What is Dementia?
Dementia is not a natural part of aging. It is caused when a disease damages nerve cells in the brain.
It’s a general term for a decline in cognitive abilities severe enough to interfere with daily life. It affects memory, thinking, communicating, visual spatial judgment, executive function, calculation and decision-making, etc.
In Hong Kong, among individuals aged 70 or above, the prevalence is estimated to be around 10%, while for those aged 85 and above, it rises to approximately 30%. With an aging population, the number of dementia cases is expected to grow significantly in the coming years.

World Alzheimer Report 2015: The Global Impact of Dementia

Sources :
- Department of Health
- Hong Kong Population Projections 2022-2046, Census and Statistics Department

Sources :
- Alzheimer’s Disease International, https://www.alzint.org/about/dementia-facts-figures/