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Biological Rhythms and the Body Clock Part II:
The Basis of Light Therapy for Seasonal Affective Disorder

The human body clock regulates not only daily rhythms such as sleeping and waking, but also seasonal changes in physiology. Humans that live in temperate zones where the climate changes with the seasons exhibit seasonal changes in behavior and activity just as other mammals do. The normal response of mammals to the changing seasons is to alter their activities and behaviors with respect to eating, sleeping, socialization, and sexual activity. Ref


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Purchase or "No Risk" Rental Plans

In North America, a no-risk rental program is available on some models. If the unit is purchased within 2 months from the time of rental, all rental payments are applied towards the purchase price. Order Now!

The Sunnex Biotechnologies Lo-LIGHT phototherapy lamp comes with a five year warranty. Details