By David Ecker, MD
Faculty Peer Reviewed
Over the last several decades, Westernized countries have become 24-hour societies. Approximately 21 million workers in the US are on non-standard work shifts, including almost 4 million on regular overnight shifts. In 1972, Taylor and Pocock published a mortality study, in which they reported a significantly increased incidence of neoplasms in shift workers compared to the general population. After several published cancer incidence studies, Kerenyi explicitly proposed that changes in light exposure could be…







