Relation of Plasma Lipids to Alzheimer Disease and Vascular Dementia

Abstract
The prevalence of dementia is increasing in western societies, and there are no known measures to prevent or cure it. Conflicting data show that dyslipidemia, a modifiable risk factor, is associated with a higher risk of dementia. Reduced high-density lipoprotein cholesterol (HDL-C)1,2 and apolipoprotein A-I levels,1 as well as increased levels of lipoprotein(a),3 have been observed in vascular dementia (VaD) in some but not all studies.4,5 Contradictory results have been found in studies relating total cholesterol,6,7 HDL-C,3,8,9 and LDL-C6,8 levels with Alzheimer disease (AD).