SEARCHCOHORTobstetrics and gynecology, epidemiology

cohort·obstetrics and gynecology, epidemiology, public health, nutrition·PMC10569563

Association between shift work in early pregnancy, snacking, and inappropriate weight gain during pregnancy: The Japan Environment and Children’s Study

PLOS ONE · 8 authors, 3 centres

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TL;DR

However, shift workers had a significantly higher odds of consuming snacks more than once a week after becoming aware of their pregnancy compared to day-shift workers.

Full summary

498 CHARS

However, a key finding was that the adjusted odds ratio for consuming snacks more than once a week after noticing pregnancy was 1.34 (95% CI 1.27–1.41; p < 0.001) for shift workers compared to day-shift workers. The study adjusted for confounders but noted limitations such as potential unmeasured covariates and a possible 'healthy worker effect'. The results suggest that shift work in early pregnancy is associated with increased snack food consumption, but the impact on weight gain is unclear.

STUDY TYPE

cohort

SPECIALTY

obstetrics and gynecology

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ORIGINAL PAPER

PMC10569563

Association between shift work in early pregnancy, snacking, and inappropriate weight gain during pregnancy: The Japan Environment and Children’s Study

PLOS ONE

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ABSTRACT

Objectives This study aimed to investigate the relationship between night shifts and snacking behaviors during pregnancy using Japanese maternal-infant longitudinal data from a large-scale study. Methods This study used the Japan Environment and Children’s Study dataset jecs-ta-20190930, released in October 2019. After simple analysis using analysis of variance and multiple comparisons, crude odds ratios (cOR) and adjusted odds ratios (aORs) were calculated. To evaluate eating habits, we examined habitual fast food and snacks (e.g., potato chips, corn puffs and tortilla chips) consumption, midnight snacks, and regular missing breakfast. Results There was no significant association between inappropriate weight gain during pregnancy and night shift work in early pregnancy. The aOR for consuming snacks more than once a week after noticing pregnancy for shift workers was 1.34 (95% confidence interval 1.27–1.41; p < 0.001) compared with worker without night shiftwork. The aOR for shift workers consuming fast food more than three times a week during pregnancy was 1.40 (95% confidence interval 0.79–2.33; p > 0.05). Conclusions Pregnant night shift workers did not show excessive weight gain but had an increased frequency of consumption of snack foods compared with pregnant dayshift workers.

CITATION EXPORT

Satomi Funaki-Ishizu, Toshio Masumoto, Hiroki Amano et al.. Association between shift work in early pregnancy, snacking, and inappropriate weight gain during pregnancy: The Japan Environment and Children’s Study. PLOS ONE. (2023). https://doi.org/10.1371/journal.pone.0291579

AUTHORS

8 · 3 CENTRES

Satomi Funaki-Ishizu, Toshio Masumoto, Hiroki Amano, Shinji Otani, Youichi Kurozawa, Yosuke Yamada, Yosuke Yamada, Yosuke Yamada

1 Division of Health Administration and Promotion, Department of Social Medicine, Faculty of Medicine, Tottori University, Yonago City, Tottori Prefecture, Japan
2 International Platform for Dryland Research and Education, Tottori University, Tottori City, Tottori Prefecture, Japan
National Institute of Biomedical Innovation Health and Nutrition, JAPAN

EDITOR / REVIEWER

Yosuke Yamada