What are the effects of diabetes mellitus on ischemic stroke incidence?
Studies have shown that diabetes mellitus increases the risk of ischemic stroke, with the risk being most prominent before the age of 55 in blacks and before the age of 65 in whites. Furthermore, fasting hyperglycemia is associated with an increased risk of non-hemorrhagic stroke of 3% per year of diabetes duration. Age-specific incidence rates and rate ratios also showed that diabetes mellitus increased ischemic stroke incidence for all ages. However, there is insufficient evidence that the presence of diabetes mellitus or other forms of glucose intolerance had an effect on the rate of ischemic stroke or intracerebral haemorrhage (ICH) in Mexican Americans.