Researchers following adults aged 90 and older have found that the sex, racial, and ethnic differences in dementia risk documented in younger age groups do not disappear in the tenth decade of life.
The finding comes from LifeAfter90, a study run by UC Davis Health and Kaiser Permanente that has tracked participants 90 and older since 2018. The analysis of more than 800 participants, median age 92, was published in The Lancet Healthy Longevity. Women 90 and older had roughly twice the dementia risk of men. Black participants had a 75 percent greater risk than Asian participants, and Black and Hispanic participants had significantly higher dementia incidence rates than white and Asian participants.
