The health management system (HMS) is an evolutionary medicine regulative process proposed by Nicholas Humphrey in which actuarial assessment of fitness and economic-type cost–benefit analysis determines the body’s regulation of its physiology and health. This incorporation of cost–benefit calculations into body regulation provides a science grounded approach to mind–body phenomena such as placebos that are otherwise not explainable by low level, noneconomic, and purely feedback based homeostatic or allostatic theories.

Definition of Healthcare Management or Healthcare Administration involves general administration, administration of patient admission and discharge, administration of outpatient departments, and administration of various facilities at a hospital, healthcare clinics, or similar other facilities.