It’s that time of year again as the nights draw in and the clocks come forward an hour. We will be preparing for longer nights and shorter days. Many of us take this seasonal change in our stride but 15% of us suffer terribly with the condition otherwise known as Seasonal Affective Disorder.
It is caused by a biochemical imbalance in the hypothalamus due to the shortening of daylight hours and the lack of sunlight in winter. The hormone melatonin is produced by the pineal gland at night and it aids sleep, natural sunlight suppresses the production of melatonin and improves immune function. Therefore, during the winter months when natural sunlight is at its lowest SAD can occur.
For many people SAD is…
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