Abstract
Dementia is a syndrome of global cognitive disability and is not a single disease. There are many risk factors of dementia, and some factors are adjustable. Therefore it is important to have knowledge about dementia risk factors, and modulate the risk factors for prevention of dementia. Through this paper, we review the risk factors for dementia with unadjustable factors (age, sex, genetic factors) and adjustable factors (diabetes melitus, hypertention, hypercholesterolemia, hypothyroidism, alcohol intake, depression, etc) in the aspects of the impact of them on the incidence of dementia.
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