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A reasonable jury would say there is a preponderance of evidence, but its not beyond a reasonable doubt at this point.įive years ago, the cancer research arm of the World Health Organization declared night shift work as a probable carcinogen. Stevens was on the panel of scientists that made that determination.Oscar nominations 2022: It's Belfast vs Benedict Cumberbatch! Brit Kenneth Branagh's movie earns eight nods while The Power Of The Dog bags 12īRIT Awards 2022: Becky Hill puts on a leggy display in a sequin emerald mini dress after scooping gong for Best Dance Act Its guilty in a civil trial, but no verdict in a criminal trial. Stevens is careful to say that the changes in human physiology from artificial light, circadian disruption and melatonin suppression have not been proven to cause breast cancer. Melatonin has been shown to inhibit breast cancer in laboratory rats. Were lowering it, were even suppressing it completely, depending on the amount of light. The clearest evidence is about the hormone melatonin. Were learning more and more about the specifics of what that means. We know that artificial light disrupts circadian rhythms. Theres no question that this light at night changes our physiology in the short term, Stevens says. His research in that topic goes back 25 years. In scientific circles Stevens is widely credited with being the first to articulate the hypothesis that the increasing use of artificial light at night may be related to the high breast cancer risk in the industrialized world. Stevens was heavily involved in the writing of the report, titled Light Pollution: Adverse Health Effects of Nighttime Lighting. He is lead or co-author of nine of the research papers cited. The adoption of the council reports recommendations by the AMA has the potential to influence federal grant money to study the health impact of artificial light at night. ∻ased on an accumulation of evidence, this august body is now making the statement: We take this seriously, and the public should take it seriously too. It is a recognition by a major health body, the American Medical Association, that this is an emerging environmental issue that has a potentially large impact on the health of society, says cancer epidemiologist Richard Stevens, professor in the UConn School of Medicine Department of Community Medicine and Health Care. The AMAs House of Delegates has voted to accept the recommendations of a report from the AMA Council on Science and Public Health, which address changes in lighting technologies and usage, recognition of the impact on sleep and sleep disorders, and further study of the possible link between light at night and cancer risk, obesity, and exacerbation of chronic diseases such as diabetes.