The World Health Organization estimates that dementia affects more than 55 million people worldwide, however, about 75% of dementia cases go undiagnosed. Alzheimer's disease is the most common type of dementia.
The Alzheimer's Association Facts and Figures report estimates that there were 29,000 older adults (65 years and older) living with Alzheimer's disease in Hawai'i in 2020 and they were cared for by 60,000 family caregivers. By 2025, the number of people living with Alzheimer's disease is expected to rise to 35,000 older adults. This number does not include other types of dementia and the many individuals who may be undiagnosed.