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92 Gut Microbiome Trials Near You
Power is an online platform that helps thousands of Gut Microbiome patients discover FDA-reviewed trials every day. Every trial we feature meets safety and ethical standards, giving patients an easy way to discover promising new treatments in the research stage.
Learn More About PowerWhole Wheat Bread for Prediabetes
Columbus, Ohio
This study will investigate the gut microbiota-mediated effects of whole wheat consumption on human health in adults with pre-diabetes. Participants will complete two phases of intervention in random order in which they will consume either whole wheat bread (4 servings) or white bread a day for two weeks prior to collecting specimens (stool, urine, and plasma/serum).
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:18 - 65
Key Eligibility Criteria
Disqualifiers:Liver Disease, Cardiovascular Disease, Diabetes, Cancer, Others
Must Not Be Taking:Hyperglycemia, Dyslipidemia, Antibiotics, Antifungals
40 Participants Needed
Microbiome Treatment for Colitis
Pittsburgh, Pennsylvania
Multiple retrospective studies suggest that the administration of corticosteroids to treat irAEs is safe, and does not compromise efficacy of ICI therapy in cancer patients. While \~67% of patients respond to corticosteroids, 33% of patients require biologic therapy such as TNFα inhibitors (e.g. infliximab), integrin α4β7 inhibitors (e.g. vedolizumab), or JAK/STAT inhibitors (e.g. tofactinib). This study aims to determine that distinct pathobionts govern the development of irCAE and IMC; and that the administration of hdFMT may reverse steroid-refractory irCAEs or IMC. The use of hdFMT has been shown to be effective in steroid and biologic (TNFα and/or integrin α₄β₇ inhibitor) refractory colitis in PD-1 and/or CTLA-4 ICI treated cancer patients in single-institution case series.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 2
Key Eligibility Criteria
Disqualifiers:Immunodeficiency, Immunosuppression, MDRO Risk, Others
Must Be Taking:Corticosteroids
30 Participants Needed
Fiber Supplementation for Heart Failure
Ann Arbor, Michigan
The study team is studying how increasing dietary fiber, specifically through adding potato starch to participant's diet, may impact the species of bacteria in participant's gut microbiome. The study team also wants to understand if adding potato starch to participant's diet helps these bacteria make more short chain fatty acids, a byproduct the team thinks may benefit participant's health.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Potato Allergy, Inflammatory Bowel Disease, Others
Must Not Be Taking:Antibiotics, Probiotics
30 Participants Needed
Chemotherapy + Stool Transplant for Pancreatic Cancer
London, Ontario
To confirm the safety of combining oral fecal microbiota transplantation (FMT) with gemcitabine and nab-paclitaxel chemotherapy as first line treatment in patients with unresectable or metastatic pancreatic ductal adenocarcinoma.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 1
Key Eligibility Criteria
Disqualifiers:Immunodeficiency, Chronic Intestinal Disease, Others
Must Be Taking:Gemcitabine, Nab-paclitaxel
20 Participants Needed
Resistant Maltodextrin for Parkinson's Disease
Chicago, Illinois
This trial will test if a special type of dietary fiber called resistant maltodextrin is safe and can help improve gut health and symptoms in people with Parkinson's disease. The fiber works by feeding good bacteria in the gut.
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Phase 2
Age:60+
Key Eligibility Criteria
Disqualifiers:Diabetes, Cognitive Impairment, Others
Must Be Taking:PD Medications
30 Participants Needed
Berries for Inflammation
Chicago, Illinois
The primary objectives are to characterize changes in indices of systemic and gut inflammation, assess host- and microbial-derived metabolite pools, and describe and link functional metagenomics and metatranscriptomic alterations in the gut microbiome with metabolite and inflammatory outcomes after acute (24hr) and chronic (4 week) intake of anthocyanins and ellagitannins from strawberry and red raspberries compared to a control diet (negative control), FOS (positive control, non-polyphenol, carbohydrate-based fermentable fiber/pre-biotic), or combination diet (berry composite + FOS) in human participants with low-grade inflammation.
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:20 - 60
Key Eligibility Criteria
Disqualifiers:Smoking, Cardiovascular Disease, Diabetes, Cancer, Others
Must Not Be Taking:Lipid-lowering, Anti-inflammatory, Probiotics, Others
105 Participants Needed
Mango Consumption for Obesity
Chicago, Illinois
The primary objective of this project is to provide new knowledge through a comprehensive set of analyses that investigate the complex interplay between regular mango intake, gut microbial structure/ function, mechanisms of inflammation and insulin sensitivity in over weight (OW)/obese (OB) human subjects with chronic low-grade inflammation.
