Rm. Evans et al., Serum cholesterol, APOE genotype, and the risk of Alzheimer's disease: A population-based study of African Americans, NEUROLOGY, 54(1), 2000, pp. 240-242
A significant interaction among total serum cholesterol (TC), APOE genotype
, and AD risk was found in a population-based study of elderly African Amer
icans. Increasing TC was associated with increased AD risk in the group wit
h no epsilon 4 alleles, whereas TC was not associated with increased AD ris
k in the group with one or more epsilon 4 alleles. Further study of the rel
ationship between cholesterol and APOE genotype is needed to confirm this a
ssociation, but the results suggest that cholesterol may be a potentially m
odifiable environmental risk factor for AD.