If the pax condition had been diagnosed correctly onboard the treatment could have been started several hours earlier (at least 3 hours earlier). So from a medical standpoint the patient was poorly served in this diversion. Even giving a piece of hard candy to suck would have been medically sounder than waiting 3 hours to reach a hospital only to find no stroke or heart attack exists. Presumably the best possible procedures and resources were used inflight (defibrillator attached and rules out possible heart attack during its analysis cycle; doctor on-board or consulted by radio determines patient condition). For those not familiar with the medical condition, diabetic shock is a normal part of life for insulin-dependent diabetics ... something went very wrong here. Whether it is the pax fault or some other cause remains to be determined. Medical diversions are getting to be too common and too many turn out to be not only not necessary but in some cases not in the best interest of the patient. A systemic solution is needed.