Prevalence of dementia diseases
The Alzheimer Disease International (ADI) association regularly publishes up-to-date figures on the global prevalence of dementia as part of its World Alzheimer Reports. An overview of the reports can be found here: https://www.alzint.org/reports-resources/
The information on the prevalence of dementia in Germany is based on these sources:
Deutsche Alzheimer Gesellschaft e. V. Selbsthilfe Demenz (2019). Informationsblatt 1. Die Häufigkeit von Demenzerkrankungen. https://www.deutsche-alzheimer.de/fileadmin/alz/pdf/factsheets/infoblatt1_haeufigkeit_demenzerkrankungen_dalzg.pdf
Glaeske, G. (2020). Demenzreport 2020. Socium. https://www.socium.uni-bremen.de/uploads/News/2020/hkk_Demenzreport_2020_Web.pdf