Dementia Cases Expected to More Than Double by 2050
A new study projects that annual dementia diagnoses could more than double by 2050, with women and individuals in low- and middle-income countries identified as most at risk.
The number of annual dementia diagnoses is projected to more than double by 2050, reaching an estimated 24.7 million cases, up from 11.4 million in 2023, according to new research. The study, published in JAMA Psychology by Australian researchers, highlights disparities in risk.
Women and individuals living in low- and middle-income countries face higher rates of dementia, a trend expected to continue. Researchers emphasized the urgency for prevention efforts, noting the significant pressure on individuals, families, health systems, and economies worldwide. "We cannot simply wait for people to develop dementia and then respond," said Henry Brodaty, co-director of the Centre for Healthy Brain Ageing. "We need to act across the spectrum—from reducing modifiable risk factors... to improving diagnosis, treatment and care."
The study analyzed data from over 38,000 people across 18 countries. Dementia incidence was found to be 10.6 cases per 1,000 people for women versus 8.6 for men. However, a starker difference emerged based on income level: 13.6 cases per 1,000 people in low- and middle-income countries compared to 8.3 in high-income countries.
Understanding these risk factors is crucial for developing targeted prevention and care strategies. "The higher incidence we observed in low- and middle-income countries is particularly concerning because these regions are experiencing rapid population aging while often having the fewest resources," stated Perminder Sachdev, a senior author of the study. The rising dementia burden, already costing trillions globally, necessitates immediate attention and investment, especially in regions with limited healthcare infrastructure.