Trial Details
Trial Status:Active Not Recruiting
Age:20 - 60
Key Eligibility Criteria
Disqualifiers:Not Listed
60 Participants Needed
Prebiotics for Gut Health
Chicago, Illinois
According to International Scientific Association for Probiotics and Prebiotics (ISAPP), a prebiotic is defined as a substrate that is selectively utilized by host microorganisms conferring a health benefit (Gibson et al, 2017). Fibers/ Prebiotics are known to have several beneficial effects on human health via gut. They remain mostly undigested in upper GI and reach colon where they are fermented by resident gut microbiota. This leads to the production of several beneficial metabolites such as short chain fatty acids and others which are implied in human health. The aim of this study is to examine the effects of combinations of two prebiotics on gut microbiota modulation and Quality of Life at two doses.
Trial Details
Trial Status:Not Yet Recruiting
Trial Phase:Unphased
Age:18 - 60
Key Eligibility Criteria
Disqualifiers:Pregnancy, Drug Abuse, Immunocompromised, Others
Must Not Be Taking:Anxiolytics, Antipsychotics, Opioids, Others
80 Participants Needed
Perinatal depression and anxiety (PDA) are the leading causes of maternal mortality in developed countries. Women with a history of depression have a 20 fold higher risk of PDA at subsequent pregnancies. The adverse outcomes extend beyond maternal well-being to long-term deficits in children and families. The gut-brain axis is a newly recognized key player in mental health disorders. Specifically, the microbial composition of the gut along with their metabolites are directly involved in disease onset and course. Recent clinical studies have identified diet as the most powerful environmental factor in manipulating gut microbiome. Given vulnerability and resistance of pregnant women to pharmacotherapy, particularly in those with a predisposition to mood disorders, as well as pregnant women's high motivation and commitment to improving gestational diet, a dietary/supplemental intervention to 'optimize' gut microbiome, is a favored approach in disease management. The study investigators aim to exploit microbial responsiveness to diet together with this maternal motivation, to alter the risk and severity of a universal public health concern that has dire and long-term consequences for new moms and their children.
The investigators of this trial, will first study the challenges in pursuing a study aimed at changing the microbiome of pregnant women with a history of mood disorders. Pregnant women in their second trimester will be recruited. Each will be assigned or randomized to one of four groups that will use a combination of diet, supplementation with probiotics, fish oil or no intervention. Each participant will meet with the study team virtually every 3 months until 1 year after delivery. At each study visit participants will be required to complete some questionnaires about their food intake, mood, and other health related measures and will provide a stool sample using the stool collection kits provided.
The findings from this study will help strategize for a larger study that will allow for comparison of the effects of diet, and/or supplementation with Omega-3 Fatty Acids (O3FA) and probiotics on the microbiome and the onset and severity of PDA.
No Placebo Group
Pivotal Trial (Near Approval)
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 2, 3
Age:18 - 43
Sex:Female
Key Eligibility Criteria
Disqualifiers:Bipolar, Psychosis, Schizophrenia, Others
100 Participants Needed
Aerobic Exercise for Gut Health
Washington, District of Columbia
This study aims to elucidate the differences in the gut microbiome functional activity and metabolome in adult premenopausal women with distinctive fitness levels and BMIs (with obesity, w/o obesity). The specific aims are as follows:
* Aim 1: To examine the effects of acute aerobic exercise at 60-70% heart rate reserve (HRRmax) for 30 minutes bout on changes in the abundance of SCFA-producing bacteria and their functional downstream metabolic activity.
