Anger is unhealthy, both physically and mentally. Doctors have cited anger as one of the contributing factors to heart disease. Studies have shown that people who scored highest on the anger scale of a standard personality test were two to three times as likely to develop heart disease as those who score lowest. Anger which is suppressed and turned inwards is a common cause of chronic depression.
2. Anger would not be so common if it did not serve some useful functions. But too often the way anger is expressed, or suppressed, is counter-productive. Instead of bringing about needed changes, it may actually make matters worse.