The mortality rate from cerebral apoplexy on this isolated island is lower than that in Shimane Prefecture and also the nationwide average.The incidence of death due to cerebral apoplexy is low in the elderly but high in middle aged persons.
The mean blood pressure level and the incidence of the hypertension are low compared with findings in Shimane Prefecture and the nationwide average and the incidence of abnormal ECG is also low.
In younger persons, cerebral apoplexy usually develops, therefore, related processes in this disease appear to be related to physical labor, stress and fatigue.In the elderly, the occurrence often develops during the cold weather.
Ingestion of lipids and animal proteins has increased considerably compared with other elements.There is a marked yearly increase in the intake of milk and dairy products followed by eggs, seafood and meat. Thus the low death rate from cerebral apoplexy is probably diet related.