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Using Early Time Restricted Feeding and Timed Light Therapy to Improve Glycemic Control in Adults With Type 2 Diabetes

NCT04155619 · Status: ACTIVE_NOT_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 344

Last updated 2026-01-22

No results posted yet for this study

Summary

The purpose of this study is to test whether eating earlier in the day and/or timed light therapy can improve blood sugar in people with type 2 diabetes. This study will also test whether these treatments improve other aspects of health, including the circadian (biological) clock, sleep, weight, body composition, cardiovascular health, quality of life, and mood.

Conditions

  • Diabetes Mellitus, Type 2
  • Time Restricted Feeding
  • Light; Therapy, Complications

Interventions

BEHAVIORAL

No change in meal timing

Participants will eat within an ≥11-hour daily period (no change in meal timing habits).

BEHAVIORAL

No change in light exposure

Participants will not change their light exposure habits.

BEHAVIORAL

Early Time-Restricted Feeding

Participants will eat within an 8-hour daily period early in the day, starting within 2 hours of waking up.

BEHAVIORAL

Timed Light Therapy

Participants will use bright light therapy for 60 minutes between 6 am - 3 pm, blue light-blocking glasses for one hour before bedtime, and blackout curtains at night.

Sponsors & Collaborators

  • University of Alabama at Birmingham

    lead OTHER

Principal Investigators

  • Courtney Peterson, Ph.D. · University of Alabama at Birmingham

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
30 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-04-26
Primary Completion
2026-04-30
Completion
2026-08-31

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04155619 on ClinicalTrials.gov