A global meta-analysis projects annual new dementia cases could reach 24.7 million by 2050, up from 11.4 million in 2023, if age- and sex-specific incidence rates hold steady.
Published in JAMA Neurology, the analysis combined 22 long-term studies of 38,418 people across 18 countries and territories. It estimates annual incidence, meaning new cases, rather than everyone living with dementia.
The study’s age-standardized estimates were 10.6 cases per 1,000 person-years for women and 8.6 for men. Estimated rates were 13.6 in low- and middle-income countries and 8.3 in high-income countries. The projection keeps age- and sex-specific rates constant; it does not assume those rates will rise.
The Guardian cited longer life expectancy as one reason more people are reaching ages when dementia is common. A separate U.S. study, published in Nature Medicine in 2025, projected annual new cases would rise from about 514,000 in 2020 to about 1 million in 2060. It applied its estimates to U.S. Census population projections, making it a country-specific estimate with a different time horizon from the global analysis.
U.S. nursing homes also report current staffing constraints. The American Health Care Association’s March 2024 survey of 441 nursing-home providers found 94% had difficulty recruiting staff and 46% limited admissions because of labor shortages. Those survey results describe providers’ reported conditions; they are not estimates of staffing needs associated with future dementia cases.
The Guardian described direct-care work as physically and emotionally demanding, with low wages, unpredictable hours and limited advancement. Jordan Weiss, an assistant professor at NYU Langone’s Optimal Aging Institute, told the newspaper, “Families will be absorbing enormous emotional and financial costs.”
