Study shows light therapy to effectively treat mood disorders, including SAD

A study commissioned by the American Psychiatric Association and led by a psychiatrist at the University of North Carolina at Chapel Hill School of Medicine has found that light therapy effectively treats mood disorders, including seasonal affective disorder (SAD) and other depressive disorders.

A report of the study, which appeared April 1 in the American Journal of Psychiatry, also finds that the effects of light therapy, also known as phototherapy, are comparable to those found in many clinical studies of antidepressant drug therapy for these disorders.

The findings were based on a meta-analysis, a systematic statistical review of 20 randomized, controlled studies previously reported in the scientific literature. These represented only 12 percent of 173 published studies that the authors had originally considered for review.

Dr. John Grohol is the CEO and founder of Psych Central. He is an author, researcher and expert in mental health online, and has been writing about online behavior, mental health and psychology issues -- as well as the intersection of technology and human behavior -- since 1992. Dr. Grohol sits on the editorial board of the journal Cyberpsychology, Behavior and Social Networking and is a founding board member and treasurer of the Society for Participatory Medicine.

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    Last reviewed: By John M. Grohol, Psy.D. on 4 Apr 2005
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