A psychiatrist is a physician who specializes in the diagnosis, treatment, and prevention of mental health and emotional problems. Because
of extensive medical training, the psychiatrist understands the body's functions and the complex relationship between emotional illness and
other medical illness. The psychiatrist is thus the mental health professional and physician best qualified to distinguish between physical
and psychological causes of both mental and physical distress. Psychiatrists are physicians who specialize in the diagnosis and treatment of
Mental healthes, including addictions, are common. Like other medical illnesses, mental health range from severe and life-threatening disorders to relatively mild and self-limiting conditions. Approximately 2.8% of the adult population suffers from severe mental health, such as schizophrenia or bipolar disorder, or from the more common, yet disabling, anxiety and depressive disorders or from alcohol and other substance abuse.