Dietary Intervention for Night Work Health

This study is testing a dietary intervention to see if it can help reduce the negative health effects of night shift work. Researchers want to understand if changing what you eat can lessen problems like an increased risk for diabetes that can come from working at night. They will look at how your body handles sugar (glucose tolerance) and changes in the tiny living things in your mouth and gut (oral and gut microbiome). You may be able to join if you are between 18 and 45 years old, have a body mass index (BMI) between 20.0 and 29.9, and are of European, Hispanic, or African-American ancestry. You should not have any serious medical conditions, a history of smoking/vaping for 5 or more years, or a history of drug/alcohol dependency or psychiatric illness. The study aims to enroll 24 participants, but its current status is unclear.

Study design
This is an interventional study, meaning participants will receive a specific dietary intervention. It plans to enroll 24 participants.
What's involved
You would complete two inpatient stays, be provided with identical meals, have frequent blood draws, and provide urine, saliva, stool, and rectal swab samples.
Compensation
Not stated in the trial record.
Follow-up
Changes in glucose tolerance and microbial communities will be measured from Baseline (Day 2) to Test Day (Day 4).

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NCT04868526

Dietary Intervention to Mitigate Adverse Consequences of Night Work

Recruiting
NAAges 18–45InterventionalBasic science
Brigham and Women's Hospital
~24 participants
Updated 2025-12-05 on ClinicalTrials.gov
What's tested:dietary intervention

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Change in glucose tolerance from Baseline to Test Day
Measured over Baseline (Day 2) and Test Day (Day 4)
+1 more outcome measured
Dietary Habits
1 sites across 1 states
Massachusetts1
  • Frank Scheer, PhD · PRINCIPAL_INVESTIGATOR · Brigham and Women's Hospital

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Eligibility criteria

Inclusion

18-45 yr old
BMI 20.0-29.9
European/Hispanic/African-American ancestry
No acute, chronic or debilitating medical conditions (e.g. metabolic, cardiovascular, respiratory, neurological, cancers, etc.)

Exclusion

Currently smoking/vaping or 5 or more years of smoking/vaping
History of drug or alcohol dependency
History of psychiatric illness or disorder
  • Change in glucose tolerance from Baseline to Test DayBaseline (Day 2) and Test Day (Day 4)

    Change in incremental glucose area under the curve (AUC) from a mixed meal test.

  • Changes in microbial community structure/composition/function of oral and gut microbiome from Baseline to Test DayBaseline (Day 2) and Test Day (Day 4)

    Shotgun metagenomics sequencing or 16S rRNA sequencing of saliva, stool, and rectal swab samples will provide in-depth interrogation of the microbial community structure, composition, and function.