Overview

• A Neurology study reports the national rate rose from 5.3% in 2013 to 7.4% in 2023, with the first sustained increase appearing in 2016.
• Adults under 40 saw the sharpest rise as rates nearly doubled from 5.1% to 9.7%, while adults 70 and older declined slightly to 6.6%.
• Lower-income and less-educated adults reported the highest levels and largest gains, with rates rising to 12.6% for incomes below $35,000 and to 14.3% for those without a high school diploma.
• Rates increased across most racial and ethnic groups, with American Indian and Alaska Native adults reaching the highest prevalence at 11.2% in 2023.
• Researchers excluded respondents reporting depression and the year 2020 due to pandemic effects, and they urge further research to determine causes and guide public-health planning.