Now the clocks have gone back and tonight is Halloween can only mean one thing, winter is on the way, it is now autumn. Despite the unseasonal warm weather the days are getting shorter, less sunlight and Seasonal Affective Disorder or SAD for short. Many people about this time of year start to feel down, maybe even depressed, and this is caused by the lack of sunlight of a typical British autumn/winter. For some sufferers it can be quite serious but for as many as 21% of the