Summary

The immune system is not one thing — it's three overlapping systems with different genetic determinants, different risk profiles, and different interventions:

Evidence detail

System Overview

The immune system is not one thing — it's three overlapping systems with different genetic determinants, different risk profiles, and different interventions:

1. Innate inflammatory tone (TNF-alpha, IL-6, SOD2): Your baseline inflammatory "set point." These genes determine how much pro-inflammatory cytokine you produce at rest and in response to stimuli (exercise, infection, stress, tissue damage). High innate tone means more aggressive immune mobilisation but also more collateral damage, slower exercise recovery, and chronic low-grade inflammation that drives insulin resistance and cardiovascular disease.

2. Adaptive immune regulation (PTPN22, STAT4, HLA-DQA1): Your immune system's ability to distinguish self from non-self. These genes affect T cell and B cell activation thresholds, Th1/Th17 skewing, and antigen presentation. Variants here don't change daily inflammation — they change your susceptibility to autoimmune misfires where the immune system attacks your own tissues.

3. Oxidative stress management (SOD2): Your mitochondrial antioxidant capacity. SOD2 bridges the inflammatory and metabolic systems — it determines how efficiently you neutralise the superoxide radicals that both drive and result from inflammatory processes.

Why the compound picture matters: A user with TNF AA + IL6 GG + PTPN22 variant has a fundamentally different immune profile than someone with just elevated IL-6. The first person has high inflammatory tone AND a low autoimmune threshold — the immune system runs hot AND is more likely to misfire. The individual entries give per-gene actions. This hub captures where combinations create emergent risk that warrants escalated monitoring or different intervention priorities.

Cross-System Connections

| External System | Gene(s) | How It Connects |
|----------------|---------|-----------------|
| System 1: Methylation | MTHFR (rs1801133) | MTHFR TT → impaired methylation → reduced glutathione synthesis → weaker antioxidant defence. Compounds SOD2 Val/Val for oxidative stress. Also: methylation regulates T cell differentiation — impaired methylation may affect adaptive immune regulation. Methylfolate supplementation addresses both. |
| System 3: Neurotransmitters | COMT (rs4680) | COMT Met/Met → slow catecholamine clearance → prolonged stress response → cortisol dysregulation → immune suppression (acute) or immune dysregulation (chronic). Stress management isn't just mental health — it's immune health. |
| System 4: Vitamins | VDR (rs1544410+rs2228570) | Vitamin D is a potent immunomodulator. VDR variants affect vitamin D receptor sensitivity. Vitamin D suppresses TNF-alpha production, promotes regulatory T cells (anti-autoimmune), and enhances antimicrobial peptide production. VDR + TNF/PTPN22 compound: vitamin D sufficiency is an immune intervention, not just a bone health concern. |
| System 4: Vitamins | FADS1 (rs174547) | FADS1 affects omega-3 conversion efficiency. If FADS1 variant reduces conversion: preformed EPA/DHA supplementation becomes more important for SPM production (resolution mediators that shut down TNF/IL-6). |
| System 5: Cardiovascular | APOE (rs429358+rs7412) | APOE ε4 + high inflammatory compound (TNF AA/IL6 GG) = amplified neuroinflammation. Chronic peripheral inflammation crosses into neuroinflammation — APOE ε4 is more vulnerable. Anti-inflammatory strategy becomes neuroprotective. |
| System 12: Appetite & Weight | FTO (rs9939609) | Adipose tissue is an endocrine organ that produces TNF-alpha and IL-6. FTO-driven adiposity amplifies inflammatory output. Weight management in the FTO + high inflammatory compound is an immune intervention. |

Immune Pathway

Summary

Evidence detail

Sources (5)