Light boxes or sunlight simulator lamps need to emit 10,000 lux of light to be effective. If used correctly a light box can help combat the effects of Seasonal Affective Disorder.

As daylight diminishes people can feel their mood dimming. In fact millions of U.S. adults experience seasonal affective disorder. Light therapy can help fend off winter depression, starting in the fall.

(Image credit: Daniel Wischenbarth)

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