The Fasting II Study
Primary Purpose
Diabetes, Metabolic Diseases
Status
Completed
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
water-only 24-hour fasting once per week for 6 weeks
Sponsored by

About this trial
This is an interventional other trial for Diabetes focused on measuring Diabetes, Fasting, Pre-diabetes, Hemoglobin A1C
Eligibility Criteria
Inclusion Criteria:
- Male or non-pregnant female, ≥30 and <70 years of age.
- Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of any study procedures.
Prior evidence of pre-diabetic state, with one of the following:
- Pre-diabetic with a measured hemoglobin A1c (HbA1c) ≥6.0% or fasting glucose >100 mg/dL without a clinical diabetes diagnosis
- Clinically-diagnosed type II diabetic with HbA1c ≥6.0% or fasting glucose ≥110 mg/dL and whose disease is controlled by diet alone.
Evidence of metabolic syndrome by having at least 3 of the following 5 criteria:
- Fasting glucose level >100 mg/dL.
- Blood pressure ≥135 mmHg systolic or ≥85 mmHg diastolic, or use of an antihypertensive medication.
- High-density lipoprotein cholesterol <40 mg/dL in males or <50 mg/dL in females.
- Triglycerides ≥150 mg/dL or use of a cholesterol-lowering medication.
- Waist circumference >40 inches (102 cm) for males or >35 inches (88 cm) for females (or body mass index >25 kg/m2).
Exclusion Criteria:
- Pregnant and/or lactating women and women of child bearing potential who are not using acceptable means of contraception. Women of childbearing potential must be using adequate measures of contraception (as determined by the Principal Investigator) to avoid pregnancy and should be highly unlikely to conceive during the study period. Women of childbearing potential must have a negative pregnancy test at screen.
- Diabetics taking any of the following anti-diabetic medications: insulin, metformin, thiazolidinediones, sulfonylureas, alpha-glucosidase inhibitors, meglitinides, or incretins.
- Prior experience with fasting more than once per month (for 20 hours or more), on average during the last year.
- Very low body mass index (BMI) (<18.5 kg/m2) or high BMI (>40 kg/m2).
- Individuals who are nutritionally compromised, as assessed by the Principal Investigator.
- Any immunodeficiency or prior solid organ transplantation or renal disease.
- Participation in any other clinical trials involving investigational or marketed products within 30 days prior to entry in the study.
- Other conditions that in the opinion of the Principal Investigator may increase risk to the subject and/or compromise the quality of the clinical trial.
Sites / Locations
- Intermountain Medical Center
- Intermountain Medical Center
Arms of the Study
Arm 1
Arm Type
Other
Arm Label
water-only 24-hour fasting once per week for 6 weeks
Arm Description
Outcomes
Primary Outcome Measures
Difference in Mean Glucose Level Between Baseline and the End of the Sixth Week.
Secondary Outcome Measures
Difference in Weight Between Baseline and the End of the Sixth Week
Difference in Low-density Lipoprotein Cholesterol (LDL-C) Between Baseline and the End of the Sixth Week.
Difference in Human Growth Hormone (HGH) Between Baseline and the End of the Sixth Week.
Difference in Red Blood Cell Count Between Baseline and the End of the Sixth Week.
Full Information
NCT ID
NCT01792986
First Posted
February 12, 2013
Last Updated
February 10, 2017
Sponsor
Intermountain Health Care, Inc.
Collaborators
Intermountain Research and Medical Foundation
1. Study Identification
Unique Protocol Identification Number
NCT01792986
Brief Title
The Fasting II Study
Official Title
Preparatory Study to Determine Which Risk Markers May be Reduced by Fasting and Should be Evaluated in a Future Randomized Trial
Study Type
Interventional
2. Study Status
Record Verification Date
July 2013
Overall Recruitment Status
Completed
Study Start Date
February 2013 (undefined)
Primary Completion Date
June 2013 (Actual)
Study Completion Date
June 2013 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Intermountain Health Care, Inc.
