An apparatus for regulating the concentration of glucose in the blood of a person includes: at least one glucose sensor that is arranged to measure the glucose concentration of the person, for example in the interstitial fluid or blood； a pump for selectively introducing at least one substance influencing the blood glucose levels into the body of the person, for instance by at least one cannula or catheter to be inserted into the body of said person, and a control for controlling said at least one substance influencing the blood glucose levels to be introduced to the person based on data received from said glucose sensor. Said apparatus includes at least one further sensor that is arranged to monitor a further characteristic of the person. The at least one further sensor may include an accelerometer, a heart rate sensor, a temperature sensor, a pH sensor, a ketone sensor, a GPS receiver, and/or a skin resistance sensor.
