The GABA-Depleted Neurobiome Phenotype
GoodOnes Neurobiome · Phenotype · NEURO 04 Calm · ~14% of people
In plain terms
GABA is the brain's main 'calm down' signal, and certain gut microbes help make it. In this phenotype the measured GABA-production capacity reads clearly below the cohort mean — one of the most distinct single-pathway deficits in the panel.
It's the anxious, wired pattern: tension, a racing mind, and trouble settling at night.
The move is to potentiate the calm side — strains that make GABA, GABA supplied directly via a mimetic, and a botanical that helps the system settle.
The gut-brain mechanism, in depth
Gut microbes carrying glutamate decarboxylase (gadB) convert glutamate into GABA. GABA acts locally on the enteric nervous system and signals the brain through the vagus nerve; low microbial GABA capacity is associated with a less-buffered, more excitable state. In this phenotype gadB reads low, alongside a low indole/tryptophan read.
Because the deficit is a production gap, the formula both potentiates GABA-producing strains and supplies GABA directly through a mimetic, with Reishi to settle the system — supplying the signal while rebuilding the capacity to make it.
Your measured signature
Measured functional capacity across the 11 gut-brain pathways — read from targeted gene markers in your sequencing data (not inferred from which microbes are present), and CLR-normalized so pathways compare across people. In this phenotype (measured prevalence 14.6%, n = 613 of ~4,194 clustered samples) the standout readings are:
| GABA production (gadB) | ▼ low | z = -1.44 |
| Indole / tryptophan shunt (tnaA) | ▼ low | z = -1.32 |
| Tryptamine — serotonin precursor (tdc) | ▲ high | z = +1.20 |
| Butyrate — but route | ▲ high | z = +1.00 |
| Bile-salt hydrolase (bsh) | ▲ high | z = +0.99 |
| p-cresol (hpdB) | ▲ high | z = +0.62 |
z = standard deviations from the cohort mean. These clusters come from the measured capacity alone and are not an artifact of sequencing batch (cluster/run agreement ≈ 0).
Signature chart — measured capacity across the 11 gut-brain pathways
How common is this phenotype?
Where your pattern sits among the six measured phenotypes:
Does this sound like you?
Framed as tendencies, not a diagnosis:
In the gut: Stress-linked gut changes — loose stools or urgency when anxious.
In mood & mind: Anxiety, a mind that won't switch off, tension, and trouble falling or staying asleep.
What the data shows
Across our microbiome dataset (n = 603 in this phenotype), these self-reported conditions were more common in this pattern than at baseline — associations, not a diagnosis:
| Anxiety | 59% report it | OR 1.16 | q = 0.30 |
| Mood issues | 55% report it | OR 1.12 | q = 0.48 |
| Frequent diarrhea | 25% report it | OR 1.23 | q = 0.17 |
Note: in this phenotype no symptom reached FDR significance — the reports above sit at or near the population base rate. That is the core finding of the analysis: symptoms are orthogonal to phenotype. The same complaint (say, anxiety) spreads across all six phenotypes at close to base rate, so a symptom can’t tell you your biology — only the measurement can.
Top associations (none reached FDR significance in this phenotype — see note above):
What your formula does
The matched formula’s action is POTENTIATE GABA — rebuild the depleted pathway by adding producing strains and supplying the metabolite directly.
Neuro-actives layered on the probiotic base:
Take it into your own hands
Your phenotype points to specific, self-directed levers — the “be your own biohacker” angle. None of this is medical treatment; it’s how to feed the pathway the measurement flagged:
- Rotate in fermented foods — some cultures raise GABA.
- Eat magnesium-rich foods (leafy greens, nuts, seeds, legumes); magnesium supports calm signaling.
- Practice vagal down-regulation: slow exhale-lengthened breathing, humming, cold-water splashes.
- Protect sleep and taper late-day caffeine — stimulants deepen a wired baseline.
One honest caveat
Your quiz result is a symptom-based pattern, not a verdict — and symptoms are orthogonal to biology, so a measured gut test is what confirms your true phenotype. Everything here is educational and non-therapeutic: formulas potentiate, suppress or support gut-brain pathways; they do not treat, cure or diagnose disease.
Your matched formula
Your result matches the GoodOnes formula built for this gut-brain pattern: Calm. Start there — or confirm your true phenotype first with a measured whole-genome (WGS) test.
See the Calm formula →Confirm it with a test
This result is a symptom-based read — a strong starting point, not a verdict. Symptoms and your actual gut biology are only loosely linked, so the one way to know your true phenotype is to measure it. A whole-genome (WGS) microbiome test reads the real gut-brain gene signatures shown above — the same pathways (butyrate, GABA, serotonin, bile acids) — from your own sequencing data, so your formula is built on measured capacity, not a guess.
Measure your neurobiome →