* Aim 2: To examine the effects of acute aerobic exercise at 60-70% HRRmax 30-minute bout on changes in GM-released SCFA concentrations in stool and plasmatic metabolome.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:21 - 40
Sex:Female
Key Eligibility Criteria
Disqualifiers:Male, Pregnancy, Gastrointestinal, Endocrine, Others
Must Not Be Taking:Herbal, Fiber, Prebiotics, Antibiotics
40 Participants Needed
Apple Polyphenol Diet for Gut Health
College Park, Maryland
The goal of this controlled feeding trial is to learn about the metabolism of polyphenols, a common class of compounds found in plant-based foods, by the gut microbiome. It will evaluate how differences in gut bacteria across individuals influence metabolism of polyphenols from foods, which may influence health benefits that people receive from different foods.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 45
Key Eligibility Criteria
Disqualifiers:Pregnancy, Food Allergies, Renal, Others
Must Not Be Taking:Antacids, Antibiotics
30 Participants Needed
Blueberries + Exercise for Cognitive Impairment
Kannapolis, North Carolina
This NIH project will examine the effects of routine flavonoid-rich blueberry intake (12-weeks), combined with or in the absence of regular moderate exercise, on cognitive function in a clinical population of older participants identified as experiencing age-related cognitive changes. This project's hypothesis is that the combination of flavonoid-rich diet and routine physical activity may potentiate cognitive benefits and reduce cognitive decline in an aging population, via mechanisms mediated by the gut microbiome.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:65 - 85
Key Eligibility Criteria
Disqualifiers:Diabetes, Uncontrolled Cardiovascular, Dementia, Others
Must Not Be Taking:Cognition Drugs
240 Participants Needed
Microbiome Analysis for Rosacea
Baltimore, Maryland
This trial examines how different antimicrobial treatments affect the skin and gut bacteria in people with moderate to severe rosacea. It aims to see if these treatments can help by changing the bacteria that live on the skin and in the gut.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Early Phase 1
Key Eligibility Criteria
Disqualifiers:Chronic Gastrointestinal Disease, Diabetes, Cardiac Disease, Immunodeficiency, Others
Must Not Be Taking:Antibiotics, Steroids, NSAIDs, Antacids
150 Participants Needed
Prebiotics for PTSD and Liver Cirrhosis
Richmond, Virginia
Despite medical advancements, PTSD remains a major issue in Veterans1. Current treatment strategies have relatively poor adherence. In patients with PTSD and cirrhosis, there is greater cognitive impairment as well as changes in gut microbiome structure and function2,3. In addition, when there is concomitant cirrhosis, medication-related treatment options become even narrower from a safety and tolerability perspective and cognitive issues pertaining to cirrhosis could impact participation3. Changes in gut microbiome in Veterans with cirrhosis and PTSD compared to those with cirrhosis without PTSD is characterized by a greater relative expression of pathobionts and reduction in stool microbiome diversity with reduction in bacteria that produce beneficial short chain fatty acids (SCFA)2. Modulation of the gut microbiome in patients with cirrhosis and PTSD may be an important therapeutic target. In prior studies with cirrhosis alone, microbial modulation using diet, antibiotics such as rifaximin, probiotics, and fecal microbiota transplant have improved gut microbial diversity and clinical outcomes in some cases4,5. In patients with cirrhosis without PTSD and in patients with PTSD without cirrhosis there is emerging evidence regarding prebiotics and other forms of gut microbial modulation.
Prebiotics are such an example6. Prebiotics are natural fibers derived from carbohydrates and can be beneficial to gut microbiota (good bacteria in the gut)6. Resistant starches (RS) are dietary fiber prebiotics found naturally in many foods including potatoes, plantains, and legumes6,7. In addition to being highly accessible, RS have been shown to be well tolerated with few adverse reactions. While no studies of RS exist in PTSD + cirrhosis patients, a meta-analysis of RS in IBD has shown RS to be an effective treatment in both animal and clinical studies where improvements in clinical remission and reduced mucosal damage were found7. However, there is insufficient data regarding patients with PTSD and cirrhosis regarding gut microbial structure and function modulation with dietary supplements such as resistant starches. These starches can improve SCFA production in elderly subjects, which could in turn affect the gut-brain axis favorably8.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Alcohol Abuse, Drug Use, Pregnancy, Others
Must Not Be Taking:Prebiotics, Probiotics, Antibiotics, Others
30 Participants Needed
Food Powder for Metabolism
Durham, North Carolina
This pilot study investigates the digestion rate of naturally occurring food DNA through the human digestive tract by detecting residual food DNA in stool samples. The investigators hypothesize that food DNA primarily transits through the digestive system within 24 hours, with maximal detection in stool samples collected the day after ingestion. Previous research has focused on food DNA digestion in human gastric juices, leaving digestion through the entire gut largely unexplored. This study employs a fixed-order within subjects design involving healthy participants. Each participant will submit a baseline stool sample, consume a single dose of a study-specific powdered food (reconstituted in water) differing from their usual diet, and provide the subsequent five stool samples. If five samples are collected in fewer than five days, an additional sample will be obtained on the fifth day post-consumption. The presence and decline of food specific DNA in these samples will be quantified using qPCR, enabling us to determine the digestion rate of food DNA. The study design poses with minimal risk as it non-invasively monitors the natural process of food DNA digestion and transit through stool sample analysis.
