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The EAT Study

(Expandability of Aging Adipose Tissue)


The purpose of the EAT study is to research whether age affects how fat tissue responds to 1 week of overfeeding


  • aged 25-40 yr
  • aged 55-75 yr
  • overweight or mildly obese
  • sedentary to moderately active
  • non-smokers

Study Requirements:

  • To participate, volunteers must meet the above entry criteria and complete a screening questionnaire. If eligible, individuals will come in for 1 screening visit (blood work, physical exam, and body fat testing).
  • Those who qualify and agree to participate will be asked to complete the following study requirements over the course of 2 wks:
    • Fasting blood draws
    • Tissue biopsies (2 separate occasions, 1 wk apart)
    • Consumption of 40% excess calories for 7 consecutive days

For more details about this research study and the testing involved, Click here to download a copy of the Consent Form.


  • All visits are located on the Anschutz Medical Campus in Aurora, CO
  • For a map and driving directions to the University of Colorado Hospital and the University of Colorado Denver Anschutz Medical Campus click on this link.

Benefits for Research Study Volunteers:

  • physical exam and measurement of body fat
  • monetary compensation
  • 1 week of food provided by research metabolic kitchen

If you believe you qualify and are interested in participating, please contact Tracy Swibas at 720-848-6418 or

The principal investigator for this study is Rachael E. Van Pelt, PhD. This research study is approved by the Colorado Multiple Institutional Review Board (COMIRB protocol #14-2411)