Depression is more than just sadness. People with depression may experience a lack of interest and pleasure in daily activities, significant weight loss or gain, insomnia or excessive sleeping, lack of energy, inability to concentrate, feelings of worthlessness or excessive guilt and recurrent thoughts of death or suicide.

Depression is the most common mental disorder. Fortunately, depression is treatable. A combination of therapy and antidepressant medication can help ensure recovery. (Adapted from the Encyclopedia of Psychology)

According to the National Institute of Mental Health, an estimated 17 million adult Americans suffer from depression during any 1-year period. Depression is a real illness and carries with it a high cost in terms of relationship problems, family suffering, and lost work productivity. Yet, depression is a highly treatable illness.

Everyone feels sad or "blue" on occasion. It is also perfectly normal to grieve over upsetting life experiences, such as a major illness, a death in the family, a loss of a job, or a divorce. But, for most people, these feelings of grief and sadness tend to lessen with the passing of time.

However, if a person's feelings of sadness last for two weeks or longer, and if they interfere with daily life activities, something more serious than "feeling blue" may be going on.

Depressed individuals tend to feel helpless and hopeless and to blame themselves for having these feelings. People who are depressed may become overwhelmed and exhausted and may stop participating in their routine activities. They may withdraw from family and friends. Some may even have thoughts of death or suicide.

What Causes Depression?  There is no single answer to this question. Some depression is caused by changes in the body's chemistry that influence mood and thought processes. Biological factors can also cause depression. In other cases, depression is a sign that certain mental and emotional aspects of a person's life are out of balance. For example, significant life transitions and life stresses, such as the death of a loved one, can bring about a depressive episode.

Can Depression Be Successfully Treated?  Yes, it can. A person's depression is highly treatable when he or she receives competent care. It is critical for people who suspect that they or a family member may be suffering from depression seek care from a licensed mental health professional who has training and experience in helping people recover from depression. Simply put, people with depression who do not seek help suffer needlessly. Unexpressed feelings and concerns accompanied by a sense of isolation can worsen a depression; therefore, the importance of getting appropriate help cannot be overemphasized.

Reprinted with permission from the American Psychological Association www.apa.org