✦ 12-Week Programme

Your gut symptoms
have a root cause.

The Resilient Gut System is a 12-week structured gut restoration programme. Not another elimination diet. A clinical process that identifies what’s actually driving your gut dysfunction — and addresses it.

12Weeks

4Phases

GI‑MAPDNA Testing

37yrClinical Exp.

Join the programme → How it works

Live cohort £1,997 · Evergreen self-paced £497

Why people come to RGS

You’ve tried the elimination diets. Taken the probiotics. Been told IBS is just something you manage.

The problem isn’t your willpower or your commitment. It’s that none of those approaches started with identifying what’s actually wrong. Gut dysfunction has specific, measurable root causes — pathogen burden, microbiome disruption, digestive enzyme insufficiency, gut permeability, immune dysregulation. The intervention has to match the finding.

Without testing, it’s guesswork. The Resilient Gut System starts where every effective intervention should — with data.

IBS & bloating Alternating bowels Abdominal pain Food reactivity Post-meal fatigue Reflux & heartburn Constipation Loose stools Urgency Unexplained fatigue Skin conditions Brain fog

The four phases

A sequenced 12-week process.
The order matters.

You cannot restore what you haven’t identified. You cannot maintain what you haven’t stabilised. This is why generic gut protocols fail — they skip the investigation and jump straight to intervention. Every phase of RGS builds deliberately on the last.

Weeks 1–3

Identify

GI-MAP DNA stool testing plus full intake assessment. Identifying pathogen burden, digestive enzyme output, gut immune markers, intestinal permeability, and microbiome composition. Everything that follows is built on this data — not assumptions.

Weeks 4–6

Remove & Replace

Address specifically what the testing found. Pathogen eradication where indicated. Digestive enzyme support. Targeted dietary modifications based on your reactivity data — not a one-size protocol imposed regardless of findings.

Weeks 7–9

Restore & Reinoculate

Rebuild the gut microbiome with evidence-based probiotic and prebiotic protocols. Restore gut barrier integrity. Support secretory IgA — the mucosal immune defence that chronic stress and dysbiosis deplete.

Weeks 10–12

Maintain & Monitor

Consolidate progress. Establish the dietary, lifestyle and supplement maintenance protocol. Prepare for reassessment testing at six months to confirm sustained improvement and guide the next phase.

What’s included

Testing, interpretation, protocol,
and support. All 12 weeks.

The RGS is not a supplement protocol or a dietary PDF. It is a complete clinical programme — testing, practitioner review, written protocols, structured content, and direct access throughout.

GI-MAP DNA Stool Analysis

35+ markers. DNA-based sensitivity exceeding 95% for pathogens standard culture routinely misses. Kit dispatched to your address.

Practitioner-Reviewed Results

Full clinical interpretation by Stephen Duncan MSc FDN-P. Pattern recognition across all markers. Written notes explaining what your results mean for your specific case.

Written Clinical Protocol

A comprehensive written protocol covering all four phases — dietary, supplementation, lifestyle, and sequenced intervention built around your GI-MAP findings.

12 Weeks Structured Content

Weekly clinical and nutritional education covering the foundations of gut restoration — so the protocol makes sense and you can sustain it beyond the programme.

Check-In Consultations

Structured progress reviews at weeks 4 and 8 to assess response to the protocol, refine where needed, and address any challenges that arise.

Email Support Throughout

Direct email access to Stephen throughout the 12 weeks. Questions answered within 1–2 working days. No chatbot, no template responses.

What RGS addresses

The gut presentations this programme
is designed for.

IBS & Functional Gut Disorders

IBS is a symptom description, not a diagnosis. RGS investigates the specific drivers — pathogen burden, permeability, dysbiosis — that produce those symptoms.

SIBO & Dysbiosis

Small intestinal bacterial overgrowth and microbiome disruption are measurable and addressable. Identification before intervention — always.

