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Dementia / Alzheimer's Disease
1Department of Epidemiology and Community Medicine, University of Ottawa, 451 Smyth Road, Ottawa, Canada and Surveillance and Risk Assessment Division, Health Canada. Joan_lindsay@hc-sc.gc.ca
BMC Women'S Health
|September 4, 2004
Summary
Dementia risk, including Alzheimer's disease (AD), significantly increases with age. Regular physical activity shows protective effects, especially in women, highlighting its importance for brain health.
Area of Science:
- Gerontology
- Neurology
- Epidemiology
Background:
- Dementia, including Alzheimer's disease (AD), prevalence rises exponentially after age 65.
- Women, despite similar incidence rates to men, represent a larger number of dementia cases due to longer lifespans and are more often caregivers.
- The aging population will significantly increase the number of individuals with dementia in the coming decades.
Purpose of the Study:
- To analyze the prevalence, incidence, and risk factors of dementia and Alzheimer's disease (AD) in relation to age and sex.
- To identify protective factors against dementia and AD.
- To highlight the disproportionate burden of dementia caregiving on women.
Main Methods:
- The Canadian Study of Health and Aging data was analyzed to determine dementia prevalence and incidence trends.
- Risk factors for AD and vascular dementia were assessed, including age, education, apolipoprotein E epsilon4, physical activity, NSAID use, wine consumption, and vaccination history.
- Caregiver demographics were examined.
Main Results:
- Dementia prevalence doubles approximately every five years of age for both sexes.
- Alzheimer's disease (AD) rates were higher in women, while vascular dementia rates were higher in men.
- Regular physical activity was protective for AD in women; NSAID use, wine consumption, and past vaccinations were associated with decreased AD risk.
Conclusions:
- Promoting regular physical activity across all ages is crucial due to its protective effect against AD.
- Ongoing surveillance of dementia incidence, prevalence, and risk factors is necessary to manage the growing public health challenge.
- Women bear a significant burden as caregivers for individuals with dementia.