Evidence linking circadian disruption – the mismatch between one's biological clock and the social clock/clock time – to colorectal cancer is limited and inconsistent. This study by Barber and colleagues examined proxies for circadian disruption in the prospective Black Women's Health Study. Having worked night shifts for ≥10 years was associated with increased colorectal cancer risk, while chronotype and residential position within a time zone were not. These findings suggest circadian disruption from long-term night shift work may contribute to colorectal cancer development among Black women, who are disproportionately affected by colorectal cancer and are more likely to work non-daytime shifts compared to other racial/ethnic groups.

The epidemiology of cirrhosis and hepatocellular carcinoma (HCC) has been shifting in the US. However, little is known about recent trends in HCC surveillance. Using claims data from Medicare, Medicaid, and private insurance plans in North Carolina, Hsu and colleagues estimated the cumulative incidences...

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