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A 2007 systematic review by the Swedish agency SBU found insufficient evidence that light therapy was able to alleviate symptoms of depression or seasonal affective disorder. [24] The report recommended that: "Approximately 100 participants are required to establish whether the therapy is moderately more effective than placebo ". [ 24 ]
Light therapy involves sitting in front of a light therapy box that emits very bright light for a minimum of 20 minutes per day. Most people see improvements from this method within one or two ...
[41] [42] Although light therapy is the leading treatment for seasonal affective disorder, prolonged direct sunlight or artificial lights that don't block the ultraviolet range should be avoided, due to the threat of skin cancer. [43] The evidence base for light therapy as a preventive treatment for seasonal affective disorder is limited. [44]
Bright light therapy, widely understood to be an effective treatment for Seasonal Affective Disorder (SAD), can also be helpful in treating other types of depression, finds a new meta-analysis ...
Light therapy has been shown in studies to have mixed results; in some studies, 20% to 50% of those diagnosed with SAD did not gain adequate relief from the use of light therapy. [22] Individuals may also explore alternative treatments if they are unable to commit to the time required and the recurrence of the treatment that is necessary. [23]
A new study examines if sleep, light box therapy, reduces symptoms. Skip to main content. News. Need help? Call us! 800-290-4726. Login / Join. Mail. Downloads; Premium Subscriptions ...
The history of light therapy can be traced back to ancient Egypt and India, where therapy with natural sunlight was first used to treat leucoderma. [3] In the 1850s, Florence Nightingale's advocacy of exposure to clean air and sunlight for health restoration also contributed to the initial development of light therapy for treatments. [4]
For seasonal affective disorder (SAD), a randomized controlled trial (RCT) comparing high (4.5x10 14 ions/second) and low (1.7x10 11 ions/second) flow rate negative air ionization with bright light therapy found that the post-treatment improvement percentage was 57.1% for bright light, 47.9% for high-density ions and 22.7% for low-density ions. [8]
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