Self-reported problems with memory and thinking have surged among young adults and disadvantaged groups over the past decade. Experts warn this growing cognitive crisis could signal deeper societal and health issues. Credit: Shutterstock Key Findings at a Glance Self-reported cognitive disability among U.S. adults increased from 5.3% to 7.4% over the past decade. Rates nearly doubled for younger adults ages 18 to 39. The steepest increases occurred among people with lower incomes and less