Depression is very common. Many people experience depression throughout their lives and it doesn't necessarily mean you have depression if you have had a recent loss of a loved one or are having marital problems. It can actually take a while for depression to develop after a major event in ones life such as the death of a loved one. Depression is more then just a temporary low mood. It is a very serious illness that has a profound effect on both mental and physical health.
Most types of depression include major medical conditions. Some of these include heart disease, diabetes, digestive disorders, sleep disorders, and chemical imbalances in the brain and the gastrointestinal tract. Because depression can develop in people from different social and psychological backgrounds, it can be difficult to determine when a person may be suffering from depression. People who suffer from depression often feel alone and do not feel comfortable talking about their problem with others. Depression can also be mistaken for bipolar disorder, an anxiety disorder, substance abuse, or schizophrenia.
Major depression is the most serious type and can lead to suicide attempts if left untreated. However, mild depression is very common and usually does not affect mood changes. Mild depression can include having less of an interest in things that used to interest you. You may notice that you don't feel as motivated to do your work or school work as it once did. These mood changes do not necessarily mean that you suffer from depression but it is important to make note of them.