Depression is often a feeling that we tend to get when a thing bad happens and we find it difficult to deal with it again. Even though depression has become known to currently have serious effects when it persists on a long period of time, the actual factors that cause depression are never well defined. You can find theories that indicate a multiple selection of reasons, both internal in addition to external factors that may cause depression. There are different theories about the reason for depression arising by genetics. With this theory everyone and their behavior incorporates a predisposition...
