Environmental Theory of Depression

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The Environmental Theory of Depression states it is concerned with things that are outside of human beings; meaning they are not directly related to inherited trait from parents, brain function, medical illnesses, or something else that can take place within us. So environmental events are those things that occur in the course of our lives. These events may include actual stuations like prolonged stress at home or at your job, suffering from a loss of a loved one, or other traumatic sucessions. Some researchers refer to these issues as sociological or psychosocial things since they do bring together events that happen in society with the inner workings of an ordinary person's mind.

Its been a long time since experiences we have in our everyday lives are understood, for example how it can affect our state of mind. The relationships we make with others, like how we are brought up, losses we go through, and crises that are sometimes present all may affect us tremendously. For example, affect our thoughts, emotions, and behaviors. Then, how we react to all of these environmental sucessions may influence the development of clinical depression.

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Biological Theory of Depression
The Biological Theory of Depression states that a shortage of serotonin and of noradrenalin located in the synaptic clefts are the basis of depression. Also, it states that unlike being an outcome of a simple decrease in some crucial cerebral transmitter concentrations depression may be the outcome of a disturbed balance between various regulatory systems and consequent transmitter overactivity in some of the brain regions.

A theory of depression that is molecular and cellular says that therapeutic action of antidepressant treatments and stress-induced vulnerability happen via intracellular mechanisms that minorize or maximize, respectively, the neurotrophic factors fundamental for the survival and function of some neurons. Nevertheless, depression is constantly followed by some biological alterations that may thoroughly explain the comorbidity of depression itself and different diseases. Both, the noradrenergic hyperactivity and the corticosteroid overdrive have to do with depression and may impair the ordinary functions of the immune system.

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