This is an epidemiological research paper on the "Case Control Study of Risk Factors for Alzheimer's Disease". It discusses the background of this disease, study design, survey instrument, risk factor involved, statistical analysis and potential biased information about this disease. This paper briefly reviews biological evidence suggesting that alcohol use may be associated with this disease. It also focuses on the evidence from epidemiological studies that link people's consumption of alcohol to whether they develop Alzheimer Disease, considers the influence of tobacco use on the relationship between alcohol use and Alzheimer's Disease, and examines the epidemiological evidence of the connection between alcohol consumption and types of cognitive impairment other than Alzheimer's disease.
