This cohort study analyzes the extent to which rising health insurance premiums reflect growth in health spending vs growth in markups in the large-group market, small-group market, and in the health ...

This JAMA Forum discusses the use of artificial intelligence (AI) agents in health care, the need for regulation based on risk, and ways to share responsibility and adapt quickly.

This randomized clinical trial examines whether teenagers and young adults perceive that social media warnings discourage them from wanting to use social media and increase their awareness of the harms of social media.

This cross-sectional study examines the association between insurance type and mental health service utilization among US adults with chronic pain.

This Viewpoint describes potential concerns and opportunities with a single-trial default for US Food and Drug Administration (FDA) drug approval.

This cohort study examines changes in Medicare Advantage plan disenrollment following the development of new complex medical conditions and assesses heterogeneity by number of conditions, state Medigap policy, and plan characteristics.