Light Pollution

Light pollution from improper outdoor lighting wastes billions of dollars and vast quantities of natural resources annually. Starry Night Lights is committed to fighting light pollution and restoring our heritage of star-filled skies. We offer the widest selection of night sky friendly outdoor lighting for your home or business.

Chronic exposure to dim light at night suppresses immune responses in Siberian hamsters

Posted on January 30, 2011 by Noel

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“Species have been adapted to specific niches optimizing survival and reproduction; however, urbanization by humans has dramatically altered natural habitats. Artificial light at night (LAN), termed ‘light pollution’, is an often overlooked, yet increasing disruptor of habitats, which perturbs physiological processes that rely on precise light information. For example, LAN alters the timing of reproduction and activity in some species, which decreases the odds of successful breeding and increases the threat of predation for these individuals, leading to reduced fitness. LAN also suppresses immune function, an important proxy for survival.


Taken together, these data suggest that dim light, consistent with typical levels of light pollution from urban development, alters immune function and circadian activity patterns, which could potentially compromise survival. Our study emphasizes the ecological relevance of light pollution on immune function, an important proxy for survival. Under natural conditions, resource limitations and thermoregulatory demands can interact to compromise immune function. Further alterations in immune function by exposure to LAN could potentially reduce the odds of survival. Thus, night-time light exposure should be considered an important contributing factor in species decline. Future studies should address the mechanisms underlying these phenomena and the ultimate consequences of artificial light on ecosystem stability.”

Another interesting study revealing the negative health effects of light pollution.

Let there be night!

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