16-Week HPA Axis Recovery Programme · Three Levels of Support

The Resilient
Stress System™

Your stress response was designed to save your life. When it never switches off — you lose it. A structured programme for cortisol regulation, HPA axis recovery, and lasting stress resilience, with optional DUTCH hormone testing and clinical oversight built in.

View three tiers ↓ How it works ↓ What the DUTCH shows ↓ Book a call →
The HPA Axis — How the Stress System Works
From Acute Response to Chronic Dysregulation
Understanding where you are on this spectrum changes everything about how recovery is approached
HPA AXIS RESPONSE SPECTRUM Regulated Normal cortisol rhythm Good recovery Activated Elevated cortisol Wired but tired Dysregulated Inverted pattern Anxious / exhausted Depleted Flat cortisol curve Complete exhaustion DUTCH PLUS IDENTIFIES YOUR STAGE Cortisol curve + awakening response + DHEA + neurotransmitter metabolites Most people arrive in the Dysregulated or Depleted stage after years of chronic stress — often without knowing which one. The intervention for each stage is different. Testing removes the guesswork.
Does this sound familiar?

Your stress response has
stopped switching off

You're not just stressed. Something in the system has shifted — the recovery isn't happening the way it used to. The energy doesn't return after a good night's sleep. The calm doesn't come even when the pressure lifts.

◦Exhausted but wired — tired during the day, alert when you should be sleeping
◦Energy has declined progressively — you're managing, but not recovering
◦Mood is lower, patience is shorter, resilience to small setbacks has dropped
◦Appetite and weight have shifted — particularly around the midsection
◦Brain fog, poor focus, memory not what it was — cognitive load feels higher
◦You know you need to change something but don't know which lever to pull first
◦Sex drive has declined, recovery from exercise is slower than expected
◦Your gut has deteriorated alongside the stress — the two feel connected
The problem most approaches miss

The HPA axis doesn't have an off switch — it has a calibration

The hypothalamic-pituitary-adrenal axis is not a battery that runs flat. It is a dynamic, adaptive system that calibrates to the load it expects — and when that load has been chronically high, it recalibrates its baseline upward. The problem isn't that you're stressed. It's that the system has learned to expect stress, and the architecture of your cortisol rhythm has reorganised around that expectation.

This is why rest alone doesn't fix it. Taking a holiday doesn't recalibrate a dysregulated HPA axis. Neither does cutting caffeine, or going to bed earlier, or saying no to more things — though all of these help at the margins. Real recovery requires working directly with the system's regulation mechanisms: circadian rhythm, vagal tone, glycaemic stability, adrenal nutritional support, sleep architecture, and the neurochemical environment that governs cortisol output.

"The intervention for a depleted cortisol pattern is the opposite of the intervention for an elevated one. Without testing, you're guessing — and the wrong intervention makes it worse."

The DUTCH Plus hormone assessment measures your full 24-hour cortisol pattern, your cortisol awakening response, DHEA and DHEA-S, oestrogen and testosterone metabolism, melatonin, and the dopamine and norepinephrine metabolites that determine your neurochemical resilience. It tells you exactly which stage of HPA dysregulation you're in — and that changes everything about how recovery should proceed.

The Four Stages — and Why Each Needs a Different Approach
Stage 1 · Activated
High output, high demand
Cortisol elevated across the day, particularly afternoon and evening. The system is working hard to meet a genuinely high load. Energy is maintained but at the cost of sleep, recovery, and downstream hormone production (testosterone, progesterone, melatonin).
DUTCH: elevated total cortisol metabolites · blunted evening decline
Stage 2 · Dysregulated
Inverted rhythm, wired and tired
Cortisol pattern has inverted — low morning output, elevated evening. The system can no longer produce the morning surge that drives motivation and readiness, but remains activated when it should be winding down. The defining presentation: exhausted but unable to rest.
DUTCH: blunted CAR · elevated evening cortisol · disrupted melatonin
Stage 3 · Depleted
Flat curve, complete exhaustion
Total cortisol output significantly reduced. The axis has downregulated after sustained overstimulation. Low DHEA, low sex hormones, impaired immune function, cognitive decline, profound fatigue. Recovery is slower and requires nutritional rebuilding before lifestyle interventions produce results.
DUTCH: low total metabolites · low DHEA-S · flattened diurnal curve
The Programme Framework

Five phases. Built around
how recovery actually works.