No Placebo Group
Trial Details
Trial Status:Not Yet Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Irritable Bowel, Inflammatory Bowel, Diabetes, Others
20 Participants Needed
Postbiotic for Exercise Performance
Saint Charles, Missouri
This is a prospective, randomized, placebo controlled, double-blind study to assess the effects of a postbiotic blend on exercise induced oxidative stress markers and exercise performance in healthy adult.
Trial Details
Trial Status:Not Yet Recruiting
Trial Phase:Unphased
Age:18 - 45
Key Eligibility Criteria
Disqualifiers:Diabetes, Heart Disease, Cancer, Others
Must Not Be Taking:Antibiotics, Probiotics, Statins, Hypertension
80 Participants Needed
Probiotics for Gut Microbiome Imbalance
Philadelphia, Pennsylvania
This study aims to evaluate whether probiotics can help maintain a healthy gut microbiome in patients receiving prophylactic antibiotics during elective orthopedic surgery. Antibiotics, while effective in preventing infections, can disrupt the balance of gut bacteria, leading to dysbiosis. The study hypothesizes that the use of probiotics during the perioperative period can prevent or reduce this disruption, supporting gut health and overall well-being. The research seeks to answer whether combining probiotics with routine antibiotic prophylaxis can preserve gut microbiome balance and improve patient outcomes.
Trial Details
Trial Status:Not Yet Recruiting
Trial Phase:Phase 4
Age:18 - 65
Key Eligibility Criteria
Disqualifiers:Autoimmune, Chronic Intestinal, Others
Must Be Taking:Antibiotics
60 Participants Needed
Rosuvastatin and Gut Microbiome in Healthy Subjects
Philadelphia, Pennsylvania
There is evidence that the bacteria that naturally reside in the gut can influence how well we respond to medications. Therefore this study will look at how rosuvastatin, a medication used to lower cholesterol levels, may change the bacteria in the gut. Investigators will also examine how the gut bacteria will affect the ability of rosuvastatin to lower cholesterol levels. There will be 4 study visits over the course of about 16 weeks.The expected duration of the study is 2 years. Investigators plan to enroll 100 healthy volunteers during that time.
Trial Details
Trial Status:Active Not Recruiting
Trial Phase:Phase 4
Age:18 - 65
Key Eligibility Criteria
Disqualifiers:Cardiovascular Disease, Cancer, Diabetes, Others
Must Not Be Taking:Antihypertensives, Antibiotics, Probiotics, Others
62 Participants Needed
Wild Blueberries for High Blood Pressure
Atlanta, Georgia
The purpose of the study is to determine the effectiveness of wild blueberries on cardiovascular health, cognitive function, and gut microbiota composition in non-Hispanic Black and White adults with elevated blood pressure.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:45 - 65
Key Eligibility Criteria
Disqualifiers:Cancer, Cardiovascular, Neurological, Others
Must Not Be Taking:Insulin, Antibiotics, Anti-inflammatories, Others
80 Participants Needed
Peanuts for Prediabetes
Atlanta, Georgia
The overall objective of this 13-month randomized crossover study is to seek evidence demonstrating that daily consumption of peanuts and peanut products improve cardiometabolic, cognitive, and intestinal health in a racially diverse prediabetes population.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:20 - 59
Key Eligibility Criteria
Disqualifiers:Cancer, Renal, Cardiovascular, Others
Must Not Be Taking:Insulin, Antidiabetics, Antibiotics, Anti-inflammatories
72 Participants Needed
Why Other Patients Applied
"I've tried several different SSRIs over the past 23 years with no luck. Some of these new treatments seem interesting... haven't tried anything like them before. I really hope that one could work."
ZS
Depression PatientAge: 51
"As a healthy volunteer, I like to participate in as many trials as I'm able to. It's a good way to help research and earn money."
