Suicide (intentionally killing oneself) was the 10th most common cause of death in the United States in 2010. Suicide is most common in adolescence and old age. People who have psychiatric disorders, such as depression, or drug or alcohol abuse or who have previously tried to kill themselves are more likely to die by suicide than those who do not have any of these conditions. Because many patients who die by suicide have been seen in a primary care setting within the year before suicide, some experts have wondered whether suicide could be reduced by screening primary care patients for suicide risk and offering suicide prevention treatments to those identified as being at risk. Screening means looking for a condition in people who do not have any outward signs or symptoms of the condition. However, in 2004, the USPSTF could recommend neither for nor against screening for suicide as part of routine primary care because there were too few studies of the benefits and harms of screening for suicide. The USPSTF wanted to update these recommendations on the basis of studies that have become available since then.