Binge drinking could increase risk of cognitive decline in older adults

The study analysed data from 5,075 US adults aged 65 and older over eight years. Cognitive function and memory were assessed using telephone interviews, and results showed that those who reported binge drinking at least twice a month were more than twice as likely to experience a higher level of cognitive decline.

Another study by researchers at the National Institute for Health Research and the University of California measured the alcohol consumption of a group of women over a twenty year period. It took note of their previous alcohol consumption habits and assessed the participants at the end of the study for mild cognitive impairment and dementia. It found that heavy alcohol use in earlier life, moderate use in later life and beginning to drink alcohol in later life all increased the risk of developing cognitive impairment. The research was carried out on 1,300 women aged 65 and older.

Alzheimer's Society comment:

'There has been a lot of research into the link between alcohol and dementia. What is becoming increasingly apparent is that while an occasional tipple could actually help to protect the brain, binge drinking could be linked to an increased cognitive decline.

'These latest studies help reinforce the link between heavy drinking and dementia, but we need much more research to better understand exactly how drinking alcohol affects the brain. In the meantime, eating well and exercising regularly are key ways of reducing your risk of dementia.' 

Dr Anne Corbett

Research Manager

Alzheimer's Society

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 Research references:

'20 year alcohol consumption patterns and cognitive impairment in older women' by Tina Hoang, et al presented at Alzheimer's Association International Conference 2012

'Heavy episodic drinking and risk of cognitive decline in older adults' by Ian Laing et al presented at Alzheimer's Association International Conference 2012

Notes to editors:

• One in three people over 65 will die with dementia
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