| Not Yet Recruiting | Effect of Prebiotics in Saudi Adults With Type 2 Diabetes NCT07464691 | Princess Nourah Bint Abdulrahman University | N/A |
| Not Yet Recruiting | Mediterranean Diet Uptake and Nutrition on Child Health, Inflammation, and Early-life Symbiosis (MUNCHIES) Stu NCT07309536 | University of New Brunswick | N/A |
| Not Yet Recruiting | Blackcurrants Modify Gut Microbiota and Reduce Osteoporosis Risk in Postmenopausal Females NCT07365514 | University of Connecticut | Phase 1 |
| Recruiting | Flourish: Exploring the Early Infant Gut Microbiome NCT07333482 | Seeding Inc | N/A |
| Not Yet Recruiting | Effect of Antifungals on the Intestinal Microbiome - a Randomized, Controlled, Proof-of-concept Trial NCT07295314 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | EARLY_Phase 1 |
| Recruiting | Impact of Transcatheter Aortic Valve Implantation (TAVI) on the Gut Microbiota in Patients With Aortic Valve S NCT07052071 | Hippocration General Hospital | — |
| Recruiting | Goat Milk-Derived Formula vs. Undiluted Goat Milk in Infants Unable to Exclusively Breastfeed: Growth and Biom NCT07225153 | Aga Khan University | N/A |
| Recruiting | Early Avocado Exposure on Development and the Gut Microbiome in American Hispanic Infants NCT06876935 | Arizona State University | N/A |
| Recruiting | The Effect Cranberry-Based Products on the Female Microbiome NCT07109713 | Ocean Spray Cranberries, Inc. | N/A |
| Recruiting | Effects of Milk-based Drinks on Gut Microbiome, Sleep and Cardiometabolic Markers NCT07071181 | Sheffield Hallam University | N/A |
| Recruiting | Feasibility and Potential Efficacy of Herbs and Spices for Improving Dietary Quality in College Students: A Pi NCT07082348 | University of Nevada, Las Vegas | N/A |
| Completed | PRECOG Pilot Project NCT06911957 | University of Reading | N/A |
| Enrolling By Invitation | Developing Interventions for Protecting HIV-Exposed Uninfected Infants Against Severe Infections NCT07052409 | University of Colorado, Denver | N/A |
| Enrolling By Invitation | Impact of SCFA Supplementation on Gut Microbiome Composition of Kidney Transplant Recipients NCT07024238 | University Hospital, Martin | N/A |
| Completed | Exploring Glycemic Responses Through Continuous Monitoring in a Healthy Population NCT06900439 | Zoe Global Limited | N/A |
| Completed | Fermented Vegetables and Gut Microbiome Pilot Study NCT06883994 | USDA, Western Human Nutrition Research Center | N/A |
| Active Not Recruiting | The Rufaida Project: Researching the Impact of Ramadan Fasting on the Gut and Vaginal Microbiome NCT07001358 | University Hospital, Antwerp | — |
| Recruiting | Effects of Mango or Low-Fat Cookie Consumption on Gut Health, and Its Relationship With Mental, Sexual and Ski NCT06800833 | San Diego State University | N/A |
| Recruiting | PRObing The Efficacy of Commercial Stage Storage Buffers and Evaluating Gut Metaproteome Variability Between I NCT06423508 | University of Vienna | — |
| Recruiting | Microbiome and Diet in Parkinson's Disease NCT06207136 | University of British Columbia | N/A |
| Withdrawn | Effect of Fenugreek Fibre on Gut Microbiome NCT06006416 | RDC Clinical Pty Ltd | Phase 3 |
| Recruiting | Understanding the Efficacy of Dietary Supplement on Fungal Mycobiota in Healthy Volunteers: A Pilot Study NCT06433310 | Weill Medical College of Cornell University | Phase 4 |
| Recruiting | How a Single Workout Affects Gut Bugs in Women With Different Fitness Levels and Body Types NCT06691100 | George Washington University | N/A |
| Recruiting | Impact of Training Load on the Gut miCrobiome And Its Relation to exeRcise Performance, mUscle Phenotype, and NCT07481578 | Stefan De Smet | N/A |
| Recruiting | Investigating the Impact of the Seaweed Derived Food Additive, Carrageenan, on the Human Gut Microbiome NCT06738329 | University of Reading | N/A |
| Recruiting | Wild Blueberries for Gut, Brain, and Heart Health in Adults With High Blood Pressure NCT06735599 | Georgia State University | N/A |
| Completed | The Role of L-arginine in Polycystic Ovary Syndrome NCT06728644 | Shanghai 10th People's Hospital | N/A |
