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Prevalence of overweight and weight gain in relation to night work in a nurses' cohort
I Niedhammer1, F Lert, M J Marne
1INSERM Unit 88, Hôpital National de Saint-Maurice, France.
Abstract
Objective:
To investigate the relation between exposure to night work and prevalence of overweight and weight gain.
Design:
Longitudinal observational study.
Subjects:
469 nurses (age: 21-58 y).
Measurements:
Body Mass Index, exposure to night work, age, parity, smoking and sports activities in 1980, 1985 and 1990.
Results:
Prevalence of overweight was associated with exposure to night work in 1980 and weight gains (especially those exceeding 7 kg) were more frequent among nurses on night work than on daytime work between 1985 and 1990.
Conclusion:
Exposure to night work can lead to weight gain and overweight.