Dementia is currently one of the main public health challenges worldwide. It is estimated that more than 55 million people live with dementia across the world.
Worldwide prevalence
Estimated growth in the number of people with dementia
0million
2019
0million
2030
0million
2050
Source: WHO, Global status report on the public health response to dementia (2021) · Alzheimer's Disease International
According to data from Alzheimer Europe, it is estimated that there are more than 230,000 people living with dementia in Portugal, with the prevalence rate being the third highest in Europe.
Considering the demographic data of the Autonomous Region of the Azores and the national prevalence estimate of 2.29%, it is estimated that more than 5,500 Azoreans may currently be living with dementia.
Every 3 seconds, someone in the world develops dementia.
Source: Alzheimer's Disease International, World Alzheimer Report
Bibliographic references
Alzheimer Europe. (2025). The prevalence of dementia in Europe 2025. Alzheimer Europe.
https://www.alzheimer-europe.org/Publications/Reports
Instituto Nacional de Estatística. (n.d.). Indicators.
https://www.ine.pt/xportal/xmain?xpid=INE&xpgid=ine_indicadores&contecto=pi&indOcorrCod=0012903&selTab=tab0