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Do sun lamps aid in combating seasonal affective disorder or seasonal depression?

Sun lamps are said to be a new line of defense against the effects of seasonal depression, but do they work and if so how effectively? I want to look at studies that show strong causation between use of sun lamps and improvement of mood. I also want to ensure the effect is greater than just the placebo effect. Additional studies comparing sun lamps with other forms of combating seasonal depression (exercise, medications) would also be helpful.
William Fan, Founder of Project Credo
asked 12/4/2016, updated 12/9/2016