Behavioral Sleep Medicine, 7:210–222, 2009 Copyright © Taylor & Francis Group, LLC ISSN: 1540-2002 print/1540-2010 online DOI: 10.1080/15402000903190199 Insomnia Symptoms and Use of Health Care Services and Medications: The HUNT-2 Study Børge Sivertsen Department of Clinical Psychology University of Bergen, Norway Steinar Krokstad HUNT Research Centre Norwegian University of Technology and Science, Norway; and Levanger Hospital Nord-Trøndelag Health Trust, Norway Arnstein Mykletun Research Centre for Health Promotion Department Psychology University of Bergen, Norway; and Norwegian Institute of Public Health, Division of Epidemiology Department of Mental Health, Oslo, Norway Simon Øverland Research Centre for Health Promotion Department of Psychology University of Bergen, Norway This study investigated how symptoms of insomnia are related to use of health care services and medications. Data on insomnia symptoms, use of a range of health care services, and potential confounders were gathered from 47,700 individuals aged 20 to 89. The prevalence of insomnia symptoms was higher among health care users across a range of health professionals. The frequency of medication use, alcohol overuse, and hospitalization was also higher among individuals with Correspondence should be addressed to Børge Sivertsen, Department of Clinical Psychology, University of Bergen, Christiesgt 12, 5015, Bergen, Norway. E-mail: borge.sivertsen@psykp.uib.no 210