One hundred and eighty three diabetic death cases were collected from 11 clinics in Fukuoka prefecture over the 5 year period 1966-1970. In this study 97 cases were autopsied.
The causes of death among 136 primary diabetes were as follows; vascular complications accounted for cause of death in 67 cases, in which diabetic renal lesion (24 cases) was the most frequent cause and was followed by cerebrovascular (23 cases), cardiovascular diseases (19 cases) and the other (1 case).
Malignant tumors accounted for cause of death in 44 cases. In this group cancer of the stomach (12 cases) was frequent tumor as seen in general population, and next cause was cancer of the pancreas (6 cases).
Infection accounted for cause of death in 7 cases, mostly urinary tract infection.
Diabetic coma accounted for in 6 cases and hypoglycemia in 3 patients.
In this study 47 cases were classified as the secondary diabetes including cirrhosis of liver (24 cases), cancer of the pancreas (9 cases), cancer of the liver with cirrhosis (5 cases), and the others (9 cases).
The outstanding differences between the data reported by Dr. Yoshida in 1961 and the present result are the increment in vascular complications and malignant diseases and the decline in diabetic coma and infection. It is clear that the longevity of the diabetics has increased vascular and malignant diseases and recent advances of the diabetes treatment have decreased the diabetic coma and the purulent disease.