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The Effects of Shift Work on the Immune System: A Narrative Review
Marianne Stenbekk Thorkildsen1, Lise Tuset Gustad1,2,3, Jan Kristian Damås1,4,5,6
1Gemini Center for Sepsis Research at Institute of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Trøndelag, Norway.
Abstract:
Working a shift work schedule has been hypothesized to have negative effects on health. One such described consequence is altered immune response and increased risk of infections. Former reviews have concluded that more knowledge is needed to determine how shift work affects the immune system. Since the last review focusing on this subject was published in 2016, new insight has emerged. We performed a search of the topic in PubMed, Scopus and Embase, identifying papers published after 2016, finding a total of 13 new studies. The articles identified showed inconsistent effect on immune cells, cytokines, circadian rhythms, self-reported infections, and vaccine response as a result of working a shift schedule. Current evidence suggests working shifts influence the immune system, however the clinical relevance and the mechanism behind this potential association remains elusive. Further studies need to include longitudinal design and objective measures of shift work and immune response.
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