Impact of Night Shift Work on Dietary Habits Among Intensive Care and Emergency Healthcare Workers (NUTRINIGHT)

January 30, 2026 updated by: Centre Hospitalier Universitaire de Nice

Impact of Night Shift Work on Dietary Habits Among Intensive Care and Emergency Healthcare Workers: An Observational Questionnaire-Based Study

Night shift work is an essential component of healthcare systems, particularly in intensive care units and emergency departments, where continuous patient monitoring and rapid clinical decision-making are required. However, it is associated with diruption of the circadian rhythm , sleep disturbances, and physiological stress, which may influence lifestyle behaviors, including dietary habits. Previous studies have reported that night work can be associated with changes in meal timing, increased caloric intake, preference for energy-dense foods, and reduced overall diet quality.Despite the growing literature on night work and nutrition, data specifically describing dietary habits among healthcare professionals working night shifts in high-intensity clinical settings remain limited. Intensive care units and emergency departments combine high workload, psychological stress, time constraints, and restricted access to appropriate meals during night hours, all of which may affect eating behaviors. Moreover, whether these dietary patterns are specific to healthcare professionals or primarily related to night work itself remains unclear. This observational, cross-sectional study aims to describe dietary habits among healthcare professionals working night shifts in intensive care units and emergency departments, and to compare these habits with those of night workers from non-healthcare sectors. Data will be collected prospectively through a voluntary, anonymous, self-administered online questionnaire during a defined inclusion period. The questionnaire will explore meal timing, eating patterns, food choices, and constraints perceived as influencing dietary behaviors during night work. By providing a descriptive overview of dietary habits across different categories of night workers, the study seeks to improve understanding of how night work and occupational context influence eating behaviors. The findings may contribute to the development of future preventive strategies and workplace health initiatives aimed at improving the health and well-being of night shift workers

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

245

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • France
    • Alpes-Maritimes
      • Nice, Alpes-Maritimes, France, 06000
        • CHU de Nice
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

The study population consists of adult night shift workers from different professional sectors. This includes healthcare professionals working in intensive care units and emergency departments, as well as night workers employed innon-healthcare sectors. Participation is voluntary, and data are collected through an anonymous, self-administered online questionnaire."

Description

Inclusion Criteria:

  • Adults aged 18 years and older.
  • Currently working night shifts.
  • Employment in healthcare (intensive care units or emergency departments) or in non-healthcare professional sectors
  • Voluntary participation and completion of the online questionnaire

Exclusion Criteria:

  • None

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Healthcare Night Shift Workers
Other: Healthcare Night Shift Workers
Data are collected through an anonymous, self-administered online questionnaire.
Non-Healthcare Night Shift Workers
Other: Healthcare Night Shift Workers
Data are collected through an anonymous, self-administered online questionnaire.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Dietary Habits of Night Shift Workers
Time Frame: At the inclusion
Online questionnaire without score
At the inclusion

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Meal Timing During Night Shifts
Time Frame: At the inclusion
Anonymous self-administered online questionnaire without score
At the inclusion
Eating Patterns During Night Shifts
Time Frame: At the inclusion
Anonymous self-administered online questionnaire without score
At the inclusion
Comparison of Dietary Habits Between Healthcare and Non-Healthcare Night Shift Workers
Time Frame: At the inclusion
Questionnaire data
At the inclusion

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Centre Hospitalier Universitaire de Nice

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

March 1, 2026

Primary Completion (Estimated)

June 1, 2026

Study Completion (Estimated)

June 1, 2026

Study Registration Dates

First Submitted

January 30, 2026

First Submitted That Met QC Criteria

January 30, 2026

First Posted (Actual)

February 6, 2026

Study Record Updates

Last Update Posted (Actual)

February 6, 2026

Last Update Submitted That Met QC Criteria

January 30, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • 26Onco-Hémato01

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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