Bright visible-spectrum light therapy is effective treatment for seasonal affective disorder (SAD). Basic research suggests that blue wavelengths approximately 470 nm account for that effectiveness.

To confirm these findings, researchers from the University of Utah in Salt Lake City, tested blue light in people with SAD. (more…)

Sarah Pullman writes about her experience with The LiteBook Elite. She suffers from seasonal affective disorder (SAD) and had success with the older model.

I thought it might be useful to read her anecdotal experience in light (Oops! Couldn’t help myself) of what we know from the literature. Also, Shoi, who has the credentials, comments on the post.
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In an earlier post on the topic of seasonal affective disorder (SAD), a reader emphasized the importance of recognizing the influence of the circadian pacemaker on depression, and its importance when scheduling light treatment.

So, let’s update the record. (more…)