Biological Links Found Between Childhood Abuse and Adolescent Depression
April 22, 2011 Comments Off on Biological Links Found Between Childhood Abuse and Adolescent Depression
Biological Links Found Between Childhood Abuse and Adolescent Depression – ScienceDaily (Apr. 20, 2011)
Kate Harkness has found that a history of physical, sexual or emotional abuse in childhood substantially increases the risk of depression in adolescence by altering a person’s neuroendocrine response to stress. Adolescents with a history of maltreatment and a mild level of depression were found to release much more of the stress hormone cortisol than is normal in response to psychological stressors such as giving a speech or solving a difficult arithmetic test.
“This kind of reaction is a problem because cortisol kills cells in areas of the brain that control memory and emotion regulation,” explains Dr. Harkness, a professor in the Department of Psychology and an expert in the role of stress and trauma in adolescent depression. “Over time cortisol levels can build up and increase a person’s risk for more severe endocrine impairment and more severe depression.”….
Dr. Harkness recently presented her findings at the International Society for Affective Disorders Conference in Toronto. http://www.sciencedaily.com/releases/2011/04/110420125506.htm