions your genome was built for. Everything else is mismatch management."
(Film this one with maximum dramatic tension)
"Coming this season on cPNI...
Module 11: The P in PNI. Leo Pruimboom returns for the psychology module. The mind doesn't just REFLECT disease — it DRIVES it. The CTRA. Loneliness as an inflammatory trigger. Meaning, purpose, and spirituality as immune modulators. The P in PNI isn't soft science. It's the most powerful variable in the equation.
Module 9: Organs II. The skeletal system. The internal organs. New battlegrounds, same principles.
Module 12: Integration Year II. Everything converges. The exam approaches.
And on the other side of that exam? Year 3. Neurodegeneration. Gender medicine. Lifestyle medicine. The final integration.
The student who walked into that room in the Netherlands didn't know what PNI meant.
Now they think in systems. They see connections where others see symptoms. They understand that the body is one integrated intelligence — immune, neural, endocrine, psychological — and that health is the restoration of its ancient rhythms.
July 2026. The exam. Everything leads here.
...Previously on cPNI."
| Module | Recap Filmed | Rewatched | Key Concepts Retained? |
|---|---|---|---|
| 01 Introduction | |||
| 02 Evolutionary Medicine | |||
| 03 Neuroendocrinology | |||
| 04 The Immune System | |||
| 05 Wound Healing & Resoleomics | |||
| 06 Organs I | |||
| 07 The Selfish Immune System | |||
| 08 Diagnosis | |||
| 10 Nutrition & Movement |