BackgroundMetabolic syndrome is a cluster of conditions that occur together, increasing the risk of cardiovascular disease. However, the relationship between metabolic syndrome and dementia has remained controversial. Using nationwide population cohort data, we investigated the association between metabolic syndrome and dementia, according to the dementia type.MethodsWe analyzed data of 84,144 individuals, in the aged group of more than 60 years, between January 1, 2009, to December 31, 2009, at Gangwon province by using the information of the (Korean) National Health Insurance Service. After eight years of gap, in 2017, we investigated the relationship between metabolic syndrome and dementia. We classified Dementia either as dementia of the Alzheimer type (AD) or vascular dementia (VD). AD and VD were defined as per the criteria of International Classification of Disease, Tenth Revision, Clinical Modification codes. Multiple logistic regression analyses examined the associations between metabolic syndrome or five metabolic syndrome components and dementia. Analyses included factors like age, sex, smoking, alcohol, physical inactivity, previous stroke, and previous cardiac disease.ResultsMetabolic syndrome was associated with AD (OR= 11.48, 95% CI 9.03-14.59), not with VD. All five components of metabolic syndrome were associated with AD, independently. (high serum triglycerides: OR= 1.87, 95% CI 1.60-2.19; high blood pressure: OR =1.85, 95% CI 1.55-2.21; high glucose: OR= 1.77, 95% CI 1.52-2.06; abdominal obesity: OR= 1.88, 95% CI 1.57-2.25; low serum high-density lipoprotein cholesterol: OR= 1.91, 95% CI 1.63-2.24) However, among components of metabolic syndrome, only the high glucose level was associated with VD. (OR= 1.26, 95% CI= 1.01-1.56) Body Mass Index (BMI), fasting glucose, and smoking were also associated with AD. A history of the previous stroke was associated with both AD and VD.ConclusionsMetabolic syndrome was found associated with AD but not with VD. Patients with metabolic syndrome had an 11.48 times more likeliness to develop AD compared to those without metabolic syndrome. VD was associated only with several risk factors that could affect the vascular state rather than a metabolic syndrome. We suggested that the effect of metabolic syndrome on dementia would vary depending on the type of dementia.

Background Metabolic syndrome is a cluster of conditions that occur together, increasing the risk of cardiovascular disease. However, the relationship between metabolic syndrome and dementia has remained controversial. Using nationwide population cohort data, we investigated the association between metabolic syndrome and dementia, according to the dementia type. Methods We analyzed data of 84,144 individuals, in the aged group of more than 60 years, between January 1, 2009, to December 31, 2009, at Gangwon province by using the information of the (Korean) National Health Insurance Service. After eight years of gap, in 2017, we investigated the relationship between metabolic syndrome and dementia. We classified Dementia either as dementia of the Alzheimer type (AD) or vascular dementia (VD). AD and VD were defined as per the criteria of International Classification of Disease, Tenth Revision, Clinical Modification codes. Multiple logistic regression analyses examined the associations between metabolic syndrome or five metabolic syndrome components and dementia. Analyses included factors like age, sex, smoking, alcohol, physical inactivity, previous stroke, and previous cardiac disease. Results Metabolic syndrome was associated with AD (OR= 11.48, 95% CI 9.03-14.59), not with VD. Each of five components of metabolic syndrome were also associated with AD. (high serum triglycerides: OR= 1.87, 95% CI 1.60-2.19; high blood pressure: OR =1.85, 95% CI 1.55-2.21; high glucose: OR= 1.77, 95% CI 1.52-2.06; abdominal obesity: OR= 1.88, 95% CI 1.57-2.25; low serum high-density lipoprotein cholesterol: OR= 1.91, 95% CI 1.63-2.24) However, among components of metabolic syndrome, only the high glucose level was associated with VD. (OR= 1.26, 95% CI= 1.01-1.56) Body Mass Index (BMI), fasting glucose, and smoking were also associated with AD. (BMI: OR=0.951, 95% CI= 0.927-0.975; fasting glucose: OR=1.003, 95% CI=1.001-1.005; smoking: OR=1.020, 95% CI 1.003-1.039) A history of the previous stroke was associated with both AD and VD. (AD: OR=1.827, 95% CI 1.263-2.644; VD: OR 2.775, 95% CI 1.747-4.406) Conclusions Metabolic syndrome was associated with AD but not with VD. Patients with metabolic syndrome had an 11.48 times more likeliness to develop AD compared to those without metabolic syndrome. VD was associated only with several risk factors that could affect the vascular state rather than a metabolic syndrome. We suggested that the associations between metabolic syndrome and dementia would vary depending on the type of dementia.

BackgroundMetabolic syndrome is a cluster of conditions that occur together, increasing the risk of cardiovascular disease. However, the relationshipbetween metabolic syndrome and dementia has remained controversial. Using nationwide population cohort data, we investigated the associationbetween metabolic syndrome and dementia,according to the dementia type.MethodsWe analyzed data of 84,144 individuals,in the aged group of more than 60 years,between January 1, 2009,to December 31, 2009, at Gangwon province by using the information of the(Korean) National Health Insurance Service. After eight years of gap, in 2017, we investigated the relationship between metabolic syndrome and dementia. We classified Dementia either as dementia of the Alzheimer type (AD) or vascular dementia (VD). AD and VD were defined according to criteria in the International Classification of Disease, Tenth Revision, Clinical Modification codes.ResultsMetabolic syndrome was associated with AD, while it was not associated with VD. All five components of metabolic syndrome were associated with AD, independently. However, among components of metabolic syndrome, only the high glucose level was associated with VD. Body Mass Index (BMI), fasting glucose and smoking were also associated with AD. A history of the previous stroke was associated with both AD and VD.ConclusionsMetabolic syndrome was associated with AD, while was not associated with VD. VD was associated only with several risk factors that could affect the vascular state rather than a metabolic syndrome. We suggested that the effect of metabolic syndrome on dementia would be different depending on the type of dementia.