The Resilient Stress System™ follows a sequenced clinical framework. The order matters — beginning with the most fundamental regulatory systems and building progressively toward long-term resilience. The programme adapts to your HPA stage; the interventions for a depleted stage differ substantially from those for an activated one.

01
Stabilise the Nervous System First
Before anything else, the autonomic nervous system needs a reliable parasympathetic signal. Breathwork, circadian rhythm anchoring, blood sugar stabilisation, and load reduction. The system cannot begin to recalibrate while the stressor load exceeds recovery capacity.
DUTCH-guided: CAR assessment informs morning protocol timing
02
Rebuild the Nutritional Foundation
Cortisol synthesis requires cholesterol, vitamin C, B5, magnesium, and zinc. Chronic HPA activation depletes all of these progressively. This phase addresses the nutritional substrate deficit that makes recovery impossible regardless of lifestyle changes — targeted to your HPA stage and test results.
DUTCH-guided: Stage 1 vs Stage 3 nutritional protocols differ significantly
03
Recalibrate Sleep Architecture
Testosterone is produced during deep sleep. Growth hormone pulses require slow-wave sleep. Melatonin suppresses cortisol. The relationship between sleep and HPA function is bidirectional and clinically inseparable. This phase restores sleep architecture as a direct HPA recovery intervention — not as a secondary lifestyle consideration.
DUTCH-guided: melatonin metabolite and evening cortisol inform sleep protocol
04
Calibrate Movement to Your Stage
High-intensity exercise is a cortisol stimulus. For Stage 1 and 2, this can be productive. For Stage 3, it deepens depletion. This phase introduces zone-appropriate movement — from restorative practices for depleted stages to progressive loading for recovering ones. Movement is medicine here only when it matches the system's actual capacity.
DUTCH-guided: DHEA:cortisol ratio determines exercise intensity ceiling
05
Build Sustained Resilience
The final phase builds the regulatory capacity that makes the system genuinely resilient — not just managed. This means developing the ability to mount an appropriate stress response and recover from it fully, rather than living in permanent low-grade activation. The goal is not the absence of stress. It is the ability to move through it.
Three Levels of Support

The Map. The Investigation.
The Case.

The programme framework is the same across all three tiers. What changes is the depth of clinical investigation — whether we know your HPA stage from DUTCH testing, and how much practitioner oversight accompanies the process. Every tier carries full upgrade credit.

Tier One · The Map
The Map
The complete programme, self-paced
£697
One-time · Full programme access
What's included
  • 8 guided modules — all five phases
  • Practice Better portal access
  • Video lessons + written content
  • HPA stage self-assessment tools
  • Stage-adaptive protocol framework
  • Sleep, nutrition, movement guides
  • Breathwork and nervous system tools
  • Lifetime access to all materials
Enrol Now →

Upgrade to The Investigation at any time — £697 applied in full

Most Popular
Tier Two · The Investigation
The Investigation
Programme with DUTCH testing + consultation
£1,497
Includes DUTCH Plus test + 1 strategy session
Everything in The Map, plus
  • DUTCH Plus hormone assessment
  • 1 × strategy consultation (60 min results review)
  • Full cortisol pattern + CAR interpretation
  • HPA stage confirmed — protocol matched to your data
  • DHEA, sex hormones, melatonin, neurotransmitter metabolites
  • Written results summary and stage-specific protocol
  • Test kit dispatched to your address
Enrol Now →

