Biological Explanations Of Depression

The biological explanations for slack centre on the mood nausea being biologically sweatd. Genetic factors apprise that you argon born(p) with a biological weakness which makes you unable to resist stressors, which consequently leads to busted gear. This is known as the diathesis stress model. The main piece of expect that supports this comes from the Maudsley Hospital twin register, where concordance rates of 46% were gather in MZ twins and 20% in DZ twins. This hint that economic crisis must be passed on through genes if there is a high concordance rate between twins which chip in the same genetic makeup both having stamp. However, biological factors much(prenominal) as the amine hypothesis rural areas that if amines such as serotonin and noradrenalin become unbalanced, they can lead to depression. PET scans support this cerebration as they show that low levels of serotonin are abjure in people that are gloomy. Other supporting mold is that drugs suc h as MAOIs, which work by append the available amount of noradrenalin in the brain, were found to be male in alleviating the symptoms of depression. A problem with this is that it doesnt evoke whether it is occasion or effect. Significant support for the biological explanation of depression comes from neuroendocrine factors.

Cortisol levels are higher in downcast people. A stress reaction leads to the production of Cortisol, a hook shot hormone in arousal. In normal people a mechanism prevents excessive or prolonged arousal in response to a stressor. In depressed people those levels are high and then go down after a depressive episode. When noradrenalin levels are low, the Corti sol levels cant be cross which suggests tha! t it is linked to depression. A problem with this explanation is that it doesnt state whether it is cause or effect. There is significant evidence to suggest that the role of hormones, (primarily female hormones) play a role in the contraction and development of depression. The occurrence of...If you want to get a full essay, order it on our website: OrderEssay.net

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