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In the Japanese population, the decline in ischemic stroke incidence has slowed and MI incidence remains unchanged, likely due to rising metabolic risk factors offsetting improvements in hypertension and smoking.
Our findings suggest that in Japanese, the decreasing trends in the incidence of ischemic stroke have recently slowed down, and there has been no clear change in the incidence of acute myocardial infarction, probably because the benefits of hypertension control and smoking cessation have been negated by increasing metabolic risk factors.
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Hata et al. (2013) studied this question.
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