The number of dementia cases in the United States is projected to increase significantly, with annual diagnoses expected to reach 1 million by 2060. According to a study published in Nature, Americans over the age of 55 face a 42% risk of developing this cognitive disorder.
Women are at a particularly high risk due to their longer life expectancy. “Their risk of getting dementia by the time their 95th birthday would arrive is higher because more of them will make it closer to their 95th birthday,” explained Dr. Josef Coresh, director of the Optimal Aging Institute at New York University’s Grossman School of Medicine and one of the study’s authors, in an interview with The New York Times.
The study examined 30 years of health data from 15,000 individuals across Maryland, Mississippi, Minnesota, and North Carolina, with 27% of participants identifying as Black. The findings revealed that Black Americans face a greater lifetime risk of dementia and are likely to develop the disease earlier. Coresh attributed this disparity to a combination of factors, including structural racism, limited healthcare access, and the prevalence of vascular risk factors such as high blood pressure and diabetes.
Life expectancy improvements among Black Americans are also contributing to the rise in dementia cases within this group, with numbers expected to triple by 2060. Overall, the study predicts 12 million Americans will be living with dementia by that year.
Researchers emphasized that nearly half of dementia cases are preventable, urging a focus on managing conditions like diabetes, high blood pressure, and hearing loss. “It is never too early or too late to address dementia risk,” Coresh stated.
The study calls for stronger policies to promote healthy aging and health equity, stressing the importance of prevention over treatment. Alzheimer’s disease, the most common form of dementia, already affects 6.7 million Americans, according to the Centers for Disease Control.
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