Health is commonly approached through disease categories, risk factors, biomarkers, behavioral choices, service delivery, and cost-effectiveness metrics. These approaches remain indispensable, yet they are incomplete when detached from the living biophysical processes through which organisms transform resources into movement, cognition, immunity, repair, relation, participation, and meaning. This white paper proposes mitochondrial life-capacity as an integrative bridge between cellular bioenergetics and life-coherent health. It argues that life-coherent health is the condition in which the organism-niche relation maintains mitochondrial energy transformation, neuroimmune regulation, repair opportunity, and lived participation within restorative margins.
The paper integrates life-coherent health theory, mitochondrial psychobiology, metaboception, mitoception, salugenesis, salutogenesis, allostasis, interoception, affective neuroscience, redox biology, mitochondrial dynamics, autophagy, proteostasis, circadian repair, and organism-niche coupling. It defines mitochondrial life-capacity as the cellular and organismal capacity to transform available resources into coherent biological and behavioral work without excessive redox stress, danger signaling, proteostatic overload, or depletion of repair margins.
When exposure, threat, inflammation, psychosocial stress, hypoxia, toxic burden, circadian disruption, or excessive demand exceed transformation capacity, cells enter compensatory states involving altered electron transport, reductive and oxidative stress, integrated stress response activation, Warburg-like metabolic shifts, mitochondrial fission, mitophagy, autophagy, GDF15 and FGF21 signaling, autonomic activation, HPA-axis mobilization, and behavioral conservation. These compensations are protective responses that become disabling when they remain activated after the initiating demand should have resolved or when the organism lacks the conditions required to complete repair.
The framework interprets fatigue not as mere weakness, lack of motivation, or isolated psychological distress, but as a felt interoceptive signal of constrained energetic affordance: the organism’s inference that further demand may exceed safe transformation capacity. Human flourishing becomes the embodied expression of coherent energy transformation within a life-enabling organism-niche relation.
