A system for managing healthcare of a living subject, the system comprising: a system memory storing a plurality of medical profiles each for a corresponding one of a plurality of living subjects, each of the plurality of medical profiles having a custom target range for a physiological parameter of the corresponding one of the plurality of living subjects, wherein the custom target range is uniquely determined based on medical history data of the corresponding one of the plurality of living subjects taken when the respective living subject is in homeostasis; and a hardware processor configured to execute a software code to: receive medical history data of the living subject, the medical history data including a plurality of data entries corresponding to at least one physiological parameter of the living subject; determine the custom target range for the at least one physiological parameter based on the medical history data of the living subject; and store the custom target range for the at least one physiological parameter in the medical profile of the living subject; receive sensing signals for a living subject from a device configured to monitor a physiological parameter of the living subject; obtain, from the sensing signals, a present measurement of the physiological parameter; retrieve the custom target range for the physiological parameter from the medical profile of the living subject; compare the present measurement of the physiological parameter with the custom target range for the physiological parameter retrieved from the medical profile of the living subject; and provide a result of the comparison of the present measurement of the physiological parameter with the custom target range for diagnosis. a system memory storing a plurality of medical profiles each for a corresponding one of a plurality of living subjects, each of the plurality of medical profiles having a custom target range for a physiological parameter of the corresponding one of the plurality of living subjects, wherein the custom target range is uniquely determined based on medical history data of the corresponding one of the plurality of living subjects taken when the respective living subject is in homeostasis; and a hardware processor configured to execute a software code to: receive medical history data of the living subject, the medical history data including a plurality of data entries corresponding to at least one physiological parameter of the living subject; determine the custom target range for the at least one physiological parameter based on the medical history data of the living subject; and store the custom target range for the at least one physiological parameter in the medical profile of the living subject; receive sensing signals for a living subject from a device configured to monitor a physiological parameter of the living subject; obtain, from the sensing signals, a present measurement of the physiological parameter; retrieve the custom target range for the physiological parameter from the medical profile of the living subject; compare the present measurement of the physiological parameter with the custom target range for the physiological parameter retrieved from the medical profile of the living subject; and provide a result of the comparison of the present measurement of the physiological parameter with the custom target range for diagnosis. receive medical history data of the living subject, the medical history data including a plurality of data entries corresponding to at least one physiological parameter of the living subject; determine the custom target range for the at least one physiological parameter based on the medical history data of the living subject; and store the custom target range for the at least one physiological parameter in the medical profile of the living subject; receive sensing signals for a living subject from a device configured to monitor a physiological parameter of the living subject; obtain, from the sensing signals, a present measurement of the physiological parameter; retrieve the custom target range for the physiological parameter from the medical profile of the living subject; compare the present measurement of the physiological parameter with the custom target range for the physiological parameter retrieved from the medical profile of the living subject; and provide a result of the comparison of the present measurement of the physiological parameter with the custom target range for diagnosis.