Understanding Depression in Young Adults: A Biopsychosocial Perspective
For decades, the dominating conceptualization of depression has been through the prism of serotonin deficiency, or the "chemical imbalance" theory. Yet, even though serotonin, among other neurotransmitters, remains an important piece of the puzzle, recent scientific progress has started to change the landscape in the understanding of depression. Emerging evidence points to a prominent role for inflammation and brain-cell dynamics at the roots of this complex disorder, particularly within young adults facing unique biological and environmental challenges. Although this model has led to the development of many different types of antidepressants, it is only partially explanatory. Increasingly, psychologists and neuroscientists are beginning to think of depression as a complex, multivariate illness that also involves the immune system and problems in the functioning of brain cells. This conceptual shift is especially important for young adults, whose brains and psychological deve...