§
There are nearly 18 million
people with dementia in the world today. The number of people with dementia is
expected to increase steadily over the next 25 years (See also Figures 1 and 2
showing age distribution). By 2025 there will be about 34 million people with
dementia in the world By 2025, 71% of
people with dementia will live in developing countries.
§ The overall incidence of dementia increases with age at 1% per year.
This estimate is lower for men and people of African or Asian origin.1 AD is more prominent in Europe and North
America, and in developing countries dementia appears to be rare. These
differences are difficult to explain and may be a result of poor diagnosis and
‘survival bias due to high death rates at all ages’.1
§ AD prevalence among those older than 60 years is about 5% for men
and 6% for women. With a growing aging population, these numbers are expected
to increase rapidly over the next 20 years. 4
Dementia in Europe [i]
§
Work from the European
Community Concerted Action on the Epidemiology and Prevention of Dementia group
(EURODEM) allows countries participating in the study to estimate the number of
people likely to be affected by dementia-provided that the accurate population
statistics are made available.
§ EURODEM is able to provide data on the prevalence of moderate to
severe dementia and determine prevalence rates for men and women in 9 different
age groups. The study includes people living with dementia in institutions,
nursing homes, residential care as well as those living at home. The study was
only based on diagnosed cases of dementia, and the report acknowledges the
problems related to this, since many people fail to get diagnosed and are
therefore excluded.
§ Data for this study comes from the following European countries:
Germany, Finland, France, Italy, The Netherlands, Norway, Portugal, Spain,
Sweden, and UK.
[i] http:// www.alyheimer-europe.org/pages/print_article.php?idart=A2F528F9CF6D.
Alzheimer Europe. Prevalence of dementia. Last accessed March 09, 2004.
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