/ /

  • linkedin
  • Increase Font
  • Sharebar

    Working nights linked to increased diabetes risk in black women


    Black women who work the night shift may be at greater risk of incident type 2 diabetes, according to recent results from an ongoing prospective cohort study. The more time a woman spent working a night shift, the authors also found, the higher the risk of the disease.

    In the Black Women’s Health Study, researchers from the Center for Health Organization and Implementation Research (CHOIR), Edith Nourse Rogers Memorial VA Medical Center, followed 28,041 participants for incident diabetes from 2005 to 2013. Each participant answered questions in 2005 about whether they had ever worked a night shift. Cox proportional hazard models were used to estimate hazard ratios (HRs) and confidence intervals (CIs). The original multivariable model included family history of diabetes, education, neighborhood socioeconomic status, time period, and age. Later models also controlled for body mass index and lifestyle factors.

    Editorial: Graduate medical education at the crossroads

    Over the 8-year follow-up period, 1786 cases of incident diabetes were recorded. When compared to never having worked the night shift, the HRs (95% CI) for diabetes were 1.17 (1.04, 1.31) for 1–2 years of night-shift work, 1.23 (1.06, 1.41) for 3–9 years and 1.42 (1.19, 1.70) for ≥10 years (P <0.0001).  Monotonic positive association between type 2 diabetes and night-shift work remained even after multivariable adjustment (P = 0.02). The association was stronger in woman aged <50 years, but showed no variation with obesity status.

    The investigators concluded that periods of night-shift work were associated with an increased risk of type 2 diabetes and that lifestyle factors and body mass index only partially explained the relationship. They urged further research into the potential mechanisms behind the increased risk because many Americans perform shift work.

    To get weekly advice for today's Ob/Gyn, subscribe to the Contemporary OB/GYN Special Delivery.

    Miranda Hester
    Ms. Hester is Content Specialist with Contemporary OB/GYN and Contemporary Pediatrics.


    You must be signed in to leave a comment. Registering is fast and free!

    All comments must follow the ModernMedicine Network community rules and terms of use, and will be moderated. ModernMedicine reserves the right to use the comments we receive, in whole or in part,in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

    • No comments available


    Latest Tweets Follow