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The National Institute of Mental Health recently conducted a study which found that an the portion of the brain that controls emotion is overactive in people susceptible to depression. This brain function anomaly is present even when depressive symptoms are in remission so it may well be important to continue long-term depression treatment irrespective of whether depression symptoms are present. Antidepressants promote the production of the neurotransmitter tryptophan. Researchers discovered that people prone to depression had the symptoms reappear when tryptophan was depleted from their bodies. Thus, the reduction of tryptophan levels may allow a depressive trait to take effect. The genetics of depression may thus be further assessed by studying tryptophan depletion.
Source: summary of medical news story as reported by Hindustan Times
About: Depression may be triggered by overactive brain
Date: 25 January 2005
Source: Hindustan Times
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