Ireland Unprepared for Growing Rates of Dementia in People With Down Syndrome

Ireland is unprepared to meet the complex medical and social needs of a growing population aging with both Down syndrome and dementia, charity advocates warn. It is estimated that 85% of people who reach the age of 65 with Down syndrome develop dementia, while one in three show signs by the age of 50, according to figures cited by Down Syndrome Ireland and reported by rte.ie.

Branch Advocacy Coordinator for Down Syndrome Ireland Gina Grant stated that families are left to navigate an opaque system without adequate state backing.

Ireland holds one of the highest rates of Down syndrome in the world, with an estimated 7,000 to 9,000 adults living with the condition. However, advocates emphasize that national services treat dementia strictly as an older person’s disease, creating a severe service gap for individuals under 65.

Dr Antoinette O'Connor, a consultant neurologist at the National Intellectual Disability Memory Service at Tallaght University Hospital, explained that Alzheimer’s disease creates a ceiling on life expectancy for this population.

The Personal Toll of Cognitive Decline in Meath

Families face acute distress when trying to secure care after loved ones experience sudden life changes alongside cognitive decline. David Azzie, a 60-year-old man with Down syndrome living in a small village in County Meath, began showing accelerated cognitive symptoms after his mother died in May, leaving him to live alone for the first time.

His sister Bernadette Azzie noted a severe drop in his well-being since the summer. His whole world imploded, Ms Azzie said of their mother’s passing. Mr Azzie currently receives two hours of weekday home care from Bluebirds on behalf of the Health Service Executive (HSE), but attempts by his family and disability social worker to secure broader state assistance have stalled.

Mainstream elder-care programs reject applicants who are under 65, while intellectual disability programs face administrative and resource bottlenecks.

Diagnostic Challenges at National Memory Clinics

Detecting neurodegenerative decline in adults with intellectual disabilities presents complex clinical hurdles. Because baseline cognitive function varies widely among individuals with Down syndrome, clinicians struggle to separate normal aging patterns from progressive pathological decline.

Tallaght University Hospital’s Memory Assessment Clinic offers baseline evaluations for individuals over 35 to track changes early. While some patients maintain stable cognitive scores—such as Mandy Finlay, whose memory assessment last year showed an improvement compared to her evaluation at age 40—many others face severe outcomes.

Frieda Finlay, Mandy’s mother, described the emotional toll on her daughter as peers succumb to Alzheimer’s disease or move into full-time nursing home care. She sees friends that don’t recognise her and she finds that very hard, Ms Finlay said.

State Responses and Future Planning Demands

Advocacy groups are pressing government bodies, local councils, and the HSE to establish structured, forward-looking pathways for aging adults with intellectual disabilities. Gina Grant asserted that state support remains sporadic and difficult to access without contactable, dedicated personnel.

In response to inquiries from RTE, the HSE stated that national dementia services are progressing under the Model of Care for Dementia in Ireland 2023. The health service cited an ongoing focus on timely diagnoses, integrated care pathways, and community support systems designed to assist individuals living with the condition.