Diet, Nutrition & Supplements
How this body handles caffeine, dairy, salt, fats and key vitamins — and which supplements actually have a genetic reason to exist.
The biology user manual
Ten reports, one readable body of work
Each Gene Compass set is a ten-volume "biology user manual" — themed deep-dives where every claim traces back to a specific row in the raw data file. Below: the full table of contents, and real sample pages built on the fictional demo profile, Alex M.
Disease Risk & Prevention
Where a little extra prevention is a smart bet — framed as levers to pull, never as fortunes told.
Metabolic Health
Blood sugar handling, insulin signaling and weight set-point tendencies — the quiet machinery behind energy.
Exercise & Physical Optimization
Muscle fiber bias, recovery speed, injury susceptibility — and the training style this particular body rewards.
Methylation & Detoxification
The folate cycle, MTHFR and friends, and the liver's two-phase cleanup crew — minus the internet hysteria.
Neurotransmitters & Cognition
Dopamine, serotonin, stress chemistry and focus — why brains run differently, written with affection.
Gut Health & Digestion
Intolerances, histamine, the gut-brain phone line — and which "everyone should eat this" advice to ignore.
Pharmacogenomics & Drug Metabolism
How this body processes common medications. The volume most worth handing to a physician.
Hormonal Health & Metabolism
Thyroid conversion, cortisol rhythm and hormone clearance — the body's slowest, deepest currents.
Systems Integration
The conductor's score: how all nine reports connect into one coherent plan — and the ten daily non-negotiables.
Sample pages
Read it like the family does
Three excerpts, one per theme. All genotypes belong to "Alex M.", the invented demo profile — the structure, tone and depth are the real thing.
Priority key:
High top priority
Act clear action
Good favorable
Info context
Report 1 · Diet, Nutrition & Supplements · Section 4
Caffeine: living with a slow-burner gene
What the gene does. CYP1A2 is the liver enzyme responsible for clearing roughly 95% of the caffeine you drink. One letter in its control region — the marker rs762551 — largely decides whether you're a "fast" or "slow" caffeine metabolizer.
What Alex's variant means. Alex carries AC — one slow copy. Practically, caffeine's half-life stretches toward eight hours: a 3 p.m. americano still has half its caffeine on board at 11 p.m., quietly trimming deep sleep even when falling asleep feels easy.
| Gene | Marker | Genotype | Reading | Priority |
|---|---|---|---|---|
| CYP1A2 | rs762551 | AC | Slow caffeine metabolizer | Act |
| ADA | rs73598374 | GG | Typical deep-sleep pressure — worth protecting | Info |
What to do about it
- Keep coffee glorious — and finished by noon.
- Switch to decaf or herbal tea for the afternoon ritual; the ritual matters more than the molecule.
- If sleep ever feels shallow, audit caffeine first. It's the cheapest experiment in this entire manual.
Report 6 · Neurotransmitters & Cognition · Section 2
COMT: the worrier's gift
What the gene does. COMT breaks down dopamine in the prefrontal cortex — the brain's planning department. The rs4680 marker creates two famous versions: "warrior" (fast clearance, grace under pressure) and "worrier" (slow clearance, rich focus).
What Alex's variant means. Alex is AA — full "worrier." Dopamine lingers, which is why deep work feels natural and details rarely escape. The tax: after stress, the chemistry takes longer to drain. Rumination isn't a character flaw here; it's pharmacokinetics.
| Gene | Marker | Genotype | Reading | Priority |
|---|---|---|---|---|
| COMT | rs4680 | AA | "Worrier" — slow dopamine clearance, deep focus | Info |
| BDNF | rs6265 | CT | Exercise pays an outsized mood dividend | Act |
What to do about it
- Schedule hard thinking for the morning; protect it like an appointment.
- Build a deliberate "off-ramp" after stressful events — a walk, slow breathing, anything rhythmic.
- Treat exercise as mood infrastructure, not vanity. For this genotype it's doubly true.
Report 8 · Pharmacogenomics & Drug Metabolism · Section 1
The report worth handing to a doctor
What this report covers. A family of liver enzymes — the CYP450s — processes most common medications. Variants in these genes are why one person's standard dose is another person's "that did nothing" and a third person's "that hit way too hard."
What Alex's variants mean. Alex reads as a normal metabolizer for the two pathways sampled below — useful, boring news. The point of this volume isn't drama; it's that a physician adjusting a prescription deserves to see this page first.
| Gene | Marker | Genotype | Reading | Priority |
|---|---|---|---|---|
| CYP2C19 | rs4244285 | GG | Typical processing of several common prescriptions | Good |
| VKORC1 | rs9923231 | CT | Intermediate warfarin sensitivity — flag if ever relevant | Act |
What to do about it
- Keep this report with your medical records — it earns its keep the day a new prescription appears.
- Never adjust any medication based on a report like this alone. It's a conversation starter for a clinician, full stop.
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