BRS6(KC1) - Glucose / Energy Substrate Availability
1. Definition
Availability of stable meal-derived energy substrates required to support neuroendocrine stress allocation without excessive glycaemic volatility.
2. Constraint Role
Maintains blood-derived glucose and energy substrate continuity for tissues with high and continuous fuel demand. The brain depends on a steady supply of glucose from the circulation for normal physiological function [2]. This KC enables effective operation of glycaemic, HPA-axis, and metabolic-load FMs and their dependent PMs when meal-derived substrate delivery remains sufficient rather than sharply fluctuating.
3. Supporting Inputs/Substrates
- Dietary fat
- Dietary protein
- Mixed macronutrient meal matrix
- Slow-release carbohydrates
- Viscous/soluble fibre classes
4. Biological Importance
Neuronal activity requires tightly regulated cerebral glucose metabolism coordinated with energy demand [2]. Dietary carbohydrate quality and fibre-rich food patterns influence post-prandial glycaemic load and variability at the population level [1]. When substrate delivery is erratic or marked by large glycaemic excursions, systems depending on predictable fuel supply—including cognitive energy availability and stress-axis allocation—face greater physiological strain [1][2].
5. Connected Mechanisms
- Functional Mechanisms
- Primary Mechanisms
- BRS6-FM1-PM1 - Glucose Appearance Kinetics
- BRS6-FM1-PM2 - Glycaemic Variability Regulation
- BRS6-FM1-PM3 - Insulin Sensitivity & Glucose Disposal
- BRS6-FM2-PM4 - Cortisol Rhythm Regulation
- BRS6-FM2-PM5 - Circadian Feeding & Light–Dark Entrainment
- BRS6-FM4-PM8 - Metabolic Inflammation & Adipose Stress Signalling