A Report on Non-Ionizing Radiation

light at night: Microwave News Article Archive (2004 - )

February 10, 2021

“Associations Between Artificial Light at Night and Risk for Thyroid Cancer: A Large U.S. Cohort Study,” Cancer, February 8, 2021. “We found that higher [light at night] levels were associated with higher thyroid cancer incidence in middle-aged to older adults in the U.S.”

July 30, 2020

“Association Between Outdoor Light-at-Night Exposure and Colorectal Cancer in Spain,” Epidemiology, September 2020.

“Outdoor blue light spectrum exposure that is increasingly prevalent in recent years may be associated with colorectal cancer risk.” An earlier paper linked blue light to breast and prostate cancer.

July 29, 2014

 “Circadian and Melatonin Disruption by Exposure to Light at Night Drives Intrinsic Resistance to Tamoxifen Therapy in Breast Cancer,” Cancer Research, posted online July 25, 2014.

Light exposure at night “may represent a unique and previously unappreciated risk factor that could account for some forms of intrinsic and possibly acquired tamoxifen resistance and may even lead to a shortened survival time and even a decreased survival rate.” From a team at Tulane University, including David Blask.

August 6, 2013

“Nocturnal Light Exposure Impairs Affective Responses in a Wavelength-Dependent Manner,” Journal of Neuroscience, August 7, 2013.

“Computers, televisions, e-readers, and CFL bulbs emit blue light, and nighttime use is widespread. Our results highlight the importance of wavelength in mood-related responses to light. This should direct efforts to minimize the deleterious effects of aberrant light exposure through manipulation of wavelength.” From Ohio State University.

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