Depression is among the most treatable of psychiatric illnesses. The best way to prevent suicide is through early detection, diagnosis, and treatment of depression and other mental health conditions. 25 million Americans suffer from depression each yearIt is estimated that up to 15% of the adult population will experience depression at some point in their lifetime. Over 50 percent of all people who die by suicide suffer from major depression. If one includes alcoholics who are depressed, this figure rises to over 75 percent. Depression affects nearly 5-8 percent of Americans ages 18 and over in a given year. More Americans suffer from depression than coronary heart disease, cancer, and HIV/AIDS. Patient Health Questionnaire The first step towards improving your mental health.0 – 9 Minimum Symptoms; 10 – 14 Minor Depression; 15 – 19 Major Depression, Moderate Severity; Over 20 Major Depression, Severe