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 ...

Before one can delve into the connection between serotonin and depression, it is imperative to understand the causes of depression and diagnosis for bipolar disorder. Most of these psychological disorders are often a mixture of genetic, biological and environmental factors. While genetic factors are passed on from generation to generation, biological factors may lie dormant in the individual for a very long time without one knowing about it. Environmental factors play the role of a trigger to activate genetic or biological predispositions. These are often caused by traumatic life events or experiences. Biological Factors Biological factors and causes of depression are the best way to understand the connection between serotonin and depression along with its relation to eustress as well. Serotonin is a neurotransmitter that helps the brain perform various functions including temperature regulation, sleep, appetite, learning, memory, appetite, sexual activity, muscle activity, endocrine regulation and lots more. The importance of serotonin becomes increasingly clear when observing its importance in various bodily functions. However, one of the most important functions of serotonin is mood regulation. Since depression is a mood disorder, it comes as no surprise that low levels of serotonin are often commonly seen in patients suffering from depression. This connection between serotonin and depression is not a rarity as it is seen in most, if not all patients of depression. Serotonin Importance Serotonin goes well beyond controlling mere biological functions as it taps into various psychological factors as well. Mood regulation is one of the most important functions ...