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Alcohol related brain damage
Dr Louise McCabe
Lecturer in Dementia Studies
University of Stirling
Today’s presentation
• What is ARBD?
• Prognosis
• Prevalence
• Individual factors
• Findings from research
• Concluding comments
Alcohol related brain damage• A group of conditions where alcohol is
determined as the primary reason for brain damage with similar outcomes but different specific causes– Wernicke Korsakoff Syndrome– ‘Alcohol induced persistent dementia’– Alcohol-related dementia (and so on)
Alcohol and the brain• Alcohol damages the brain in a number of ways:
– Direct toxicity to the brain cells– Interference with vitamin absorption– Falls and accidents– Vascular damage/hypertension– Indirect nutritional deficiencies due to poor diet
• Susceptibility differs between individuals, drinking patterns and different drinks
ARBD linked to:• Liver cirrhosis (hepatic encephalopathy)
• Socio-economic factors such as deprivation – multiple factors contribute
• Patterns of drinking
• Types of alcohol drunk
• Genetics – potential link
Wernicke Korsakoff’s• Acute phase (Wernicke’s encephalopathy)
– delirium type symptoms
• Vitamin treatment – parenteral thiamine
• Without treatment– 20% die– 85% develop long term symptoms
(Korsakoff’s syndrome)
Alcohol related dementia
• Alcohol use is a risk factor for dementia– 9-23% of older people with a history of alcohol abuse
have dementia compared with 5% of the general population
– People with dementia are more likely to have alcohol problems than those who do not have dementia
• Alcohol related dementia has a higher prevalence than WKS and is likely to have multiple causes – a ‘silent epidemic’
ARBD prognosis• Better prognosis than common types of
cognitive impairment with abstinence• Continued abstinence allows brain to
recover and stability in symptoms is seen, this may be a good indicator that an individual has ARBD
• Recovery can take up to two years
• ¼ recover fully
• ¼ good recovery
• ¼ minimal recovery
• ¼ no recovery – but stability in symptoms
Prevalence of ARBD• Not known and not included in recent
epidemiological studies (e.g. DementiaUK)
• Probably rising (fast)
• Estimates: – 10% of dementia cases (Harvey 1998)– 21-24% of dementia cases have alcohol as
contributing factor (Smith and Atkinson 1995)
Local prevalence of ARBD• Some local authorities have estimated
figures
• Some populations much higher prevalence: e.g. hostel population in Glasgow, 21%
• Other indicators: Pabrinex prescribing – increasing steadily
10 year increases in ARBD hospital discharges
(Ayrshire and Arran report, 2008)
Rates per 10,000 96 – 99
Rates per 10,000 03-06
& increases
Scotland 3.2 4.3 34%
West of Scotland 4.1 5.3 31%
East of Scotland 2.8 3.7 33%
Deprivation and ARBD• There is little difference in the amount
drunk by different socio-economic groups in Scotland but there is a big difference in the amount of alcohol related morbidity when levels of deprivation are compared
• ARBD prevalence linked to levels of deprivation
• WKS directly linked to poor nutrition
ARBD and age• Alcohol related neuropsychiatric conditions
are found to increase with age
• Older brains and bodies more susceptible to damage from alcohol
• Alcohol misuse common among older men and increasing among older women
• Alcohol misuse significantly under-diagnosed among older people
Prevalence: age and gender
• Still more men than women but increasing in both groups
• Still more among late middle age and older age groups
• More older people with ARBD in hospital compared with younger people with ARBD
Stigma
• Research shows stigma for:– Cognitive impairment (dementia)– Alcohol as a moral issue– Ageing and ageism
• Stigma evident at all levels of society – individual, institutional and cultural
Stigma evident in specialist services
• Research in specialist homes/units for people with ARBD found no involvement by alcohol specialists
• Some staff in specialist homes felt ARBD was self-inflicted – ‘nobody is taking them and pouring the drink down them’
Lack of awareness in specialist services
• Experienced staff didn’t seem to understand – link between alcohol and brain damage
– Importance of abstinence
Awareness among publicans
• They don’t bring up the link between alcohol use and cognitive impairment or brain damage but do know about it and have experience of it
• ARBD not included in training or health promotion materials and activities
Barriers to effective support• Lack of awareness and stigma
• Long period of rehabilitation and recovery difficult to deal with
• Fall between the gaps:– Alcohol services not equipped to deal with
cognitive impairment– Dementia services not equipped to deal with
alcohol problems
ARBD – policy responses in Scotland
• Alcohol problems have been and continue to be a key concern of governments
• Focus is usually on younger people, families and children – not ageing and cognitive impairment
But • In 2003 two expert groups set up: dual diagnosis and
ARBD• In 2006 Alcohol and ageing working group convened• In 2007 – Commitment 13
Concluding comments• Need more research on prevalence and
epidemiology
• Need better understanding of prognosis and treatment
• Need evaluations of successful services and identification of routes for knowledge transfer