| Active Not Recruiting | Effect of The Substitution of Animal Protein by Soya-Based Fermented Product on Human Gut Microbiome NCT06304480 | University College Cork | N/A |
| Not Yet Recruiting | Assessment of Microorganisms and Host Response In Liver Diseases NCT06291571 | University of Aberdeen | — |
| Terminated | Fungal Fiber for Gut Health NCT06404749 | Future Biome SA | N/A |
| Active Not Recruiting | The Effects of Jing-Si Herbal Tea Liquid Packets and Jing-Si Herbal Tang Heng Power Drink NCT06522412 | Buddhist Tzu Chi General Hospital | N/A |
| Completed | ZOE BIOME Study: Biotics Influence on Microbiome Ecosystem NCT06231706 | King's College London | N/A |
| Completed | Gut Microbiota in Mood Disorders in Lebanese Population NCT05646784 | St Joseph University, Beirut, Lebanon | N/A |
| Recruiting | Nutrition, Gut Microbiota and Health : Feces Sample Collection in NutriNet-Santé Participants NCT06941090 | Institut National de la Santé Et de la Recherche Médicale, France | N/A |
| Not Yet Recruiting | Gut Microbiome in People Living With HIV and HBV NCT06130137 | Kangbuk Samsung Hospital | — |
| Recruiting | Impact of Gut Microbiome on Metabolic and Bowel Function During the First Year After Spinal Cord Injury NCT05670288 | University of Alabama at Birmingham | — |
| Recruiting | The Gut Microbiome and Serum Metabolites As a Biological Mechanism Underlying Pain in Kidney Transplantation NCT06206486 | University of Illinois at Chicago | — |
| Completed | Yogurt and GI Health NCT05931471 | USDA, Western Human Nutrition Research Center | N/A |
| Completed | INF108F in Infants With Food Protein Induced Proctocolitis NCT05793112 | Massachusetts General Hospital | Phase 4 |
| Recruiting | Curcumin and Retinal Study NCT05774704 | Texas Tech University Health Sciences Center | Phase 1 / Phase 2 |
| Unknown | Targeted Metabolomics to Decipher Dietary Contributions to Pediatric Inflammatory Bowel Disease (IBD) - Main S NCT05014243 | University of Colorado, Denver | — |
| Recruiting | Garden-fresh Foods and Gut Microbiomes NCT06506786 | University of Oregon | N/A |
| Active Not Recruiting | Infant Restore: Efficacy of Microbiome Analysis and Education NCT06424691 | Seeding Inc | N/A |
| Recruiting | Synbiotics and Fecal Microbiota Transplantation to Treat Non-Alcoholic Steatohepatitis NCT05821010 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | Phase 2 |
| Unknown | Gut-Brain-Axis/Lung-Brain-Axis and Mental Ill Health in Critical Illness NCT05580367 | University Hospital Southampton NHS Foundation Trust | — |
| Active Not Recruiting | Impact of Different Types of Higher Dietary Protein Intake on Sleep Quality in Singapore Older Adults NCT05400005 | National University of Singapore | N/A |
| Recruiting | Home-based Exercise and Physical Activity Intervention After Kidney Transplantation: Impact of Exercise Intens NCT06260579 | KU Leuven | N/A |
| Recruiting | Enhanced Nutritional Optimization in LVAD Trial NCT05655910 | Columbia University | N/A |
| Recruiting | Sex-differential Host-microbiome CVD Risk - A Longitudinal Cohort Approach NCT05334888 | Charite University, Berlin, Germany | — |
| Completed | RubusElite Efficacy Testing of a Novel High Protein, Berry Polyphenol Enriched Dairy Beverage NCT05463835 | University College Cork | N/A |
| Completed | Effect of Probiotics on Endurance Athletes' Microbiome at Rest and Post-race NCT05615961 | Liverpool John Moores University | N/A |
| Unknown | Effect of Jing Si Herbal Tea on Inflammation in Patients With Cardiovascular Disease NCT05420987 | Buddhist Tzu Chi General Hospital | N/A |
| Recruiting | The Path Study: Cognitive and Inflammation Targeted Gut-brain Interventions in Alcohol; Probiotics, Alcohol, T NCT05090267 | University of Florida | N/A |
| Unknown | The Association of Gut Microbiota With COVID 19 Infection in Children NCT05303155 | Hallym University Kangnam Sacred Heart Hospital | — |
| Withdrawn | Combining HIIT and n-3 PUFA Supplementation to Reduce Inflammation and Improve Metabolic Health (HIIT&PUFA) NCT05297383 | Texas Tech University | N/A |
| Completed | Probiotics for Enhanced Tissue Carotenoid Status in Premenopausal Women NCT04511052 | McGill University | Phase 1 / Phase 2 |
