Overview
- An analysis by DZNE and Harvard estimates 36% of dementia cases in Germany are attributable to 12 modifiable risk factors drawn from representative 2023 survey data.
- Depression, hearing loss, low educational attainment, overweight, and diabetes account for the largest shares of risk in the German population.
- Modeling suggests a 15% reduction in these risks could avert about 170,000 cases by 2050, rising to more than 330,000 with a 30% reduction.
- Germany has about 1.8 million people living with dementia today, and researchers project roughly 2.7 million by 2050 without enhanced prevention.
- Experts urge targeted prevention integrated into primary care and social policy—such as access to mental-health treatment and hearing aids—while noting overlapping risks mean estimates are approximate.