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What intensity is needed and for how long?

April 26, 2017intensity needed

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What intensity is needed and for how long?

1 Answer

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Most people who suffer from SAD or winter blues use a 10,000 Lux therapy early in the morning for about one-half hour. 10,000 Lux is 20 times the intensity of average indoor ambient light. Timing of light therapy varies for each individual.