http://articles.mercola.com/sites/articles/archive/2001/02/07/depression-light.aspxBright light treatments may help lift people from the depths of severe winter depression, but new research suggests that timing these treatments to the body's internal clock may improve light's antidepressant affect. The results of the study suggest thatenCommunityServer 2008.5 SP1 (Build: 31106.3070)