| Active Not Recruiting | Effects of Complementary Feeding on Infant Growth and Gut Health NCT05012930 | University of Colorado, Denver | N/A |
| Completed | Salmon Intake and Gut Health in Adults NCT04792216 | University of Colorado, Denver | N/A |
| Completed | Characterisation of the Gut Microbiota in Term Infants After Maternal Supplementation of Probiotics NCT04987593 | Chr Hansen | N/A |
| Recruiting | Gut Microbiome and Treatment for Gynecological Cancer Patients Receiving Immunotherapy NCT04957511 | Viome | — |
| Unknown | The Effect of Probiotics and Vitamin D Supplementation on Sport Performance in MMA Athletes. NCT04759729 | Medical University of Gdansk | N/A |
| Unknown | Gut Microbiome and Ventricular Arrhythmias NCT04466072 | North Florida Foundation for Research and Education | — |
| Unknown | The Correlation Between Gut Microbiome-host Interaction and Ventricular Arrhythmias. NCT04447365 | North Florida Foundation for Research and Education | — |
| Active Not Recruiting | Low Sugar Protein Pacing, Intermittent Fasting Diet in Men and Women NCT04327141 | Skidmore College | N/A |
| Completed | Impact of Nutritional Supplementation on Sleep Quality and Gut Microbiome Composition in Older Adults NCT04078724 | National University of Singapore | N/A |
| Recruiting | A Study to Explore the Role of Gut Flora in COVID-19 Infection NCT04359836 | ProgenaBiome | — |
| Unknown | The Effects of Early Complementary Feeding on Growth, Neurodevelopment, Sleep and Gut Health NCT04137445 | University of Colorado, Denver | N/A |
| Completed | Evaluation of Dietary Milk Polar Lipids on Serum Cholesterol and Gut Microbiota in Healthy Adults NCT04208815 | University of Connecticut | N/A |
| Active Not Recruiting | Gut Microbe Composition, Exercise, and Breast Breast Cancer Survivors NCT04088708 | University of Alabama at Birmingham | N/A |
| Unknown | Cocoa-rich Bioflavanol Supplementation Effects During Cold Exposure NCT04359082 | United States Army Research Institute of Environmental Medicine | N/A |
| Unknown | Fecal Microbiota in Preterm Birth NCT03975764 | Rambam Health Care Campus | — |
| Recruiting | Mother-infant Microbiota Transmission and Its Link to the Health of the Baby NCT04117321 | Chinese University of Hong Kong | — |
| Completed | Fiber Blends and Gut Microbiota (FB) NCT04101344 | Washington University School of Medicine | N/A |
| Suspended | A Non-Interventional Pilot Study to Explore the Role of Gut Flora in Disease NCT04031469 | ProgenaBiome | — |
| Unknown | Gut Microbiome and Metabolic Pathways Changes in Vitiligo NCT03797417 | Xijing Hospital | — |
| Terminated | User Testing of the Evivo Screening Test NCT03601936 | Evolve BioSystems, Inc. | N/A |
| Completed | The Influence of Oral Probiotics on the Microbiome and Lipidome NCT03605108 | University of California, Davis | N/A |
| Completed | Rescuing the Microbiome Effectively With Different Doses of B. Infantis in Infants NCT03476447 | Evolve BioSystems, Inc. | N/A |
| Completed | Corn and Heart Health Study NCT03967990 | Arizona State University | N/A |
| Recruiting | Fecal Microbiota Transplant National Registry NCT03325855 | American Gastroenterological Association | — |
| Completed | The Effect of Sleep Apnea and Hypertension on Gut Microbiome NCT05266131 | Peking University First Hospital | — |
| Completed | Mechanisms of Inflammation, Immunity, Islet Cell and Intestinal Hormone Changes in Youth at Risk for Diabetes NCT04031222 | The Hospital for Sick Children | — |
| Completed | Effects of a Novel Food Product Containing Microbiota Accessible Carbohydrates on the Human Microbiome NCT03058575 | Access Business Group | N/A |
| Completed | Neonatal Microbiome Validity Study NCT02655250 | State University of New York at Buffalo | — |
| Recruiting | Gut Microbiota of Preterm Infants and Full-term Infants at Early Life NCT03373721 | Xinhua Hospital, Shanghai Jiao Tong University School of Medicine | — |
| Completed | NEOBIFI: Clinical Trial for the Prevention and/or Reduction of the Incidence of Colics in Infants NCT03219931 | Azienda Ospedaliero Universitaria Maggiore della Carita | Phase 4 |
| Unknown | Endoscopic Assessment and Prediction of Microbiome-modifying Interventions NCT03218579 | Tel-Aviv Sourasky Medical Center | N/A |