Manmade Lighting ≠ Sunlight


The chart above highlights the ways in which manmade lighting from bulbs and screens is inferior to the gold standard, natural sunlight.  The vast majority of life on Earth, including the entire photosynthetic food web has developed under the sun's influence.  As the research below shows, living indoors under manmade alien suns and behind glass is not optimal for our health.

  1. Artificial Light at Night and Cancer: Global Study

    1. ​In 158 countries, PALI and PAHI [artificial light exposure at night] were positively associated with ASR [age standardized rates] of all forms of cancer, and also the four most common cancers (p < 0.05). These positive correlations remained statistically significant for PAHI with all forms of cancer, lung, breast, and colorectal cancer after adjusting for confounders.

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  2. Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans

      1. Manmade light (blue/violet) destroys melatonin


      2. Melatonin signaling is a strong driver for internal housekeeping processes that occur during the night.  

    1. Light Exposure at Night Disrupts Host/Cancer Circadian Regulatory Dynamics: Impact on … Tumor Growth Prevention

      1. “The central circadian clock within the suprachiasmatic nucleus (SCN) [located in between our eyes and brain] plays an important role in temporally [time-based] organizing and coordinating many of the processes governing cancer cell proliferation and tumor growth in synchrony with the daily light/dark cycle.”


    2. Cancer metastasis & Melatonin 

      1. "Mounting evidence indicates that melatonin, employing multiple and interrelated mechanisms, exhibits a variety of oncostatic properties in a myriad of tumors during different stages of their progression." 


    3. Link Between Artificial Light at Night (ALAN) and Obesity and Diabetes (Click here for infographic)

    4. Fluorescent Light Incites a Conserved Immune and Inflammatory Genetic Response within Vertebrate Organs

      1. “The study showed genome-wide changes of gene expression patterns in skin, brain and liver for two commonly utilized experimental models (zebrafish and mice), following exposure to 4,100 K ‘cool-white’ fluorescent light,...In spite of the extreme divergence of these animals (i.e., estimated divergence of mice and fish about 450 million years), and drastically different lifestyles (i.e., diurnal fish and nocturnal mice), the same highly conserved primary genetic response that involves activation of inflammation and immune pathways as part of an overall acute phase response was observed in the skin, brain and liver of all three animals.”


    5. Potential Biological and Ecological Effects of Flickering Artificial Light

      1. Our results clearly demonstrate how a significant proportion of animals, particularly fast moving diurnal birds and insects have the potential to perceive the flicker of electric lamps, which has been demonstrated to have detrimental effects on both human and non-human species. When we also consider that in the case of humans, flicker can produce symptoms when it cannot be perceived (but can invoke measurable physiological changes [16], [17], [18]) we suggest that, in addition, any species with a CFF of 60 Hz (as in humans) or higher, including many other mammals, and some crustaceans, reptiles and fish, have the potential to be affected by flicker.