IZ
Healthy Volunteer PatientAge: 38
"I was diagnosed with stage 4 pancreatic cancer three months ago, metastatic to my liver, and I have been receiving and responding well to chemotherapy. My blood work revealed that my tumor markers have gone from 2600 in the beginning to 173 as of now, even with the delay in treatment, they are not going up. CT Scans reveal they have been shrinking as well. However, chemo is seriously deteriorating my body. I have 4 more treatments to go in this 12 treatment cycle. I am just interested in learning about my other options, if any are available to me."
ID
Pancreatic Cancer PatientAge: 40
"My orthopedist recommended a half replacement of my right knee. I have had both hips replaced. Currently have arthritis in knee, shoulder, and thumb. I want to avoid surgery, and I'm open-minded about trying a trial before using surgery as a last resort."
HZ
Arthritis PatientAge: 78
"I changed my diet in 2020 and I’ve lost 95 pounds from my highest weight (283). I am 5’3”, female, and now 188. I still have a 33 BMI. I've been doing research on alternative approaches to continue my progress, which brought me here to consider clinical trials."
WR
Obesity PatientAge: 58
Blueberries for Prediabetes
Atlanta, Georgia
The goal of this clinical trial is to determine the effectiveness of using a freeze-dried wild blueberry powder on cardiometabolic health, cognitive function, and gut microbiota composition in adult women with prediabetes.
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:45 - 65
Sex:Female
Key Eligibility Criteria
Disqualifiers:Allergies To Berries, Cancer, Hypertension, Smoking, Others
Must Not Be Taking:Insulin, Antidiabetics, Antibiotics, Anti-inflammatories
30 Participants Needed
L-Phenylalanine for Gut Health
New York, New York
The purpose of this study is to explore how the dietary supplement L-Phenylalanine affects the production of the metabolite phenylpropionic acid (PPA) and changes fungal populations of the gut microbiome.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Early Phase 1
Key Eligibility Criteria
Disqualifiers:Gastrointestinal Conditions, Pregnancy, Others
Must Not Be Taking:Antibiotics, Antifungals, MOAI, Others
20 Participants Needed
Whole Food Plant-Based Smoothie for Knee Replacement
New York City, New York
This study aims to assess the feasibility of a 2-week dietary whole-food smoothie intervention and compare outcomes between two groups: patients that integrated a daily whole food plant-based smoothie into their diet for two weeks prior to surgery, and a control group of revision TKA patients that made no nutritional changes to their diet prior to surgery. The main research questions are:
1. Among patients planned for elective TKA revision surgery, what is the feasibility of a 2-week dietary intervention implemented 2 weeks prior to surgery? \[Outcomes will be compliance, noted barriers and/or facilitators, satisfaction with diet\]
2. Determine if the implementation of a daily whole food plant- based smoothie dietary supplement 2 weeks prior to TKA revision surgery will reduce inflammation -measured in plasma levels of IL-6 and CRP- at POD0, POD1, POD2, POD3, and 6 Weeks Post-operative as compared to 1) baseline (prior to dietary intervention initiation) and 2) control patients who did not make changes in their diet prior to surgery.
3. Determine if the implementation of a daily whole food plant-based smoothie dietary supplement 2 weeks prior to TKA revision surgery will result in quantifiable changes in the gut microbiome composition -measured via fecal samples- as compared to control patients who did not make changes in their diet prior to surgery.
4. Determine if the implementation of a daily whole food plant- based smoothie dietary supplement 2 weeks prior to TKA revision surgery will result in improved immediate postoperative pain -measured through numeric rating scale (NRS) pain scores- and opioid use -measured in morphine milligram equivalents (MME)- as compared to control patients.
5. Compare patient satisfaction and adoption of nutritional behavioral changes in patients implementing a whole food plant-based smoothie 2 weeks prior to TKA revision surgery to patients undergoing the same surgery but did not me pre-surgery dietary changes.
The researcher's primary outcome is measuring feasibility and patient compliance with smoothie consumption. Secondarily, the investigators are interested in measuring if the preoperative smoothie can alter the gut microbiome and decrease systemic inflammation, leading to lowered post-operative pain and opioid use.
