An interventional study of Fasting First and Fed First in Cardiovascular Disease, sponsored by Intermountain Health Care, Inc.. Completed at 1 site in United States. Open to participants aged 18 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-07-17.
Sponsored by Intermountain Health Care, Inc. · Not applicable, Interventional, and Treatment
The purpose of this study is to evaluate the effect of fasting on physical changes associated with cardiovascular disease.
Coronary heart disease (CHD) is the largest contributor to morbidity and mortality in the Western world and is associated with high-calorie diet, high body mass, and a variety of other factors. CHD can lead to myocardial infarction (MI) and other embolic events. A growing body of evidence suggests that relatively low caloric intake in the diets of a variety of animals increases longevity and preliminary evidence among humans indicates that such caloric restriction reduces risk factors for CHD, including cholesterol levels, blood pressure, glucose, and obesity. Caloric restriction has also been shown to alter the expression of certain genes, especially the forkhead box (FOX) O and sirtuin (SIRT) genes whose over-expression has been shown to increase longevity in animal models. Extended avoidance of caloric intake, also called fasting or short-term starvation, has been shown to increase expression of the FOXA genes that have similar sequence and function as the FOXO genes and that have been shown to increase longevity among animals regardless of FOXO function. We recently demonstrated that the risk of CHD was significantly lower among patients who reported a history of routine periodic extended fasting. The two primary hypotheses for this observation are that fasting may improve individual ability to control dietary intake or that fasting may initiate a cascade of protective mechanisms that preserve cellular and metabolic health.
4,904 studies on the registry are indexed under Cardiovascular Diseases; 919 are open to participants now.
This study's enrollment of 30 is below the median of 100 across 2,738 interventional studies indexed under Cardiovascular Diseases.
Browse Cardiovascular Diseases studies →Intermountain Health Care, Inc. is the lead sponsor of 118 studies on the registry; 15 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 3 (33%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
28±4 hours of water-only fasting followed by 28±4 hours fed
Behavioral: Fasting First
28± 4 hours fed followed by 28± 4 hours of fasting
Behavioral: Fed First
28±4 hours of water-only fasting followed by 28±4 hours fed
28± 4 hours fed followed by 28± 4 hours of fasting
Change From Baseline in Participant Glucose When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Human Growth Hormone (HGH) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Insulin When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Homeostasis Model Assessment-Insulin Resistance (HOMA-IR) When Fasting and Fed
HOMA-IR is used to measure the severity of insulin resistance. Healthy Range: 1.0 (0.5-1.4) Less than 1.0 is optimal Above 1.9 indicates early insulin resistance Above 2.9 indicates significant insulin resistance
Time frame: Baseline and 3 days
Change From Baseline in Participant Glycogen-Like Protein-1 (GLP-1) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Adiponectin When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Fibroblast Growth Factor-21 (FGF-21) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant White Blood Cell Count (WBC) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Hemoglobin When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Red Blood Cell Count (RBC) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Hematocrit When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Platelet Count When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Mean Corpuscular Volume (MCV) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Mean Corpuscular Hemoglobin (MCH) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Mean Corpuscular Hemoglobin Concentration (MCHC) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Red Cell Distribution Width (RDW) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Mean Platelet Volume (MPV) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Bicarbonate When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Sodium When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Chloride When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Blood Urea Nitrogen (BUN) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Calcium When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Potassium When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Creatinine When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Total Cholesterol (TC) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Low-Density Lipoprotein Cholesterol (LDL-C) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant High-Density Lipoprotein Cholesterol (HDL-C) When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Triglycerides When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant TC/HDL Ratio When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Weight When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Waist Circumference When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Systolic Blood Pressure (SBP), Supine When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant Diastolic Blood Pressure (DBP), Supine When Fasting and Fed
Time frame: Baseline and 3 days
Change From Baseline in Participant High Sensitivity C-Reactive Protein (hsCRP) When Fasting and Fed
Time frame: Baseline and 3 days
| Milestone | Fasting Day First | Fed Day First |
|---|---|---|
| Started | 16 | 14 |
| Completed | 16 | 14 |
| Not completed | 0 | 0 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Glucose When Fasting and Fed | 83.3 ± 15.8 | -8.0 ± 15.4 | 5.9 ± 16.6 |
| ng/mL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Human Growth Hormone (HGH) When Fasting and Fed | 0.32 ± 0.47 | 1.54 ± 2.63 | -1.14 ± 1.66 |
| mU/L | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Insulin When Fasting and Fed | 23.6 ± 17.8 | -19.0 ± 29.3 | -1.6 ± 16.2 |
HOMA-IR is used to measure the severity of insulin resistance. Healthy Range: 1.0 (0.5-1.4) Less than 1.0 is optimal Above 1.9 indicates early insulin resistance Above 2.9 indicates significant insulin resistance
| units on a scale | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Homeostasis Model Assessment-Insulin Resistance (HOMA-IR) When Fasting and Fed | 0.66 ± 0.051 | -0.35 ± 0.53 | -.02 ± 0.30 |
| ng/mL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Glycogen-Like Protein-1 (GLP-1) When Fasting and Fed | 1.77 ± 0.79 | -0.27 ± 0.51 | 0.07 ± 0.51 |
| ratio of high molecular to total | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Adiponectin When Fasting and Fed | 0.34 ± 0.17 | 0.02 ± 0.25 | -0.07 ± 0.25 |
| pg/mL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Fibroblast Growth Factor-21 (FGF-21) When Fasting and Fed | 190.3 ± 261.4 | -41.7 ± 128.9 | 9.5 ± 108.8 |
| cells/mL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant White Blood Cell Count (WBC) When Fasting and Fed | 6.0 ± 1.4 | 0.32 ± 1.31 | -0.12 ± 1.48 |
| g/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Hemoglobin When Fasting and Fed | 14.3 ± 1.3 | 0.46 ± 0.37 | -0.39 ± 0.52 |
| cells x 10^6/mL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Red Blood Cell Count (RBC) When Fasting and Fed | 4.7 ± 0.4 | 0.15 ± 0.13 | -0.11 ± 0.17 |
| % of red blood cells to whole blood | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Hematocrit When Fasting and Fed | 41.6 ± 3.6 | 1.3 ± 1.3 | -1.1 ± 1.5 |
| cells x 10^3/mL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Platelet Count When Fasting and Fed | 253.5 ± 58.2 | 2.8 ± 16.3 | 0.9 ± 13.8 |
| fL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Mean Corpuscular Volume (MCV) When Fasting and Fed | 89.11 ± 3.56 | -0.12 ± 0.68 | -0.18 ± 0.73 |
| pg | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Mean Corpuscular Hemoglobin (MCH) When Fasting and Fed | 30.66 ± 1.48 | -0.01 ± 0.33 | -0.07 ± 0.40 |