Gut Permeability

Elevated zonulin drives systemic inflammation, food reactivity, and immune activation. Zonulin is directly measured in the GI-MAP panel.

Parasites & Pathogens

Blastocystis, Giardia, H. pylori — consistently underdetected by standard culture. GI-MAP sensitivity exceeds 95% for each pathogen.

Food Reactivity

Chronic food reactions are often a consequence of gut permeability and immune dysregulation. Fix the gut and the reactivity picture frequently changes.

Gut-Driven Systemic Symptoms

Fatigue, brain fog, skin conditions, anxiety — often gut-driven. The gut-brain and gut-immune axes mean dysfunction presents far beyond the digestive system.

“In 37 years of clinical practice I have yet to see a genuine case of persistent gut dysfunction where a properly conducted GI-MAP found absolutely nothing. The symptoms are messages. The test reads them.”

Stephen Duncan MSc · FDN-P · Founder, Detective Health

Join the programme

Two ways into the
Resilient Gut System.

Available as a live cohort with group coaching and community, and as an evergreen self-paced option. Both include GI-MAP testing and full practitioner review in the live cohort. Evergreen includes programme content and ordering support.

Live Cohort

Next intake — join waitlist

RGS Live

^£1,997

One-time · GI-MAP included · Group cohort start

✦GI-MAP DNA stool test — dispatched to you

✦Full practitioner review of your results

✦Written clinical protocol for your case

✦12 weeks structured programme content

✦Check-in consultations at weeks 4 & 8

✦Live group coaching calls

✦Community cohort access

✦Email support throughout

Join the waitlist →

Self-paced — start anytime

RGS Evergreen

^£497

One-time · GI-MAP additional · Start anytime

✦12 weeks structured programme content

✦GI-MAP ordering guidance & support

✦Self-directed protocol framework

✦Full programme library access

✦Email support throughout

GI-MAP testing and full practitioner review available as an add-on. Email us after joining.

Join the waitlist →

Not sure which fits? Book a free 15-min call — we’ll advise honestly.

Common questions

Before you join.

Do I need a GP referral?

No. The GI-MAP is arranged privately and dispatched directly to you. No GP referral required. RGS works alongside conventional medicine — it doesn’t replace your GP.

Is the GI-MAP included in the price?

Yes, in the Live cohort (£1,997). In the Evergreen option (£497) the test is arranged separately — guidance and ordering support is included in the programme.

Are consultations in person or online?

All video call. The GI-MAP kit is posted to your address regardless of location. The programme is available across the UK and internationally.

How long before I see results?

Most participants notice meaningful improvement by weeks 6–8. Significant gut restoration takes the full 12 weeks — gut tissue regenerates on a 6–8 week cycle.

Is this suitable for IBD — Crohn’s or colitis?

RGS is primarily designed for functional gut disorders. If you have active IBD, book a call first — we’ll advise whether RGS or the TDG Programme is the better fit for your situation.

What if my GI-MAP is relatively clear?

In 37 years of practice I’ve yet to see persistent gut symptoms where the GI-MAP found nothing relevant. Even a clean pathogen panel provides critical data — sIgA, calprotectin, elastase, beta-glucuronidase all tell a story.

Your gut symptoms
have an explanation.

Join the waitlist for the next live cohort or register interest in the evergreen programme.

Join the waitlist →

Or email hello@detective-health.com with any questions

Your gut symptomshave a root cause.

You’ve tried the elimination diets. Taken the probiotics. Been told IBS is just something you manage.

A sequenced 12-week process.The order matters.

Testing, interpretation, protocol,and support. All 12 weeks.

The gut presentations this programmeis designed for.

Two ways into theResilient Gut System.

Before you join.

Your gut symptomshave an explanation.

Your gut symptoms
have a root cause.

A sequenced 12-week process.
The order matters.

Testing, interpretation, protocol,
and support. All 12 weeks.

The gut presentations this programme
is designed for.

Two ways into the
Resilient Gut System.

Your gut symptoms
have an explanation.