The wide array of therapeutic benefits are listed here. Of particular interest are the internal benefits on mood and aleviation of SAD (Seasonal Affective Disorder) and depression as it lists common symotoms here; * Low mood most of the day * Fatigue *Eating more * Sleeping more * Weight gain * Irritable * Hard to get along with others * Heavy feeling in your arms or legs * Suicidal thoughts (in extreme cases) Warm sunshine feels good on your skin. Could a machine that beams rays of light similar to those that come from the sun actually treat health problems? Yes. It’s called phototherapy, or light therapy. It uses ultraviolet rays to treat further concerns such as: * Skin diseases like psoriasis, eczema, dermatitis, or vitiligo * Skin cancers like cutaneous lymphoma * Moderate to severe acne vulgaris * Skin wounds from injury or diabetes Jaundice in babies * Mental health conditions like depression, sleep problems, or seasonal affective disorder (SAD) (Taken from WebMD)