Biological Explanations Of Depression

The biological explanations for slack centre on the mood malady 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 minor gear. This is known as the diathesis stress model. The main piece of depend that supports this comes from the Maudsley Hospital twin register, where concordance rates of 46% were effectuate in MZ twins and 20% in DZ twins. This kick up that slump must be passed on through genes if there is a high concordance rate between twins which sacrifice the same genetic makeup both having slump. However, biological factors much(prenominal) as the amine hypothesis rural beas that if amines such as serotonin and noradrenalin become unbalanced, they can lead to depression. PET scans support this conception as they show that low levels of serotonin are foreswear in people that are gloomy. Other supporting suppose is that drugs s uch as MAOIs, which work by gain the available amount of noradrenalin in the brain, were found to be smashed in alleviating the symptoms of depression. A problem with this is that it doesnt suppose whether it is become or effect. Significant support for the biological explanation of depression comes from neuroendocrine factors.

Cortisol levels are higher in downhearted people. A stress reaction leads to the production of Cortisol, a bootlick 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 Cortisol levels cant be find out which sugg! ests that 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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