Gut-Brain Axis Assessment · Phenotype

The GABA-Depleted Neurobiome Phenotype

GoodOnes Neurobiome · Phenotype · NEURO 04 Calm · ~14% of people

Measured GABA-production capacity reads low — the anxious, wired pattern.
POTENTIATE GABA

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

cohort mean (z=0)Butyrate — buk route-0.47Butyrate — but route+1.00Bile-salt hydrolase (bsh)+0.99GABA production (gadB)-1.44Tryptamine — serotonin precursor (tdc)+1.20Indole / tryptophan shunt (tnaA)-1.32Histamine (hdc)-0.42Tyramine (tyrDC)+0.20p-cresol (hpdB)+0.62Polyamine (speA)+0.44Polyamine (speC)+0.30

How common is this phenotype?

Where your pattern sits among the six measured phenotypes:

NEURO 01 Steady26.4%NEURO 02 Settle24.6%NEURO 03 Flow23.6%NEURO 04 Calm14.6%NEURO 05 Cool8.8%NEURO 06 Rebuild2.1%

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):

OR 1AnxietyOR 1.16Mood issuesOR 1.12Frequent diarrheaOR 1.23Excessive Bowel MovementsOR 1.10

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:

◆ GABA (mimetic)❋ Reishi (botanical)

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 →
Non-therapeutic: potentiate / suppress / support — never treat, cure or diagnose. By GoodOnes™ · Real Good Ones. Capsules or powder, never liquid.

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 →