This pamphlet on health trends features the results of the 1999 Youth Risk Behavior Survey (YRBS) on Youth Suicide, which collected demographic and behavioral data from students in 109 Oregon public high schools. The survey asked four questions regarding sadness and suicidal behavior, including whether suicide had been attempted. This report focuses on the students who said they actually attempted suicide. (Some students use a liberal definition of suicide attempt, mistaking vivid ideation for an attempt.) Those among the highest risk group are females; younger students; students within a lower socioeconomic ranking; students that identified themselves as very under- or overweight; and students with chronic health conditions and activity limitations. Suicidal behavior is strongly linked to both environmental and behavioral risk factors. The following risk factors are explained: demographics; student health and self-image; home environment; school environment; and personal behaviors. Warning signs of suicide and suicide prevention strategies are included. Parents and educators often do not recognize a child's suicidal symptoms, or if they do, may feel ill equipped to intervene. Yet without intervention, at-risk youth may attempt suicide. Adults, and youth themselves, should be aware of the indicators of potential suicide risk, and should tell those in a position to help if they see someone exhibiting those signs. (Contains 10 figures, 5 tables, and 7 references.) (JDM)