Depression is a feeling that we get when something bad happens and we are unable to deal with it. Even though depression is now known to have serious effects if it persists for a long length of time, the actual causes of depression are not well defined. There are some theories that suggest a multiple number of reasons, both internal and external factors which can cause depression.
There are other theories about the cause of depression arising from genetics. With this theory the family and their behavior has a predisposition towards depression. There are numerous studies and research that has shown family members who are affected by depression have a genetic makeup that is very different from family members who are unaffected by depression.
It has been noted that changes in the brain structure or even brain functions may be one of the causes of depression. While there is no clear evidence of brain functionality or genetics as being predisposed towards depression, there is ample research data to suggest that this is the case.
Low self esteem and pessimism are thought to be the other causes of depression. With these mood traits a person suffering from low self...