The therapeutic methods of treating Japanese cases of diabetes with in
sulin have been developed following the lead of the USA and European c
ountries. With support from the National Health Care System, most clin
ics have been able to provide relatively good care of diabetic patient
s under treatment, but judging from the increase in the number of pati
ents with chronic diabetic complications, the development of better me
thods of treatment and their wider application is a matter of great ur
gency.