Global Dementia Cases Could Rise to 24.7 Million a Year by 2050, Study Finds

A new international study projects that annual new dementia cases could more than double worldwide, from 11.4 million in 2023 to 24.7 million by 2050. The researchers say the rise could place greater pressure on health systems, families and long-term care services. The study analysed data from 38,418 people across 22 population-based studies in 18 countries and territories. It found higher age-adjusted rates of new dementia cases among women than men, and higher rates in low- and middle-income countries than in high-income countries. Dementia affects memory, thinking and the ability to carry out everyday activities. The researchers said countries with limited resources need stronger prevention, early diagnosis and care services. The estimate assumes current age- and sex-specific rates remain unchanged, so it is a projection rather than a certainty.

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