§ 1.0
The Cold-Start Problem
A personal behavioral baseline is the most informative reference for physiological interpretation, but it takes roughly 7–30 days of consistent data per signal to stabilize. Before that, a system running on population norms cannot tell a constitutionally high signal from an environmentally elevated one. This is not a data-quantity problem it is a reference-quality problem. Population norms are the wrong reference for an individual, and no amount of additional data collection fixes that.
Reference 1 Population Norms
01
Group-Level
Typicality
Answers whether a reading is typical for the population. Cannot say whether it is typical for this individual a constitutionally high-tone person looks "normal" on every table even when severely suppressed, because the suppressed value still falls in range.
⇄
bridged by
Reference 2 Genomic Anchor
02
Day-Zero
Personalization
Exogenous because genotype is fixed at conception and cannot be caused by downstream behavior, environment, or state available before a single behavioral observation, bridging the gap until a personal baseline stabilizes.
The genetic set point
Ĝ = μ + Σᵢ βᵢ gᵢ
δ = P − Ĝ ~ N(P − μG, σ²G + σ²ε)
§ 3.4
The "Normal for Whom" Reversal
Two people show an identical observed HRV of 55 ms both fall inside the population norm band. Against their genetic set points, the same number means opposite things.
Person A High Set Point
01
δ = −25 ms
Genetic prior predicts 80 ms. Observed 55 ms sits well below expectation. Reading: physiological suppression sleep debt, training load, or chronic stress are the candidate causes.
Person B Low Set Point
02
δ = +25 ms
Genetic prior predicts 30 ms. Observed 55 ms sits well above expectation. Reading: environmental support current conditions are favoring autonomic function beyond constitutional baseline.
§ 4.0
Six Physiological Domains
The decomposition's value depends entirely on the quality of Ĝ, which varies sharply by domain. Strongest anchors carry tight uncertainty bands; weak ones widen the band until larger deviations are required before any attribution is generated.
| Domain | Key gene(s) / set point | Evidence |
|---|
| Metabolic / Appetite | FTO (rs9939609) satiety threshold, resting metabolic rate tendency. The most replicated common variant for body mass in the human genome. | Strong |
| Fatty-Acid / Inflammatory | FADS1/2 constitutive PUFA ratio, systemic inflammatory tone. Two people on identical diets can show different inflammatory baselines genetically. | Strong |
| Stress-Axis / Cortisol | FKBP5 (rs1360780) HPA feedback speed, cortisol-recovery ceiling. Interacts with early-life adversity through epigenetic demethylation. | Moderate–Strong |
| Autonomic Tone | Polygenic (GNG11, RGS6, HCN4) resting HRV, resting heart rate. Real but spread across dozens of loci explaining only 0.9–2.6% of variance. | Moderate, Polygenic |
| Circadian / Chronotype | Polygenic (PER1/2/3, CRY1, ARNTL) constitutional sleep midpoint, circadian phase. 351 loci identified across 697,828 individuals. | Moderate, Polygenic |
| Dopaminergic / Serotonergic | COMT, DRD2, SLC6A4 prefrontal dopamine tone, reward sensitivity, serotonin reuptake. Largely failed large-scale replication. | Weak / Contested |
§ 4.1
Worked Example FTO
A person carries two copies of the FTO risk allele (rs9939609 A/A). Without a genetic anchor, evening snacking and slow satiety responses generate a false behavioral attribution the system ranks poor habits or stress as the top causal candidates. With the exogenous genetic anchor, the deviation from the expected metabolic baseline is much smaller, and the ranked hypothesis correctly identifies a constitutional low-satiety signal amplified by an obesogenic food environment.
0.36
FTO β per risk allele, kg/m² BMI
0.30
FADS1 β, circulating PUFA ratio (SD)
0.19
FKBP5 β, cortisol AUC (SD)
0.04
COMT β, dopamine proxy (SD) weakest tier
Strong metabolic anchors carry 4–9× larger effect sizes than the dopaminergic candidate gene the gap between a real constitutional anchor and a contested one is not subtle.
§ 4.6
The Cautionary Tier
The genes most widely sold in consumer genomics panels are precisely the ones that have failed rigorous large-scale replication. Single-gene thinking applied to massively polygenic traits was always going to disappoint this table is the receipt.
| Gene (variant) | Claimed association | Replication status |
|---|
| COMT (Val158Met) | Prefrontal dopamine, executive function | Enzyme effect robust; behavioral effects small & context-dependent |
| SLC6A4 (5-HTTLPR) | S-allele raises anxiety/depression under stress | Large pre-registered replications found no robust effect |
| MAOA (uVNTR) | "Warrior gene" impulsivity, aggression | Small, inconsistent; documented history of forensic misuse |
| DRD2 (TaqIA) | "Reward deficiency" addiction risk | Density effect debated; modest & contested in meta-analysis |
| DRD4 (7R VNTR) | Novelty-seeking, ADHD risk | Mixed in meta-analyses; effect small |
| DRD3 (Ser9Gly) | Altered D3 affinity, impulsivity | Weak and inconsistent |
§ 5.0
The Causal Ladder
The framework is explicit about what it can and cannot deliver. It climbs only the first rung from observation; stronger causal claims require intervention or counterfactual evidence the framework does not by itself supply.
{{ s.tag }}
{{ s.name }}
{{ row.key }}
{{ row.val }}
§ 6.0
The Prior-Decay Architecture
Because the exogenous genetic anchor is weak, it should not persist at full weight once behavioral data exist. As longitudinal data accrue, the empirical personal baseline progressively replaces the genomic prior as the primary reference settling at a non-zero floor so the anchor keeps contributing for sparse signals and after long data gaps.
Dynamic belief update
Ĝₜ = w(t) Ĝgenomic + [1 − w(t)] P̄ₜ
// w(t) → 1 at cold-start (t = 0); w(t) → wmin > 0 as t → ∞
// floor ≈ 30%: the genetic anchor never fully disappears as an interpretive reference
§ 7.0
Four Constraints for Honest Deployment
Calibrated restraint is the framework's defining discipline. These four constraints exist to prevent a genuinely informative but genuinely weak prior from being used as if it were a verdict.
ConstraintRequirement
{{ t.name }}
{{ t.body }}