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Since light from overhead lamps has an affect on the circadian rhythm and should be avoided during the late hours, is it possible to influence things like mood and energy levels with it during the day? I know one usually speaks of light machines with regard to mood-boosting properties, but could artificial everyday light have a positive effect on people living in less sun-blessed areas of the world?

Since light from overhead lamps has an affect on the circadian rhythm and should be avoided during the late hours, is it possible to influence things like mood and energy levels with it during the day? I know one usually speaks of light machines with regard to mood-boosting properties, but could artificial everyday light have a positive effect on people living in less sun-blessed areas of the world?

Dr. Amy Nett: Certainly, if you’re talking about something like seasonal affective disorder, there is some research supporting the use of lightboxes and light therapy. So, yeah, I think light absolutely can affect mood, it can affect hormone production, basically our neuroendocrine system. So, yeah, I think lights do affect us both during the day and in the evening as well.

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