W orking long hours comes with a slew of health issues, from too much stress to disturbed sleep, heart conditions, and mental-health disorders like anxiety and depression. It may even cause changes in the brain, according to a new report published in Occupational and Environmental Medicine . Researchers from Korea found that people who regularly work long hours had significant brain differences compared to people who worked less. Wanhyung Lee, from the department of preventive medicine at Chung-