| g/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Mean Corpuscular Hemoglobin Concentration (MCHC) When Fasting and Fed | 34.4 ± 0.5 | 0.02 ± 0.49 | -0.01 ± 0.52 |
| % of SD of MCV to mean MCV | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Red Cell Distribution Width (RDW) When Fasting and Fed | 13.6 ± 0.82 | -0.04 ± 0.32 | -0.03 ± 0.37 |
| fL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Mean Platelet Volume (MPV) When Fasting and Fed | 8.17 ± 0.83 | 0.02 ± 0.49 | 0.03 ± 0.26 |
| mmol/L | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Bicarbonate When Fasting and Fed | 27.0 ± 2.5 | -1.4 ± 1.7 | 0.9 ± 2.2 |
| mmol/L | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Sodium When Fasting and Fed | 139.1 ± 2.0 | -1.4 ± 2.1 | 0.7 ± 2.0 |
| mmol/L | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Chloride When Fasting and Fed | 103.7 ± 2.7 | -1.3 ± 2.0 | 0.9 ± 2.3 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Blood Urea Nitrogen (BUN) When Fasting and Fed | 16.0 ± 3.7 | -1.2 ± 3.9 | 1.8 ± 2.6 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Calcium When Fasting and Fed | 9.4 ± 0.3 | 0.18 ± 0.34 | -0.12 ± 0.33 |
| mmol/L | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Potassium When Fasting and Fed | 4.29 ± 0.28 | -0.02 ± 0.30 | 0.02 ± 0.32 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Creatinine When Fasting and Fed | 0.848 ± 0.118 | 0.005 ± 0.09 | 0.002 ± 0.06 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Total Cholesterol (TC) When Fasting and Fed | 190.7 ± 30.7 | 9.5 ± 10.6 | -4.8 ± 11.0 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Low-Density Lipoprotein Cholesterol (LDL-C) When Fasting and Fed | 103.8 ± 33.8 | 23.1 ± 35.1 | -10.3 ± 28.2 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant High-Density Lipoprotein Cholesterol (HDL-C) When Fasting and Fed | 55.9 ± 14.3 | 3.7 ± 5.3 | -1.0 ± 3.6 |
| mg/dL | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Triglycerides When Fasting and Fed | 134.2 ± 77.0 | -52.4 ± 55.5 | 11.2 ± 38.1 |
| ratio | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant TC/HDL Ratio When Fasting and Fed | 3.63 ± 1.15 | -3.3 ± 17.7 | 0.0 ± 0.2 |
| kg | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Weight When Fasting and Fed | 81.3 ± 25.0 | -1.5 ± 0.9 | 0.5 ± 0.9 |
| cm | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Waist Circumference When Fasting and Fed | 86.7 ± 16.7 | -0.57 ± 1.4 | 0.54 ± 3.0 |
| mmHg | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Systolic Blood Pressure (SBP), Supine When Fasting and Fed | 114.0 ± 13.6 | -3.1 ± 8.4 | 1.0 ± 9.6 |
| mmHg | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant Diastolic Blood Pressure (DBP), Supine When Fasting and Fed | 67.2 ± 8.8 | 1.7 ± 7.4 | -1.2 ± 8.9 |
| mg/L | Baseline Value | Change While Fasting | Change When Fed |
|---|---|---|---|
| Change From Baseline in Participant High Sensitivity C-Reactive Protein (hsCRP) When Fasting and Fed | 1.35 ± 0.96 | 0.00 ± 0.44 | -0.10 ± 0.24 |
Collected over 3 days. Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Fasting Day First | — | 0/16 (0%) | 2/16 (12.5%) |
| Fed Day First | — | 0/14 (0%) | 1/14 (7.1%) |
| Event | Fasting Day First | Fed Day First |
|---|---|---|
| Mild HeadacheGeneral disorders | 1/16 | 1/14 |
| MigraineGeneral disorders | 1/16 | 0/14 |
| Age, Continuous(years) | Fasting Day First | Fed Day First | Total |
|---|---|---|---|
| Mean | 43.3 ± 13.6 | 44.0 ± 14.0 | 43.6 ± 13.5 |
| Sex: Female, Male(Participants) | Fasting Day First | Fed Day First | Total |
|---|---|---|---|
| Female | 11 | 9 | 20 |
| Male | 5 | 5 | 10 |
| Region of Enrollment(participants) | Fasting Day First | Fed Day First | Total |
|---|---|---|---|
| United States | 16 | 14 | 30 |
| Body Mass Index (BMI)(kg/m^2) | Fasting Day First | Fed Day First | Total |
|---|---|---|---|
| Mean | 28.4 ± 7.1 | 27.3 ± 6.1 | 27.8 ± 1.3 |
| Hemoglobin A1C(percentage) | Fasting Day First | Fed Day First | Total |
|---|---|---|---|
| Mean | 5.5 ± 0.3 | 5.3 ± 0.3 | 5.4 ± 0.3 |
This study is completed, as verified in Mar 2011. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Intermountain Health Care, Inc.