Journal
JOURNAL OF ALZHEIMERS DISEASE
Volume 52, Issue 2, Pages 529-538Publisher
IOS PRESS
DOI: 10.3233/JAD-150537
Keywords
Alcohol; Alzheimer's disease; cognitive decline; cognitive impairment; dementia
Categories
Funding
- Australian National Health and Medical Research Council [350833]
- Capacity Building Grant [568940]
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Alcohol consumption is a potentially modifiable risk factor for dementia, but the literature is not completely consistent. This inconsistency may be partly due to an interaction with the apolipoprotein E (APOE) genotype, an established risk factor for Alzheimer's dementia. The aim of this study was to examine whether alcohol consumption is associated with incident dementia or decline in specific cognitive domains over 4 years, and if this effect is modified by APOE epsilon 4 status. Non-demented community dwelling older adults (70-90 years) from an ongoing longitudinal study were assessed for cognitive impairment in attention/processing speed, language, executive function, visuospatial ability, and memory. Incident dementia was diagnosed according to DSM-IV criteria. Compared to those who did not drink in the previous 12 months, neither low consumption (HR 0.64 95% CI 0.3-1.4) or risky consumption (HR 0.58 95% CI 0.2-1.5) was associated with incident dementia. Carriers of the APOE epsilon 4 allele were more likely to develop dementia, but there was no significant interaction with alcohol consumption.
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