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Can Intermittent Fasting Mimic the Metabolic and Cardiovascular and Anti-aging Effects of Calorie Restriction? (IF)

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ClinicalTrials.gov Identifier: NCT01964118
Recruitment Status : Completed
First Posted : October 17, 2013
Last Update Posted : May 24, 2021
Information provided by (Responsible Party):
Washington University School of Medicine

Brief Summary:
The purpose of Intermittent Fasting study is to investigate whether intermittent fasting could decrease the chronic inflammation levels in overweight/obese people.

Condition or disease Intervention/treatment Phase
Obesity Overweight Other: Intermittent Fasting group Other: control group Not Applicable

Detailed Description:
The primary objective of this study is to determine whether or not IF reduces the level of chronic inflammation as evidenced by a decrease in high sensitive C-reactive protein (hsCRP), as the main outcome measure

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 50 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Can Intermittent Fasting Mimic the Metabolic and Cardiovascular and Anti-aging Effects of Calorie Restriction?
Actual Study Start Date : July 2013
Actual Primary Completion Date : September 2016
Actual Study Completion Date : September 2016

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Control group
The participants randomized to the crossover group begin study participation as a control group (no changes in food intake) for the first 6 months and switch to IF for the remaining 6 months of the study.
Other: control group
usual diet for 6 months and intermittent fasting for other 6 months

Experimental: Intermittent Fasting group
Participant with a BMI between 28 and 35 kg/m2 will fast 3 non-consecutive days per week, whereas participant with a BMI between 24 and 27.9 kg/m2 will fast 2 non-consecutive days per week. Individuals following intermittent fasting (IF) will work with the study dietitian to design their weekly meal plans and menus for the non-fasting days. The subjects following IF will be asked to skip breakfast, lunch, dinner, snacks, and calorie-containing beverages on the fast days, but we will give them the option to consume at dinner a big salad (i.e. non-starchy raw and/or cooked vegetables dressed with 2 tablespoons of salad dressing prepared with vegetable oil, vinegar and seasonings).
Other: Intermittent Fasting group
Intermittent fasting for 12 months

Primary Outcome Measures :
  1. Change in HSCRP ( high sensitivity C-reactive protein) at 6 and 12 months [ Time Frame: Every 6 months- baseline, 6 month and 12 month ]
    HSCRP would be measured in mg/L

Information from the National Library of Medicine

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Ages Eligible for Study:   30 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • The participants in this study will be 50 men and women in the 30 to 65 year age range, who have a BMI in the high normal to moderately obese range (i.e. 24 to 35 kg/m2),
  • Participants who are eating usual US diets and are sedentary to moderately active (i.e. not exercise trained).

Exclusion Criteria:

  • History of any chronic disease process that could interfere with interpretation of results
  • Smoking, pregnancy, alcoholism, psychiatric problems, life situations that would interfere with study participation and compliance.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01964118

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United States, Missouri
Washington University School of Medicine
Saint Louis, Missouri, United States, 63110
Sponsors and Collaborators
Washington University School of Medicine
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Principal Investigator: Valeria Tosti, MD Washington University School of Medicine
Principal Investigator: Luigi Fontana, MD, Phd Washington University School of Medicine
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Washington University School of Medicine
ClinicalTrials.gov Identifier: NCT01964118    
Other Study ID Numbers: 201303081
First Posted: October 17, 2013    Key Record Dates
Last Update Posted: May 24, 2021
Last Verified: May 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Plan Description: Only to publish
Keywords provided by Washington University School of Medicine:
intermittent fasting
calorie restriction
Additional relevant MeSH terms:
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Body Weight