Last Updated on Tuesday, 16 March 2010 13:59
Season Affective Disorder, SAD, often causes feelings of depression in people when their body’s natural rhythms are disturbed by winter’s shorter days, according to an article, Feb. 15 in the Metrowest Daily News.
The article suggests that light therapy can help people suffering from SAD. Light therapy lamps simulate natural light, and sitting next to a natural light box or lamp for a certain period each day can help restore natural circadian rhythms.
A cancer center in Philadelphia is launching a clinical trial using 



