"Alzheimer"s Disease and Dementia in Down Syndrome and Intellectual Disabilities" reviews the biological aspects of Alzheimer"s Disease and dementia, particularly in older adults with Down Syndrome. It brings together findings from research and clinical practice with a multi-disciplinary perspective, and is unique in combining information on Alzheimer"s Disease and its associated dementia in the general population with that of adults with intellectual disabilities. This research is invaluable to medical professionals who provide clinical care to people with Down Syndrome and other intellectual disabilities. It is also vital for academics researching ageing issues in people with Down Syndrome.