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Showing 1–24 of 49 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Low Calcium Diet Clear all
Suspended Not applicable Interventional Accepts healthy volunteers

The Effect of Nutritional Supplementation on Actinic Purpura: A Pilot Study

NCT06840574
View directory record Official record
Conditions
Skin Health, Skin Aging of Face and Hands, Healthy, Ecchymosis
Interventions
Cyruta Plus: A Whole-Food Based Vitamin C supplement containing organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine adrenal Cytosol™ extract, oat flour, honey, ascorbic acid, Low Dose Vitamin C, High Dose Vitamin C
Dietary Supplement
Lead sponsor
Standard Process Inc.
Industry
Eligibility
55 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Active, not recruiting Not applicable Interventional

A Study for Cardiovascular and Lifestyle Risk Factors in Prostate Cancer Patients

NCT03127631
View directory record Official record
Conditions
Prostate Cancer, Cardiovascular Disease
Interventions
Nutrition, Exercise, Smoking cessation, Statin (such as Simvastatin, Atorvastatin, Rosuvastatin, Pravastatin), ACE inhibitor
Behavioral · Drug
Lead sponsor
McMaster University
Other
Eligibility
45 Years and older · Male only
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
4
States / cities
Augusta, Georgia • Kansas City, Kansas • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Phase 2 Interventional

Survival TRaining for ENhancing Total Health (STRENGTH)

NCT00068458
View directory record Official record
Conditions
Breast Cancer, Depression, Weight Changes
Interventions
Calcium-Rich Diet, Arm 2: Exercise + Calcium-Rich Diet, Exercise + Fruit & Vegetable, Low Fat + Calcium Diet
Dietary Supplement · Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
4
States / cities
Durham, North Carolina • Goldsboro, North Carolina • Winston-Salem, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2017 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Early Phase 1 Interventional

Effects of a Western-type Diet on Colorectal Inflammation

NCT00866450
View directory record Official record
Conditions
Colorectal Inflammation
Interventions
Western style diet (high fat and low in calcium), Prudent-style diet (low fat and high in calcium)
Dietary Supplement
Lead sponsor
Rockefeller University
Other
Eligibility
50 Years to 72 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Calcium Metabolism in Mexican American Adolescents

NCT01277185
View directory record Official record
Conditions
Osteoporosis
Interventions
Low Calcium Diet, High Calcium Diet
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
12 Years to 15 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 8, 2018 · Synced Sep 6, 2026, 5:25 AM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

Effect of Blueberries on Bone Turnover

NCT02630797
View directory record Official record
Conditions
Osteoporosis, Postmenopausal, Bone Loss, Age-related
Interventions
Blueberry Baseline, Blueberry Low, Blueberry Medium, Blueberry High
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
45 Years to 70 Years · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 6, 2018 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving Community Ambulation After Hip Fracture

NCT01783704
View directory record Official record
Conditions
Hip Fracture
Interventions
Nutrition, PUSH, PULSE
Dietary Supplement · Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
60 Years and older
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
4
States / cities
Farmington, Connecticut • Baltimore, Maryland • Lebanon, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2022 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Targeted Protein Fortification in Extremely Low Birth Weight Preterm Infants

NCT02943746
View directory record Official record
Conditions
Premature Infants
Interventions
Standard Protein Diet, High Protein Diet
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
14 Days and older
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Oxalate and Innate Immunity in Kidney Stone Disease

NCT04051346
View directory record Official record
Conditions
Kidney Stone
Interventions
Low Oxalate Diet, High Oxalate Diet
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 60 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Recruiting Phase 4 Interventional

Vitamin D Homeostasis in Sarcoidosis

NCT03621553
View directory record Official record
Conditions
Sarcoidosis, Vitamin D Insufficiency
Interventions
Ergocalciferol, Placebo, Calcium Citrate with Vitamin D2
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Recruiting Phase 2Phase 3 Interventional

Surviving PEA in Roanoke (SPEAR) Study

NCT05283850
View directory record Official record
Conditions
Cardiac Arrest, Pulseless Electrical Activity
Interventions
High Calcium, Low Sodium (HCLS) Crystalloid Therapy, High Calcium, High Sodium (HCHS) Crystalloid Therapy
Drug
Lead sponsor
Carol Bernier
Other
Eligibility
18 Years and older
Enrollment
342 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Roanoke, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 16, 2022 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Phase 2 Interventional Results available

