Mechanistic case analysis for complex chronic illness

When chronic gut illness keeps returning, the microbiome may be the readout—not the root cause.

Mohammed Attallah, founder of BiomeLogic and developer of the Host Capacity Model
Mohammed Attallah · Founder and mechanistic analystDeveloper of the Host Capacity Model

BiomeLogic reconstructs complex cases across intestinal bioenergetics, microbial ecology, barrier function, immune signaling, autonomic regulation, and mitochondrial capacity—then turns the reasoning into a structured report for discussion with your licensed care team.

Designed for recurrent SIBO, MCAS-like presentations, post-viral illness, dysautonomia, expanding food reactions, and cases that remain fragmented across multiple specialists.

Explore the Host Capacity Model →

Educational systems-biology consulting. Not diagnosis, treatment, or medical care.

Best suited for
Complex, treatment-resistant, multisystem cases
Common patterns
SIBO · MCAS-like reactivity · post-viral illness · dysautonomia
Core deliverable
Live analysis plus a written mechanistic report
Scope
Educational analysis for discussion with licensed clinicians

Case synthesis

schematic

01 · Fragmented inputs

  • Stool / breath testingconflicting
  • Serology & inflammationwithin range
  • Symptom chronology12 years
  • Prior interventions17 recorded

02 · Reconstruction layers

  • Epithelial bioenergeticsL1
  • Microbial ecologyL2
  • Barrier & immune signallingL3
  • Autonomic regulationL4

03 · Structured output

Leading hypothesis
Host-capacity limited
Competing explanations
3 retained
Unexplained findings
Listed, not hidden

Delivered as a written mechanistic report

Illustrative schematic of the analysis structure. Not a real client case.

When the case no longer fits one specialty

Complex symptoms often persist because the system is being examined in fragments.

BiomeLogic is designed for cases in which gastrointestinal, immune, autonomic, metabolic, and post-viral findings may be interacting—but have repeatedly been evaluated as separate problems.

  1. 01SIBO that repeatedly returns after treatment.
  2. 02MCAS-like or histamine symptoms that remain unstable.
  3. 03Food reactions that continue expanding or changing.
  4. 04Post-viral illness accompanied by gastrointestinal decline.
  5. 05hEDS, POTS, dysmotility, and mast-cell symptoms occurring together.
  6. 06Mitochondrial-pattern symptoms despite inconclusive routine testing.
  7. 07Extensive testing without a coherent causal map.

Check whether your case fits →

What you actually receive

Not another protocol. A mechanistic reconstruction of your case.

  1. Case reconstruction

    Symptoms, chronology, laboratories, imaging, prior interventions, medications, supplements, contradictions, and unresolved findings are reviewed as one system.

  2. Competing hypotheses

    The analysis distinguishes leading mechanisms from alternative explanations, missing evidence, and findings that do not fit.

  3. Live consultation

    A 60–90 minute session tests the proposed model against the details that may not appear in the records.

  4. Written report

    You receive a structured mechanistic analysis designed to be shared and discussed with your licensed care team.

Consultation
60–90 minutes
Written report
Included
Standard consultation
$650
Format
Remote worldwide

The framework

The Host Capacity Model asks what made the altered microbial state sustainable.

Many approaches begin with microbial composition: identify the organisms, reduce them, and expect the intestinal environment to recover. In recurrent cases, that sequence may be incomplete.

The Host Capacity Model examines whether impaired epithelial fuel use, mitochondrial capacity, oxygen-gradient regulation, barrier integrity, immune signaling, or motility has changed the habitat in which the microbiome operates.

This is evaluated as a candidate explanatory framework—not assumed to be the cause of every case. The analysis must account for competing mechanisms and findings that the model cannot explain.

  1. 01Colonocyte bioenergetics
  2. 02O₂ gradient
  3. 03Habitat shift
  4. 04Endotoxin / metabolites
  5. 05Gut barrier
  6. 06Immune / mast cells
  7. 07Systemic symptoms
A candidate feedback model. Individual cases may enter the cycle through different mechanisms, and not every pathway will apply to every person.

Inspect the work before you commit

Evaluate the reasoning—not marketing claims.

BiomeLogic publishes its analytical structure openly so prospective clients and clinicians can examine the quality, limits, and transparency of the work.

Sample mechanistic report

The structure of the written deliverable: causal hypotheses, evidence tiers, competing explanations, contradictions, and questions for clinician discussion.

View the sample report
Worked case analysis

A long-form reconstruction of a complex case, including what the Host Capacity Model explained and what it did not.

Read the worked case
Scientific accountability

Review the framework audit, counterarguments, and claim ledger used to separate established physiology from mechanistic inference.

Review the evidence architecture

BiomeLogic does not publish anonymous or illustrative testimonials. Verified client statements, when clients choose to leave them, appear on the testimonials page.

Selected research

Start with the recurring questions.

SIBO

Why Does SIBO Keep Coming Back After Treatment?

Recurrent SIBO may represent an equilibrium state of an unaddressed host substrate failure. Antimicrobials reduce overgrowth without restoring the colonocyte bioenergetic capacity that defines which microbes can dominate. A Host Capacity Model reading of the recurrence cycle, the SLC5A8 / Fe-S / CD38-NAD+-SIRT3 mechanisms behind it, and what an HCM-anchored approach actually looks like.

16 min · May 2026

MCAS & Mast Cells

Why Does MCAS Not Respond to Standard Treatment? The Four Mechanistically Distinct Patterns

Treatment-resistant MCAS may, in a subset of people, be a stratification problem rather than a stabilization problem. At least four candidate mechanistic patterns can contribute to the MCAS phenotype — barrier-driven, neuroimmune/vagal, chemical/toxicant, and clonal/KIT-driven — and they require different upstream interventions. A Host Capacity Model reading of why cromolyn, ketotifen, and the standard stack fail, and what stratification-anchored care looks like.

18 min · May 2026

Browse all mechanistic writing →

Scope and clinician compatibility

Mechanistic analysis with explicit boundaries.

BiomeLogic provides educational systems-biology analysis. It does not diagnose, prescribe, treat, triage, or replace licensed medical care. Major claims are separated by evidence level, and written analyses are designed for discussion with the client's licensed medical team.

Based in Bowie, Maryland, United States, working remotely worldwide. Maryland & DMV consulting →

Start with fit—not payment

Does your case require a different level of analysis?

Gate 1 is a free, five-minute written fit screen. No files, laboratory reports, or payment are required. You will receive a written response within two business days.

No medical advice is provided during the fit screen or discovery call.