Upgrade to The Case at any time — £1,497 applied in full

Tier Three · The Case
The Case
Full programme with testing and clinical oversight
£2,497
DUTCH Plus + 3 strategy sessions · OAT upgrade available
Everything in The Investigation, plus
  • 3 × strategy consultations across the programme
  • Full clinical oversight at every phase transition
  • Welcome call — HPA history and programme mapping
  • Mid-programme cortisol re-assessment
  • End-of-programme review and long-term plan
  • Direct messaging throughout
  • OAT upgrade option — mitochondrial + neurotransmitter picture
Enrol Now →

Full credits apply on upgrade to TDG Five-Test Programme

Upgrade credits apply at every level. The Map → The Investigation → The Case → the TDG Five-Test Programme. Whatever you invest applies in full at the next level. Your commitment is never wasted.

The DUTCH Plus Assessment

What the DUTCH reveals that no standard test can

A serum cortisol drawn at 9am gives you one data point. The DUTCH Plus gives you 24 hours of hormone data — the full architecture of your stress response, from the morning surge that should drive your motivation to the evening decline that should allow your sleep. Collected at home, at four time points, on dried urine.

Cortisol Awakening Response
Morning drive and readiness
The 50–160% cortisol spike within 30–45 minutes of waking. Blunted CAR explains the person who wakes unrefreshed, struggles to start the day, and needs two hours before functioning properly. Not laziness — a dysregulated morning surge.
Diurnal Cortisol Pattern
The 24-hour rhythm
The full arc of cortisol across morning, noon, evening, and night. An inverted pattern — low morning, high evening — is the signature of Stage 2 dysregulation. The pattern determines everything about timing of interventions, exercise, and sleep support.
Total Cortisol Metabolites
HPA output — Stage identification
Total daily cortisol production. High metabolites with elevated pattern = Stage 1 (activated). Low metabolites with flat pattern = Stage 3 (depleted). The distinction between these requires opposite interventions — adaptogens that stimulate vs those that moderate.
DHEA and DHEA-S
The anabolic counter to cortisol
DHEA is the primary counterbalance to cortisol's catabolic effects. Low DHEA relative to cortisol means the system is running catabolic — breaking down tissue, impairing immune function, accelerating biological ageing. The ratio determines the recovery strategy.
Dopamine + Norepinephrine Metabolites
Neurochemical resilience
HVA (dopamine) and VMA (norepinephrine) reveal the neurotransmitter picture underpinning the stress response. Low dopamine turnover explains flat motivation and reward insensitivity. Elevated norepinephrine explains the hypervigilant, can't-switch-off presentation.
Melatonin (6-OHMS)
Sleep signal and cortisol suppression
Melatonin suppresses cortisol evening output and governs sleep architecture. Low melatonin in the context of high evening cortisol is a clinically significant finding — the two systems are working against each other. This pattern requires specific intervention beyond standard sleep hygiene.
Your Practitioner
SD
BSc (Hons) Developmental Biology
PG Dip Health Informatics
MSc Coaching & Applied Physiology
FDN-P · Metabolic Typing Advisor L2
37 Years Clinical Experience
Edinburgh

Clinical rigour.
Human practice.

Stephen Duncan is a Functional Diagnostic Nutrition Practitioner with a background spanning developmental biology, applied physiology, and over two decades of functional medicine clinical practice in Edinburgh.

The Resilient Stress System™ draws on the same clinical framework that underpins the TDG Five-Test Programme — HPA axis assessment, DUTCH interpretation, and the stress-physiology connections between cortisol, gut function, immune regulation, and metabolic health. It is the entry point for people whose primary clinical picture is stress-driven rather than gut-driven.

For clients whose stress picture intersects with gut dysfunction, hormonal disruption, or metabolic dysregulation, the full TDG programme offers comprehensive five-test investigation with your full RSS investment applied as credit.

Want the complete picture?

The Resilient Stress System™ addresses the HPA axis in depth. For clients whose stress picture connects to gut dysfunction, blood chemistry patterns, or metabolic dysregulation — the TDG Five-Test Programme covers all of it. Your full RSS investment applies as credit.

Explore the TDG Programme →