AGO-ALS Homeostatic Reversal Hypothesis: An Integrative Hypothesis Linking Occlusal Sensory Input to Brainstem, Autonomic, Neuroendocrine, Metabolic, Immune, Sleep and Glymphatic Regulation in Amyotrophic Lateral Sclerosis

Amyotrophic lateral sclerosis (ALS) is characterized by progressive motor neuron degeneration, yet clinical heterogeneity, collateral reinnervation, autonomic dysfunction, metabolic abnormalities, neuroinflammation, sleep disturbance, and rare cases of sustained functional reversal suggest that motor neuron loss alone may not fully explain the observable functional state of every patient. This hypothesis paper proposes the “AGO–ALS Homeostatic Reversal Hypothesis,” an integrative model in which occlusal and periodontal mechanosensory input may influence brainstem sensorimotor and autonomic networks through trigeminal pathways. These networks may, in turn, interact with hypothalamic–pituitary regulation, vagal activity, gastrointestinal and metabolic function, innate immunity, respiration, sleep, glymphatic function, and the efficiency of surviving motor units. The hypothesis does not claim that occlusal intervention has been demonstrated to cure ALS. Rather, it proposes that a potentially reversible functional layer may coexist with irreversible motor neuron loss, and that modifying oral sensory input could be experimentally tested as a means of altering this functional layer. A falsifiable research framework is presented, including reversible occlusal interventions, sham-controlled and ABAB crossover designs, and outcome measures such as ALSFRS-R, MUNIX/MUSIX, neurofilament light chain, respiratory function, heart-rate variability, surface electromyography, tongue pressure, sleep parameters, metabolic markers, and inflammatory biomarkers. The purpose of this work is to provide a physiological framework that can be directly subjected to experimental testing.