Article Text

Download PDFPDF

1221 Changes in body mass index before and after long-term sick leave due to cancer among workers: j-ecoh study
  1. K Kuwahara1,2,
  2. M Endo3,
  3. A Nanri4,
  4. I Kashino2,
  5. C Nishiura5,
  6. A Hori6,
  7. C Kinugawa5,
  8. T Nakagawa7,
  9. T Honda7,
  10. S Yamamoto7,
  11. T Imai8,
  12. A Nishihara8,
  13. A Uehara9,
  14. M Yamamoto10,
  15. T Miyamoto11,
  16. N Sasaki12,
  17. T Ogasawara12,
  18. K Tomita13,
  19. S Nagahama14,
  20. T Kochi15,
  21. M Eguchi15,
  22. H Okazaki16,
  23. T Murakami17,
  24. M Shimizu17,
  25. I Kabe15,
  26. T Mizoue2,
  27. S Dohi16
  1. 1Teikyo University Graduate School of Public Health, Tokyo, Japan
  2. 2National Centre for Global Health and Medicine, Tokyo, Japan
  3. 3Tokyo Women’s Medical University, Tokyo, Japan
  4. 4Fukuoka Women’s University, Fukuoka, Japan
  5. 5Tokyo Gas Co., Ltd., Tokyo, Japan
  6. 6University of Tsukuba, Ibaraki, Japan
  7. 7Hitachi, Ltd., Ibaraki, Japan
  8. 8Azbil Corporation, Tokyo, Japan
  9. 9Seijinkai Shizunai Hospital, Hokkaido, Japan
  10. 10Yamaha Corporation, Shizuoka, Japan
  11. 11Nippon Steel and Sumitomo Metal Corporation Kimitsu Works, Chiba, Japan
  12. 12Mitsubishi Fuso Truck and Bus Corporation, Kanagawa, Japan
  13. 13Mitsubishi Plastics, Inc., Tokyo, Japan
  14. 14All Japan Labour Welfare Foundation, Tokyo, Japan
  15. 15Furukawa Electric Co., Ltd., Tokyo, Japan
  16. 16Mitsui Chemicals, Inc., Tokyo, Japan
  17. 17Mizue Medical Clinic, Keihin Occupational Health Centre, Kanagawa, Japan


Introduction To establish effective supporting system for workers returning from sick leave due to cancer is an emerging global issue. Better understanding of their physical conditions would provide important information to address this issue. However, even simple information, for example, weight reduction by cancer type, is scarce in occupational settings. Here, we report body mass index (BMI) trajectories before and after long-term sick leave due to cancer among workers in Japan.

Methods This is a cohort study among workers in Japan who took sick leave (consecutive 30 days or more) due to cancer between April 2012 and March 2013 and returned to work until March 2014 using data from Japan Epidemiology Collaboration on Occupational Health Study. Follow-up was conducted using annual health examination data until March 2016. Longitudinal data on BMI was extracted from the annual health examination database. BMI trend change before and after sick leave and effect modification by cancer type on the change was estimated using multivariable mixed models.

Results Over 90 000 workers belonged to the participating companies in 2012. One-hundred one workers newly took sick leave due to cancer in 2012. Data on BMI at least two time-points before and after sick leave each were available in 49 workers. Overall, weight reduction occurred after returning from sick leave from cancer (p<0.001). The tendency of weight reduction after returning from sick leave was significantly different by cancer type (p<0.001). Greater weight reduction was observed in esophageal and stomach cancer (n=10).

Discussion We found heterogeneity in weight reduction by cancer type after returning from sick leave due to cancer. The data suggest that occupational health professionals should pay more attention in weight reduction for workers who returned from long-term sick leave due to esophageal and stomach cancer.

  • cancer survivors
  • return to work
  • body weight change

Statistics from

Request Permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.