No Placebo Group
Trial Details
Trial Status:Not Yet Recruiting
Trial Phase:Unphased
Age:40 - 80
Key Eligibility Criteria
Disqualifiers:Age, Weight, Diet, IBD, Others
Must Not Be Taking:GLP-1 Agonists, Statins
24 Participants Needed
Nutritional Optimization for Heart Failure
New York, New York
The goal of this clinical trial is to assess whether a peri-operative intervention with nutritional immune modulating intervention (Ensure Surgery Immunonutrition shake) has beneficial effects on the complex interplay between gut microbiome, systemic inflammation and malnutrition that is commonly present in advanced heart failure and the adverse events associated with left ventricular assist device (LVAD) placement in hospitalized advanced heart failure patients awaiting LVAD implantation. The main questions it aims to answer are:
* Will pre-surgical supplementation with Ensure Surgery affect gut microbial composition and levels of inflammation among heart failure patients undergoing LVAD implantation?
* Will pre-surgical supplementation with Ensure Surgery affect post-surgical morbidity (e.g., infections, intensive care unit length of stay (LOS)) and mortality? Participants will be evaluated for malnutrition and will be given Ensure Surgery Immunonutrition shake to drink in the days preceding their LVAD surgery. Blood and stool samples will be collected at prespecified timepoints before and after surgery.
Researchers will compare malnourished participants drinking Ensure Surgery 3/day with well-nourished participants randomized to drink either 1/day or 3/day to see if any of the above supplementation strategies change the gut microbial composition, levels of inflammation, and post-surgical morbidity and mortality.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Intubated, Congenital Heart Disease, Others
50 Participants Needed
Vancomycin for Multiple Sclerosis
New York, New York
This trial is testing vancomycin, an antibiotic, to see if it can change gut bacteria and help reduce brain inflammation in people with multiple sclerosis (MS). The goal is to understand if altering gut bacteria can improve immune function and lessen MS symptoms.
Trial Details
Trial Status:Recruiting
Trial Phase:Phase 1
Age:18 - 50
Key Eligibility Criteria
Disqualifiers:Pregnancy, Diabetes, HIV, Others
Must Not Be Taking:Antibiotics, Corticosteroids, Immunosuppressants, Others
12 Participants Needed
Aerobic Exercise for Breast Cancer Survivors
Birmingham, Alabama
This trial studies how exercise and a specific diet can change gut bacteria in breast cancer survivors to help reduce tiredness and improve health.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Sex:Female
Key Eligibility Criteria
Disqualifiers:Metastatic Cancer, Unstable Angina, Schizophrenia, Others
Must Not Be Taking:Steroids, Antibiotics
126 Participants Needed
Gastric Bypass Surgery for Obesity
Columbia, Missouri
Variable outcomes after weight loss surgery are likely attributable to complex, poorly understood mechanisms. Due to the significant impact that morbid obesity has on a patient's health, successful management of obesity and its related comorbid medical conditions is important and thus necessitates continued improved therapies for treating obesity. Although the mechanisms of weight loss after surgical intervention are poorly understood, improved understanding of molecular and metabolic changes that occur after weight loss surgery may offer the ability to provide targeted precision therapy for patients with morbid obesity undergoing surgical therapy. In this proposal, the investigators will combine a clinical trial whereby modifications to the gold-standard for weight loss surgery, the gastric bypass, are evaluated while simultaneously measuring molecular and metabolic changes that occur in response to these weight loss procedures. Through creating variable lengths of bypass intestine after gastric bypass, the investigators will be able to determine the effect of malabsorption on clinical outcomes and mechanisms involved in weight loss after gastric bypass. The investigators will also use two control groups. One will be a surgical weight loss control group and consist of patients undergoing a laparoscopic sleeve gastrectomy, a non-intestinal bypass procedure. The other group will consist of patients having non-surgical weight loss therapy. To asses metabolic changes that occur in response to surgical weight therapy and specifically intestinal bypass and malabsorption, the investigators will examine changes in the gut microbiome and plasma gut enteroendocrine hormones. To evaluate molecular pathways that are impacted as a result of gastric bypass and malabsorption, the investigators will measure circulating microRNAs (miRNAs) in the blood. Measurement of miRNAs will provide data on an easily measurable molecular marker for each treatment group. This is a first step in translational exploration of mechanisms of weight loss after surgery by evaluating both clinical and molecular/metabolic outcomes and begin an explorative process towards creating an individualized approach to improving outcomes after weight loss surgery.
