The concept of depression has been traced back to the origin of ancient history of medicine. It is one of the most pervaded psychological condition affecting individuals globally. Sample studies reveal that depression and something like attachment disorder in adults affects people at an alarming rate of 15 % of the time yearly, while men suffer approximately half this duration. Serotonin and depression have been studied in parallel by neuro-biologists worldwide. Depression The word depression is usually used to connote negative emotions of despair, hopelessness, hollowness etc. and is usually characterized by insomnia, loss of appetite, seclusion from social gatherings, decreased levels of energy and interest and deteriorated moods even in the absence of any environmental triggers. Depression may be prompted by loss or bereavement, humiliation or disappointment etc. Serotonin is a neurotransmitter that is responsible for alleviating positive feelings in individuals like B12 does in vitamin form. Many researches have been conducted by renowned psychiatrists on the relationship between serotonin and depression that have yielded meaningful insights. Evidence Of Serotonin Connection With Depression Clinical studies directed towards understanding serotonin connection with depression reveal that a low level of serotonin in the human body is believed to be the leading biological cause of depression. Researchers studying the brain activity of people suffering from depression have found tangible evidence of serotonin connection with depression. The cerebrospinal fluid of patients with symptoms of depression exhibit lower than normal levels of serotonin metabolites. For instance patients with suicidal tendencies clearly illustrate low levels ...

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