Timed Eating Study

Study Type


Study Purpose

The goal of the TIMED EATING research study is to find out whether eating meals early in the day lowers your blood sugar and improves your health.

About the Study

Does it matter when you eat? The TIMED EATING research study will test the conventional wisdom that people should graze all day. Recent evidence suggests that grazing may not in fact be beneficial to health. Instead, a few studies suggest:

  • eating earlier in the day may facilitate weight loss and improve blood sugar control
  • having a longer period between dinner one day and breakfast the following day may be better for health (a form of intermittent fasting)
TIMED EATING will explore the combination of these two approaches, which is known as time-restricted feeding.  Participants in this research study will eat their food according to two schedules: (1) mostly in a short time period in the morning ("early in the day eating"), and (2) spread out over the course of the day (grazing). Each participant will try both eating schedules for 5 weeks at a time, and then tests will be performed to find out which eating schedule best improves health.

Study Design

Number of visits:

  • 2 Screening visits
  • 4 Clinic visits
  • 2 Periods of 36 days (total of 72 days) of eating most meals at Pennington Biomedical and/or under remote supervision

Study procedures:

  • OGTT (Oral Glucose Tolerance Test): measures your blood sugar control
  • Applanation Tonometry: measures the health of your blood vessels
  • Orthogonal Polarization Spectroscopy: measures your circulation
  • Blood draws

During the eating parts of the study, you will eat according to the following schedules:

  1. Early in the Day Eating: 3 meals spaced over 6 hours (1 meal every 3 hours); when you are finished eating, you will go 18 hours without food.
  2. Grazing: 3 meals spaced over 12 hours (1 meal every 6 hours). When you are finished eating, you will go 12 hours without food.
Participation in the study will be spread over about 4 months.  Each eating schedule lasts about 5 weeks long (10 total weeks of eating), and you will get a 7 week break in between.  All meals and study-related procedures will be provided at no cost to you. Most meals must be eaten at Pennington Biomedical and/or under remote supervision by Skype/webcam, requiring frequent trips to the Center (a couple hour time commitment per day).

Study Qualifications

We are especially looking for men who are at-risk for diabetes or elevated blood sugar.

Study Duration

4 months (10 weeks participating in the study + 7 weeks off)


Earn up to $1800 for participation.

Study Contact

If you are interested in volunteering for the TIMED EATING study, click here to screen online, call 225-763-3000 or email clinicaltrials@pbrc.edu.

If you think you may be eligible, please click the button below to screen online.


Please do not fill out this questionnaire for anyone other than yourself unless you are their legal guardian.
If you know someone who may be interested please direct them to the site or have them call us directly at 225-763-3000.


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