Prevalence and incidence of health problems in people with intellectual disability.
Expect and screen for high rates of vision, hearing, GI, and dementia issues in adults with ID living in residential settings.
01Research in Context
What this study did
Researchers tracked health problems in adults with intellectual disability living in Dutch residential homes. They counted how many had vision, hearing, stomach, and dementia issues.
The group included many adults with Down syndrome. Staff and doctors recorded every diagnosis they could find.
What they found
Almost everyone had at least one extra health problem. Vision and hearing loss were common. Gut troubles and dementia showed up far more than in the general public.
Adults with Down syndrome had the highest rates of dementia and hearing loss.
How this fits with other research
Sandberg et al. (2026) later used Dutch registry data and saw the same pattern across the whole country. They also found cancer is oddly under-diagnosed, likely because screening is skipped.
Williams et al. (2002) zoomed in on stomach problems. They showed 80–90 % of long-stay residents carry H. pylori, the germ that causes ulcers. This explains the gut burden Martin et al. (1997) first counted.
Garwood et al. (2021) tracked U.S. death records and linked these health issues to real harm: adults with ID die more often from choking and lung infections, the very problems that start with poor sensory and swallowing checks.
Why it matters
If you serve adults with ID, build yearly vision, hearing, and dental checks into the care plan. Ask about heartburn, pain, or eating problems—then push for GI tests. Flag anyone with Down syndrome for early dementia screens. These simple steps catch the diseases this study proved are common.
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02At a glance
03Original abstract
The objective of this study was to determine the prevalence and incidence of the most frequent chronic health problems in relation to age in people with intellectual disabilities living in residential facilities in the Netherlands. A prospective cohort study was done with four data collections, each with an interval of one year. Data were collected by means of questionnaires which were completed by each person's physician. Striking results included the reported high prevalence and incidence of visual and hearing impairment, which was even more pronounced in people with Down's syndrome than in people with intellectual disability resulting from other causes. Gastrointestinal problems also appeared to have high incidence rates. Dementia was frequently reported in people with Down's syndrome aged 40 years and older. The results reflect the need for a more predictive policy which can anticipate health problems in people with intellectual disability.
Journal of intellectual disability research : JIDR, 1997 · doi:10.1111/j.1365-2788.1997.tb00675.x