Global dementia study reveals 11.4 million new cases in 2023—projected to more than double by 2050

International research has produced some of the most comprehensive and comparable estimates of new dementia cases worldwide, revealing that an estimated 11.4 million people developed dementia in 2023—a figure projected to rise to 24.7 million a year by 2050. The study, published in JAMA Neurology, analyzed data from 38,418 people across 22 population-based studies spanning 18 countries and territories on six continents.

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