This document discusses adolescent depression and suicide. It begins by stating that depression affects 10.7% of teens and that 17% of high school students have contemplated suicide. It then provides details on the symptoms of depression according to the DSM-5 criteria. These include feelings of sadness, hopelessness, changes in appetite or sleep, loss of interest in activities, fatigue, worthlessness, and thoughts of death or suicide. The document emphasizes that depression can be mild, moderate, or severe and if left untreated can last for weeks, months or years. It also notes that heredity, neurotransmitter imbalances and life stressors can contribute to depression in teens. Statistics are presented on the prevalence of depression and suicidal thoughts among high