Metabolic Pacing: A Load–Capacity Control Mechanism in State-Dependent Physiological Systems, Lantern of Sulfur, v12, April 2026

This work is part of the Lantern of Sulfur (LoS) framework, a systems-level model describing physiological stability as a function of load, pacing, and coordinated system capacity. This paper defines metabolic pacing as the control mechanism governing how input load interacts with system capacity across time. Pacing is conceptualized as the regulation of input magnitude, timing, rate, distribution, and sequence relative to the system’s ability to absorb and process load. Load is treated as a multidimensional input including nutrition, hydration, supplements, environmental exposure, metabolic demand, and stress. Capacity is dynamic and determined by coordinated function across hydration, electrolyte balance, buffering systems, bile flow and motility, and cellular energy. The central claim is that symptom expression reflects mismatch between load and capacity rather than isolated pathology. Identical inputs may be tolerated or destabilizing depending on pacing and system state. This model provides a control framework for understanding variability in symptom expression and for distinguishing stabilizing from destabilizing input patterns. It emphasizes that timing, distribution, and sequence—not just content—determine whether inputs preserve coherence or produce instability. Within the LoS framework, metabolic pacing defines control (load regulation). The clinical stack defines structure (capacity), and clinical translation papers demonstrate real-world system expression. For a complete index of related works, see: https://doi.org/10.5281/zenodo.17915492