A system and method of monitoring the health of a person. The system comprises at least one sensor capable of measuring at least one physiological signal generated by the autonomic nervous system of the person for providing measurement data, and a data processing system which is configured to store a reference indicator, to receive measurement data from the sensor during a plurality of consecutive health-maintenance sessions in order to collect a plurality of measurement data sets corresponding to said health-maintenance sessions, to determine at last one health indicator based on the measurement data sets, said at least one health indicator being sensitive to physiological state of or changes in the autonomic nervous system, and to compare the at least one health indicator with said reference indicator. Objective information on autonomic nervous system related dysfunctions is retrieved which allows for systematic treatment to the person.