I've now looked at the SAD thread and although I'm not one for the sun I am going to make more effort to get more sunshine next year. I am just getting over a chest infection but once that has cleared I will definitely make sure that I get more exercise.

Kat, I had already seen your first link but I found the second link and Mary's link very interesting. I was recommended Serotone 5-HTP but all I could find at short notice was my local health food shop brand http://www.hollandandbarrett.com/pages/product_detail.asp?pid=200 which is on offer at the moment.

Although I have heard about St John's Wort before I really don't know much about it. Until this last week I had never heard of 5-HTP.