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Seasonal Affective Disorder Research Paper

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New research (Journal of Neuroscience, Dec 2006) demonstrating the link between serotonin levels and our ability to appreciate the salt and bitterness of food explains why carbohydrate cravings and weight gain are so closely associated with Seasonal Affective Disorder (SAD). However, this finding also goes a long way towards explaining the mechanism that links the obesity epidemic with lifestyle changes over the last twenty years. Classical SAD where clinical depression is actually diagnosed by psychiatric assessment affects 2-5% of the population but over 40% of us suffer sub-syndromal SAD or ‘winter blues’. This typically involves carbohydrate craving, lethargy, lack of energy and depressed mood. The traditional treatment of winter blues …show more content…

When this mechanism does not work correctly we experience seasonal affective disorder (SAD), winter blues and, increasingly, non-seasonal depression (aka social jetlag). The typical symptoms of these conditions are depressed mood, lack of energy, carbohydrate craving and weight gain. These are exactly the symptoms expressed by teenagers for the following reason: At puberty there is a fundamental shift in the body clock mechanism resulting in a sleep pattern that means that teenagers and students do not begin melatonin secretion until the early hours, and therefore cannot sleep. They do not naturally want to wake up until noon. All parents are familiar with this pattern. By forcing children to wake at 8am to go to school means that their sleep duration and efficiency is compromised. In the US research shows that most teenage accidents occur before noon. Vigilance and accuracy are at naturally low levels in the morning because melatonin levels are still high so their academic work suffers because of an inability to concentrate – for totally natural reasons. An increasing number of enlightened (sic) parents are encouraging their children to use light therapy as soon as they wake or on the journey to school. The effects are dramatic. 15 – 30 minutes of intense bright white light using The Litebook are enough to turn teenagers into human

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