Light at Night, Night Shift Work, and Cancer: Illustrating Cumulative Exposure to Circadian Disruption through a Thought Experiment.
Light at night (LAN) and night shift work (NSW) have been hypothesized to be carcinogenic through circadian disruption. However, cancer epidemiology examining these hypotheses in environmental or occupational settings has yielded inconclusive results. The thought experiment "The city that never sleeps" illustrates why...