Timed Eating Study


Study Type
Study Purpose
The purpose of this study is to find out what eating meals in a short time period early in the day, versus eating meals spread out during the day ("grazing"), does to the body's ability to control blood sugar and to the health of its blood vessels.
About the Study

This study will test the conventional wisdom that people should graze all day long.  It will also test whether when you eat matters. 
Recent evidence suggests that grazing all day long may not in fact be beneficial to health. Instead, a few studies suggest that

  • 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)
This study will explore the combination of these two approaches, which is known as time-restricted feeding.  Participants in this 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), and we will see 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 three meals per day at Pennington Biomedical and/or under supervision

Study procedures:

  • OGTT (Oral Glucose Tolerance Test)
  • Applanation Tonometry
  • Orthogonal Polarization Spectroscopy
  • 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 inbetween.  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 supervision, requiring 3 trips a day to the Center (a couple hour time commitment per day).
Study Qualifications
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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