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Worldwide, more than 55 million people live with dementia, a number projected to surge to 139 million by 2050, with much of this increase occurring in developing countries. This raises a critical public health question: what region of the world has the highest prevalence of dementia?
Globally, over 55 million people are living with dementia, a number with significant regional variations. Understanding **what is the prevalence of dementia by region** reveals striking disparities influenced by various socioeconomic and environmental factors, posing a complex challenge for public health systems worldwide.
According to a 2023 study published in *Alzheimer's & Dementia*, higher prevalence of the disease was estimated in the east and southeastern U.S. regions, underscoring significant geographic disparities. Examining **what states have the worst dementia** requires looking beyond simple population numbers to understand the complex factors driving these differences, from high mortality rates to systemic healthcare inequities.
