The biology of depression is the attempt to identify a biochemical origin of depression, as opposed to theories that emphasize psychological or situational causes. [1] Scientific studies have …

Epigenetics of depression is the study of how epigenetics (heritable characteristics that do not involve changes in DNA sequence) contribute to depression. Major depressive disorder is …

Evolutionary approaches to depression are attempts by evolutionary psychologists and evolutionary psychiatrists to use the theory of evolution to further understand mood disorders. …

Endogenous depression is an atypical subclass of major depressive disorder (clinical depression). It could be caused by genetic and biological factors. [1] Endogenous depression occurs due to …

Major depressive disorder ... Major depressive disorder (MDD), also known as clinical depression, is a mental disorder [10] characterized by at least two weeks of pervasive low mood, low self …

Biology of bipolar disorder Bipolar disorder is a mood disorder characterized by alternating periods of manic (elevated) and depressed mood. While the exact cause and mechanism of …

Bipolar disorder is classified as a mood disorder which is a classification of mental and behavioral disorders that include characteristics such as manic episodes, depressive episodes, recurrent …

Depression is a mental state of low mood and aversion to activity. [3] It affects about 3.5% of the global population, or about 280 million people worldwide, as of 2020. [4] Depression affects a …