Author(s)

Banghan Xiao

Corresponding Author

Banghan Xiao

ABSTRACT

From the 19th to 20th century, many different approaches to mental disorder topic have been published to promote a more informative and comprehensive understanding of Major Depressive Disorder (MDD). However, previous studies on MDD had gone in-depth on a specific area, but failed to combine the understanding of MDD in other areas. The areas include evolutionary, genetic, hormones, brain structures, brain function, and early childhood trauma. Specific inferences are drawn as to how and in what ways these areas approach on mental disorder help to solve the mystery of major depressive disorder. This article is focusing on a variety of perspectives of Major Depressive Disorder (MDD) that mentioned above and helps to educate readers who are unfamiliar with this type of mental disorder. With the joint efforts of scholars in various fields, the mental health community will have huge success in defending mental disorder.

KEYWORDS

Mental disorder, Norepinephrine, Dopamine, Major depressive disorder, Bipolar disorder, Schizophrenia, Darwinian medicine, Grey matter