Light therapy is often as effective as antidepressants for seasonal affective disorder (SAD)

Light therapy is often as effective as antidepressants for seasonal affective disorder (SAD).

Shorter days and reduced light trigger "winter depression" in some people. It's thought to be caused by increased melatonin...or reduced levels of serotonin or other neurotransmitters. 

Light therapy...from a "light box"...helps. It can be used alone...or with antidepressants to boost their efficacy.

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