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This hormonal effect can helps stabilize circadian rhythms. This stabilizing effect is particularly important for individuals with mental disorders, who often experience circadian desynchronization and sleep problems. As a result, light therapy has emerged as an increasingly popular treatment option for various mood and psychiatric disorders. [66]
Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, neonatal jaundice, and skin wound infections.
Seasonal affective disorder (SAD) is a mood disorder subset in which people who typically have normal mental health throughout most of the year exhibit depressive symptoms at the same time each year. [ 1 ] [ 2 ] It is commonly, but not always, associated with the reductions or increases in total daily sunlight hours that occur during the winter ...
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 ...
Halogen lamps with fused quartz envelopes are used as inexpensive UV light sources in the near UV range, from 400 to 300 nm, in some scientific instruments. Due to its black-body spectrum a filament light bulb is a very inefficient ultraviolet source, emitting only a fraction of a percent of its energy as UV, as explained by the black body ...
A study completed in 2009 revealed that as little as twenty minutes of light exposure can improve the mood of those with SAD. [7] Additionally, it has been found that bright light (at a minimum of 2500 lux "at eye level") [ 8 ] has a higher rate of effectiveness than dimmer light levels in protecting against the "mood lowering" symptom that is ...
3.1% of the population [citation needed] suffer from solar urticaria, a skin disorder affected by ultraviolet light. Some patients are directly affected by compact fluorescent light. Phytophotodermatitis may be aggravated by the additional levels of ultraviolet light emitted by compact fluorescent light.
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