A Study of LY3015014 in Participants With High Cholesterol

NCT01890967
View directory record Official record
Conditions
Hypercholesterolemia
Interventions
LY3015014, Placebo, Statin, Ezetimibe
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years to 80 Years
Enrollment
527 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
15
States / cities
Encino, California • Lancaster, California • Spring Valley, California + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2019 · Synced Sep 6, 2026, 5:25 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Effects of Potassium Citrate in Urine of Children With Elevated Calcium in Urine and Kidney Stones

NCT00120731
View directory record Official record
Conditions
Kidney Calculi
Interventions
Potassium Citrate, Acetazolamide, Diet low in oxalate and purines
Drug · Behavioral
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
5 Years to 17 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 4, 2020 · Synced Sep 6, 2026, 5:25 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Influence of Obesity on Oxalate Metabolism and Handling in Calcium Oxalate Stone Formers

NCT04333745
View directory record Official record
Conditions
Kidney Stone
Interventions
Controlled Diet, Carbon-13 Oxalate and Sucralose Ingestion
Other · Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years to 75 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
2
States / cities
Birmingham, Alabama • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional

Therapeutic Diets in Alzheimer's Disease

NCT03860792
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Ketogenic Diet, Therapeutic Lifestyles Changes Diet
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
50 Years to 90 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Fairway, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Trial of the Ideal Protein System Versus Low Fat Diet for Weight Loss

NCT03515889
View directory record Official record
Conditions
Weight Loss
Interventions
Ideal Protein Weight Loss Method, Standard Weight Loss
Behavioral
Lead sponsor
Tulane University
Other
Eligibility
22 Years to 79 Years
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Bogalusa, Louisiana
Source: ClinicalTrials.gov public record
Updated Nov 21, 2024 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

CARDIA-Salt Sensitivity of Blood Pressure (SSBP)

NCT04258332
View directory record Official record
Conditions
Salt Sensitivity of Blood Pressure, Hypertension
Interventions
High Salt Diet, Low Salt Diet
Dietary Supplement
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
50 Years to 70 Years
Enrollment
281 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
2
States / cities
Birmingham, Alabama • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Oxalate Formation From Ascorbic Acid

NCT04603898
View directory record Official record
Conditions
Kidney Stone
Interventions
Low Oxalate Diet, Carbon-13 Ascorbic Acid Oral Load
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Results available

Calcium and Phosphorus Whole-Body Balance and Kinetics in Patients With Moderate Chronic Kidney Disease

NCT04019379
View directory record Official record
Conditions
Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder, Chronic Kidney Diseases
Interventions
High Phosphorus Diet, Low Phosphorus Diet
Other
Lead sponsor
University of Minnesota
Other
Eligibility
30 Years to 75 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Sodium Intake on Calcium Retention in Girls

NCT01564238
View directory record Official record
Conditions
Osteoporosis
Interventions
Low Na diet (1.3 g/d), High sodium diet (3.8 g/d)
Other
Lead sponsor
Purdue University
Other
Eligibility
11 Years to 15 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2000
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 8, 2018 · Synced Sep 6, 2026, 5:25 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Oxalate-Driven Host Responses in Kidney Stone Disease

NCT05417568
View directory record Official record
Conditions
Kidney Stones
Interventions
Low Oxalate Diet, High Oxalate Diet
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 60 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Phase 2 Reduction of Dietary Mycotoxin Exposure by ACCS100"

NCT01677195
View directory record Official record
Conditions
Dietary Carcinogenesis
Interventions
ACCS100, Placebo
Drug
Lead sponsor
Texas Enterosorbents Incorporated
Industry
Eligibility
18 Years to 85 Years
Enrollment
234 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 18, 2016 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Metabolic Effects of Different Weight Loss Diets

NCT00422630
View directory record Official record
Conditions
Metabolic Syndrome X, Obesity, Insulin Resistance, Hypertension, Diabetes
Interventions
The DASH diet, The low glycemic Index Diet, Reduced calorie American Diet
Behavioral
Lead sponsor
Rockefeller University
Other
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 12, 2011 · Synced Sep 6, 2026, 5:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Calcium Retention as Influenced by Dietary Components That Induce an Acid Load

NCT00620763
View directory record Official record
Conditions
Healthy
Interventions
High Meat - High Potential Renal Acid Load (PRAL) diet, Low Protein - Low Potential Renal Acid Load (PRAL) diet
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
40 Years to 75 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 1, 2018 · Synced Sep 6, 2026, 5:25 AM EDT