Depression Depression is referred to a downturn in mood. This "mood" is usually transitory and is usually caused by something trivial. Depression is another way of term for being sad, feeling blue, discouraged, hopeless or "down in the dumps" Depression is often the result of many factors. These factors join together to cause feelings of depression or may have the same results when experienced individually. Events in our lives, often some form of loss, are the most likely causes of depression. The loss could be readily apparent like the death of a family member of a friend, or it may be less obvious. Moving away from home for the first time can cause a less obvious feeling of loss. Domestic problems, financial difficulties, feelings of helplessness in controlling your environment and even a monotonous environment are common causes of a depressed mood. A sad song can bring on a depressed mood. Rainy weather and lack of sunlight are examples of common seasonal causes. The depressed mood can also stem from an internal source. Lack of self-esteem or a negative view of your life can lead to depression. Hereditary and hormonal factors also contribute to depressed moods. Certain illnesses can encourage depressive behavior. A depressed mood may come on you quickly with no apparent reason, but is likely to leave you just as quickly. Depression lasting for more than two weeks or so sever that it interferes with daily living may indicate a more serious problem and should be discussed with your doctor.