Collaborators
Intermountain Research and Medical Foundation
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
This study will determine whether an intensive fasting protocol alters hemoglobin A1c measurements or other markers of metabolic and cardiovascular risk by performing a 5-week clinical trial of fasting among 12 pre-diabetic individuals or diabetics whose disease is controlled by diet. Participants will undergo a 5-week intervention of once-per-week 24-hour water-only fasting, including at baseline and at the end of the week for each week of the study (a total of 6 24-hour fasts).
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Diabetes, Metabolic Diseases
Keywords
Diabetes, Fasting, Pre-diabetes, Hemoglobin A1C
7. Study Design
Primary Purpose
Other
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
N/A
Enrollment
12 (Actual)
8. Arms, Groups, and Interventions
Arm Title
water-only 24-hour fasting once per week for 6 weeks
Arm Type
Other
Intervention Type
Behavioral
Intervention Name(s)
water-only 24-hour fasting once per week for 6 weeks
Primary Outcome Measure Information:
Title
Difference in Mean Glucose Level Between Baseline and the End of the Sixth Week.
Time Frame
6 weeks
Secondary Outcome Measure Information:
Title
Difference in Weight Between Baseline and the End of the Sixth Week
Time Frame
6 weeks
Title
Difference in Low-density Lipoprotein Cholesterol (LDL-C) Between Baseline and the End of the Sixth Week.
Time Frame
6 weeks
Title
Difference in Human Growth Hormone (HGH) Between Baseline and the End of the Sixth Week.
Time Frame
6 weeks
Title
Difference in Red Blood Cell Count Between Baseline and the End of the Sixth Week.
Time Frame
6 weeks
10. Eligibility
Sex
All
Minimum Age & Unit of Time
30 Years
Maximum Age & Unit of Time
69 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Male or non-pregnant female, ≥30 and <70 years of age.
Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of any study procedures.
Prior evidence of pre-diabetic state, with one of the following:
Pre-diabetic with a measured hemoglobin A1c (HbA1c) ≥6.0% or fasting glucose >100 mg/dL without a clinical diabetes diagnosis
Clinically-diagnosed type II diabetic with HbA1c ≥6.0% or fasting glucose ≥110 mg/dL and whose disease is controlled by diet alone.
Evidence of metabolic syndrome by having at least 3 of the following 5 criteria:
Fasting glucose level >100 mg/dL.
Blood pressure ≥135 mmHg systolic or ≥85 mmHg diastolic, or use of an antihypertensive medication.
High-density lipoprotein cholesterol <40 mg/dL in males or <50 mg/dL in females.
Triglycerides ≥150 mg/dL or use of a cholesterol-lowering medication.
Waist circumference >40 inches (102 cm) for males or >35 inches (88 cm) for females (or body mass index >25 kg/m2).
Exclusion Criteria:
Pregnant and/or lactating women and women of child bearing potential who are not using acceptable means of contraception. Women of childbearing potential must be using adequate measures of contraception (as determined by the Principal Investigator) to avoid pregnancy and should be highly unlikely to conceive during the study period. Women of childbearing potential must have a negative pregnancy test at screen.
Diabetics taking any of the following anti-diabetic medications: insulin, metformin, thiazolidinediones, sulfonylureas, alpha-glucosidase inhibitors, meglitinides, or incretins.
Prior experience with fasting more than once per month (for 20 hours or more), on average during the last year.
Very low body mass index (BMI) (<18.5 kg/m2) or high BMI (>40 kg/m2).
Individuals who are nutritionally compromised, as assessed by the Principal Investigator.
Any immunodeficiency or prior solid organ transplantation or renal disease.
Participation in any other clinical trials involving investigational or marketed products within 30 days prior to entry in the study.
Other conditions that in the opinion of the Principal Investigator may increase risk to the subject and/or compromise the quality of the clinical trial.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Benjamin D Horne, PhD, MPH
Organizational Affiliation
Intermountain Health Care, Inc.
Official's Role
Principal Investigator
Facility Information:
Facility Name
Intermountain Medical Center
City
Murray
State/Province
Utah
ZIP/Postal Code
84107
Country
United States
Facility Name
Intermountain Medical Center
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84107
Country
United States
12. IPD Sharing Statement
Learn more about this trial
The Fasting II Study
We'll reach out to this number within 24 hrs