Thoughts of suicide can be abundant and frequent for some. These thoughts easily disrupt the lives of not only the suicidal person but the world around said person. It may, however, be possible to tell someone is suicidal before it’s too late. Participants of committee on the Pathophysiology and Prevention of Adult and Adolescent Suicide of the Institute of Medicine’s held two workshops, Risk Factors for Suicide, March 14, 2001 and Suicide Prevention and Intervention, May 14, 2001, to discuss the topic of suicide. The two workshops were designed to allow invited presenters to share with the committee and other workshop participants their particular expertise in suicide, and to discuss and examine the existing knowledge base.Risk Factors for Suicide: Summary of a Workshop summarizes the first workshop whose participants were selected to represent the areas of epidemiology and measurement, socio-cultural factors, biologic factors, developmental factors and trauma, and psychologic factors. They were asked to present current and relevant knowledge in each of their expertise areas.