No Placebo Group
Trial Details
Trial Status:Enrolling By Invitation
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Age Less Than 18, Others
750 Participants Needed
Low Sugar Protein Pacing + Intermittent Fasting for Weight Loss
Saratoga Springs, New York
This study will systematically quantify the effects of protein pacing and intermittent fasting (P-IF) on total and regional (abdominal) body composition (lean mass and fat mass), blood glucose and lipids, and anti-aging biomarkers, hunger ratings, and the gut microbiome in 40 overweight/obese adult men (n=20) and women (n=20) following a 8-week weight loss intervention. Participants will be enrolled in the study as a single cohort and participate in a 8-week weight loss (WL) trial consisting of a single dietary intervention phase. The purpose of the additional 12 month follow up case study (in addition to the initial 12-month case study period) is to scientifically document a significant weight loss and improved body composition following combined protein pacing intermittent fasting nutrition and a safe, effective exercise program in a study participant who achieved successful weight loss maintenance during the previous 12 month follow up study period.
No Placebo Group
Trial Details
Trial Status:Active Not Recruiting
Age:25 - 65
Key Eligibility Criteria
Disqualifiers:Not Listed
40 Participants Needed
Fermented Foods for Post-COVID Syndrome
Rochester, Minnesota
The purpose of this study is to evaluate the effects of fermented foods on bacterial gut microbiome diversity of long-COVID subjects.
No Placebo Group
Trial Details
Trial Status:Enrolling By Invitation
Trial Phase:Unphased
Key Eligibility Criteria
Disqualifiers:Dementia, Immunosuppressed, Chemotherapy, Pregnancy, Others
Must Not Be Taking:MAOIs
40 Participants Needed
Probiotic Supplementation for Infants of Diabetic Mothers
Minneapolis, Minnesota
The purpose of this study is to test the hypothesis that maternal probiotic supplementation is associated with infant gut microbiome variation and improved neurodevelopmental outcomes as measured by ERP performance in infants of diabetic mothers (IDMs), a cohort that is at-risk for recognition memory abnormalities.
No Placebo Group
Trial Details
Trial Status:Recruiting
Trial Phase:Unphased
Age:21 - 45
Sex:Female
Key Eligibility Criteria
Disqualifiers:Alcohol, Tobacco, Type I Diabetes, Others
Must Not Be Taking:Probiotics
60 Participants Needed
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We started Power when my dad was diagnosed with multiple myeloma, and I struggled to help him access the latest immunotherapy. Hopefully Power makes it simpler for you to explore promising new treatments, during what is probably a difficult time.
Bask GillCEO at Power
Frequently Asked Questions
How much do Gut Microbiome clinical trials pay?
Each trial will compensate patients a different amount, but $50-100 for each visit is a fairly common range for Phase 2–4 trials (Phase 1 trials often pay substantially more). Further, most trials will cover the costs of a travel to-and-from the clinic.
How do Gut Microbiome clinical trials work?
After a researcher reviews your profile, they may choose to invite you in to a screening appointment, where they'll determine if you meet 100% of the eligibility requirements. If you do, you'll be sorted into one of the treatment groups, and receive your study drug. For some trials, there is a chance you'll receive a placebo. Across Gut Microbiome trials 30% of clinical trials have a placebo. Typically, you'll be required to check-in with the clinic every month or so. The average trial length for Gut Microbiome is 12 months.
How do I participate in a study as a "healthy volunteer"?
Not all studies recruit healthy volunteers: usually, Phase 1 studies do. Participating as a healthy volunteer means you will go to a research facility several times over a few days or weeks to receive a dose of either the test treatment or a "placebo," which is a harmless substance that helps researchers compare results. You will have routine tests during these visits, and you'll be compensated for your time and travel, with the number of appointments and details varying by study.
What does the "phase" of a clinical trial mean?
The phase of a trial reveals what stage the drug is in to get approval for a specific condition. Phase 1 trials are the trials to collect safety data in humans. Phase 2 trials are those where the drug has some data showing safety in humans, but where further human data is needed on drug effectiveness. Phase 3 trials are in the final step before approval. The drug already has data showing both safety and effectiveness. As a general rule, Phase 3 trials are more promising than Phase 2, and Phase 2 trials are more promising than phase 1.
Do I need to be insured to participate in a Gut Microbiome medical study?
Clinical trials are almost always free to participants, and so do not require insurance. The only exception here are trials focused on cancer, because only a small part of the typical treatment plan is actually experimental. For these cancer trials, participants typically need insurance to cover all the non-experimental components.
What are the newest Gut Microbiome clinical trials?
Most recently, we added Kefir for Type 2 Diabetes, Food Powder for Metabolism and Whole Food Plant-Based Smoothie for Knee Replacement to the Power online platform.
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