Functional Health

Health is presented as a continuous spectrum of function rather than a binary state of disease or no disease. Restoring functional health involves improving cells' capacity for energy generation, nutrient absorption, and signal production. Gradual functional decline can be difficult to notice because people adapt to it incrementally. Optimal health is described as homeostasis, where cells have enough resources to produce energy and signals under balanced nervous system regulation. Functional decline is attributed to factors such as chronic stress, systemic inflammation, inadequate nutrients, and physical inactivity.