Some individuals use bright light to treat seasonal affective disorder,a type of depression that occurs during the winter months.It is believed that bright light therapy is effective due to its influence on

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Bright light therapy is believed to be effective in treating seasonal affective disorder because it can suppress the production of melatonin, which is a hormone that regulates sleep and is produced more in darkness. Increased melatonin production is associated with an increase in depressive symptoms, so by inhibiting it, bright light therapy can alleviate SAD.

Some Individuals Use Bright Light to Treat Seasonal Affective Disorder,a