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New Study Maps U.S. ‘Epilepsy Belt’ in Older Adults, Linking Risk to Heat and Sleep

Geospatial analysis of 4.8 million Medicare records identifies social and environmental correlates that could guide targeted prevention.

Overview

  • Epilepsy incidence among adults 65 and older is highest in parts of Louisiana, Mississippi, East Texas and central Oklahoma, according to JAMA Neurology.
  • Researchers used machine-learning models on 2016–2019 Medicare and AHRQ data to produce the first nationwide map of county-level incidence in older adults.
  • The strongest associations with higher incidence included insufficient sleep, more days with a heat index above 95 degrees, lower physical activity, limited household vehicle access and higher uninsurance rates before Medicare eligibility.
  • Authors emphasize the findings are observational but point to opportunities for heat resilience, sleep health initiatives, and improved access to primary care and transportation in high-burden communities.
  • Epilepsy affects an estimated 3.3 million people in the U.S., with 2019 spending on epilepsy and seizures reaching about $24.5 billion, highlighting the public-health stakes.