"These results highlight the urgent need for policies that enhance healthy aging, with a focus on health equity," the authors wrote in the study. "Understanding the lifetime risk of dementia can inform public health planning and improve patient engagement in prevention." ????? ???????  

Researchers also found that white Americans are expected to see nearly double the number of dementia cases, while cases among Black Americans could triple. ????????????  

Greater risks were seen in women, Black Americans and people who carry the APOE4 gene, a gene that primarily increases the risk of Alzheimer's, according to the study. ?????  

"Our study results forecast a dramatic rise in the burden from dementia in the United States over the coming decades, with one in two Americans expected to experience cognitive difficulties after age 55," Dr. Josef Coresh, a study senior investigator, epidemiologist and founding director of the Optimal Aging Institute at NYU Langone, said in a pre

The study also showed that the risk of developing dementia after age 55 is 42%, more than double the risk seen by older studies. After age 75, the lifetime risk increases to more than 50%, according to the study. ????????????