BRS1(PM6) - GABA–Glutamate Neurotransmission Balance
1. Definition
Balance between inhibitory GABAergic tone and excitatory glutamatergic signalling relevant to attention, reactivity, and inhibitory control.
2. Intervention Breakdown
Food-State Leaning
3. Functional Role
↑ excitation–inhibition balance; ↑ inhibitory tone support
4. Mechanistic Basis
Summary
BRS1(PM6) anchors excitatory–inhibitory balance between GABAergic and glutamatergic signalling relevant to attention, reactivity, and inhibitory control. Dietary patterns supporting GABA synthesis, glutamate handling, and cofactor sufficiency (B6, magnesium, zinc) provide the substrate and biochemical context for BRS1(FM5).
GABA–glutamate balance, inhibition, and network stability
(Excitatory–inhibitory balance as a network property)
Attention and behavioural control depend on the relative balance of excitatory glutamatergic drive and inhibitory GABAergic tone. Shifts in this balance have been implicated in variability in inhibitory control and neurochemical profiles relevant to attention-related conditions → Edden et al. (2012) [1]
(Dietary support across the E/I cluster)
BRS1(PM6) integrates meal-level support from protein context, magnesium- and zinc-containing foods, and B6 adequacy (§5.1), coordinating with BRS1(PM7) and BRS1(PM8) rather than replacing their specific mechanisms → Puts et al. (2020) [2]
(Glycaemic and stress cross-links)
Glycaemic instability and stress load (§5.3) can indirectly affect arousal and inhibitory control, but the primary biological frame for this PM remains E/I neurotransmission balance.
(Key constraint)
BRS1(KC1) provides general amino-acid substrate context for glutamate precursor pools and wider meal quality supporting cofactor intake.
Together, BRS1(PM6) defines the integrative FM-level balance point for inhibitory and excitatory signalling supported by sibling PMs in the same cluster.
5. Underlying Mechanisms and Requirements
5.1 Co-factors
- B6
- magnesium
- zinc
5.2 KCs (Key Constraints)
5.3 Cross-BRS Links
- BRS6-PM1 — Glycaemic Stability
6. Dietary Levers
Diet
- Magnesium ← leafy greens
- Magnesium + zinc ← pumpkin seeds
- protein-rich foods → precursor context.
7. Lifestyle Levers
Lifestyle
- Meal timing and circadian-aligned eating may influence precursor transport and neurotransmitter bias.
- Physical activity and stress recovery practices may modulate catecholamine and autonomic context where listed in interventions.
8. Scoreable Inputs & Modulation Signals
This PM is scoreable through food-state and nutrient signals relevant to gaba–glutamate neurotransmission balance.
Scoreable Input Categories
| Input Category | Example Inputs | PM6 Relevance |
|---|---|---|
| Functional Property Potentials | complete_protein_context; lnna_transport_context; choline_rich_food_matrix | May influence meal-level mechanism support. |
| Realised Functional States | balanced_protein_meal; slow_carbohydrate_pairing | Represent recipe-level realised states. |
| Substance / Nutrient Signals | tyrosine; tryptophan; choline; DHA; B6; iron; magnesium; zinc | Cofactor and substrate signals for this PM. |
| Preparation Transformations | complementary_protein_pairing; minimally_processed_sources | Modify bioavailability and meal-matrix effects. |