Internal Medicine
Online ISSN : 1349-7235
Print ISSN : 0918-2918
Metabolic Syndrome Increases the Risk of Ischemic Stroke in Women
Kazuo TakahashiHirokazu BokuraShotai KobayashiKenichi IijimaAtsushi NagaiShuhei Yamaguchi
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Volume 46 (2007) Issue 10 Pages 643-648

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Background Metabolic syndrome is a characterized by a cluster of cardiovascular risk factors, including visceral obesity, insulin resistance, dyslipidemia, and hypertension. The criteria for diagnosing metabolic syndrome differ among ethnic groups, due in part to differences in eating habits and body build. Little is known about the relationship between metabolic syndrome and ischemic stroke in Asian countries. The aim of this study was to investigate the relationship between metabolic syndrome and first-time ischemic strokes.
Subjects & Methods Study subjects were 1,493 Japanese adults aged 55 years-old or older with no diabetes mellitus, no history of stroke and no neurological abnormalities, who participated in a voluntary neurological health screening at the Institute of Shimane Health Science, Japan (767 men, 62.0 ± 5.9 years old at entry and 726 women, 61.8 ± 5.1 years old at entry). All subjects were given an annual clinical stroke questionnaire. Clinical details of patients who reported strokes were confirmed with the attending physicians. Each subject was evaluated for an average of 6.4 ± 3.8 years. Metabolic syndrome was defined using the modified criteria for Japanese population published in April 2005.
Results Metabolic syndrome was diagnosed in 11.0% of men and 1.1% of women. Adjusting for age and smoking, female subjects with metabolic syndrome had a 23.1-fold increased risk of suffering ischemic strokes [95% confidence interval (CI), 2.7-196], whereas metabolic syndrome did not increase the risk of ischemic stroke in men.
Conclusions Metabolic syndrome is more likely to influence a risk for ischemic stroke in women than in men.

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© 2007 by The Japanese Society of Internal Medicine
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