Microbiome

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177 Microbiome Trials Near You

Power is an online platform that helps thousands of 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.

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No Placebo
Highly Paid
Stay on Current Meds
Pivotal Trials (Near Approval)
Breakthrough Medication
This is a new, commercially available, over-the-counter fiber supplement that combines 8 fibers. The varied nature of the fibers in this product is designed to create a more diverse microbiome (bacteria that live within the human GI tract). In general, the more diverse the microbiome the less inflammatory the gut. The purpose of this study is to evaluate the effects of a new fiber product on bloating, gas, and bowel movements.
No Placebo Group

Trial Details

Trial Status:Not Yet Recruiting
Trial Phase:Unphased

100 Participants Needed

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

60 Participants Needed

The PREDICT 3 study will build on previous research in over 2,000 individuals to further refine machine learning models that predict individual responses to foods, with the aim of advancing precision nutrition science and individualized dietary advice. The study incorporates both standardized and controlled dietary intervention, for the purpose of testing postprandial responses to specific mixed meals, in addition to a free-living period with a dietary record for measuring responses to a large variety of meals consumed in a realistic context, where the role of external factors (e.g. exercise, sleep, time of day) on postprandial responses may be determined. For the first time this PREDICT study is built on top of a commercial product which will allow access to a much larger group of participants who are already collecting large amounts of data through digital and biochemical devices that can contribute to science.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased

250000 Participants Needed

Synbiotic Treatment for Osteoporosis

Roslindale, Massachusetts
This randomized, double blind, placebo controlled clinical trial will test the efficacy of a probiotic/prebiotic combination ("synbiotic") on the skeleton in older women.

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:60+
Sex:Female

220 Participants Needed

Coffee for Colorectal Cancer

Boston, Massachusetts
This is research study is assessing the effects of 6-g daily use of freeze-dried instant coffee on liver fat and fibrosis and the gut microbiome and metabolome in patients who have completed routine treatment (including surgery, chemotherapy and radiotherapy) for stage I-III colorectal cancer.

Trial Details

Trial Status:Recruiting
Trial Phase:Phase 1, 2

80 Participants Needed

This trial is testing whether giving healthy gut bacteria from a donor to patients with advanced liver disease can help improve their brain function. The treatment involves using stool from healthy people to replace unhealthy bacteria in the patients' guts. The goal is to see if this can help reduce confusion caused by hepatic encephalopathy.

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Phase 2

30 Participants Needed

Dairy Products for Heart Health

Boston, Massachusetts
The purpose of the study is to compare the effect of consuming full-fat (regular) and fat-free (skim) milk, as well as full-fat and fat-free yogurt (a fermented dairy product), on microorganisms in your gut as well as the products produced by the gut microbes. We will also determine whether consuming these dairy products affects risk factors for heart disease.The findings of the study will help us determine if heart disease risk factors are modified by the fat content and fermentation of milk. The results may facilitate refinement of public health dietary guidance for cardiovascular disease risk reduction.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:50+

20 Participants Needed

Muscle health declines during aging. One factor that may impact muscle health is the community of bacteria that live in our intestines, but studies aimed at improving muscle health by targeting the gut in older adults are sparse. The primary goal of this study is to use a diet that is enriched in soluble fiber, which is exclusively utilized by gut bacteria to make substances that can impact muscle health, to improve muscle-related measures in older adults.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:65+

24 Participants Needed

The goal of this is parallel arm, randomized clinical trial is to learn and understand the effect of daily smooth peanut butter consumption on gut and metabolic health of children age 6-13. The main objectives are: Primary Objective: To determine the prebiotic effect of daily smooth peanut butter consumption for eight weeks on gut health, including microbiome-metabolome arrays, gut epithelial/barrier function, and gut transit time, in school-aged children. Secondary Objective(s) 1. To determine the effect of daily smooth peanut butter consumption for eight weeks on metabolic and inflammatory health markers, and measures of sleep quality in school-aged children. 2. To determine the potential mechanisms and feasibility of incorporating peanut butter into the diets of school-aged children as part of healthy, personalized nutrition. Research Intervention(s): Researchers compare two groups to see if there really is an effect of daily smooth peanut butter intake on gut and metabolic health. The two groups are: 1. The 1st condition (PB) includes a normal diet supplemented daily with personalized portion of smooth PB, sandwiched between two plain unsalted saltine crackers. 2. The 2nd condition (CTL) includes a normal diet supplemented daily with an isocaloric amount of a nut-free, vegetable oil-based chocolate spread, sandwiched between two plain unsalted saltine crackers.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:6 - 13

60 Participants Needed

The primary goal of this research is to evaluate the effect of daily whole-cooked chickpea and lentil consumption for 8-weeks on gut health, including microbiome-metabolome arrays and gut epithelial/barrier function, in healthy young adults. Secondary Objectives include: * To examine the effect of daily whole-cooked chickpea and lentil consumption for 8-weeks on the measures of metabolic health and inflammation in healthy young adults. * To determine the feasibility of healthy young adults to successfully incorporate and sustain the recommended daily intake of pulses into their diets for eight consecutive weeks Research Interventions: Participants will be asked to consume a normal diet supplemented daily with either A) whole-cooked canned lentils, or B) whole-cooked canned chickpeas. The control condition will be instructed to consume a normal diet while restricting all pulse intake throughout the study.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 30

60 Participants Needed

Watermelon for Obesity

Tallahassee, Florida
The goal of this clinical trial is to evaluate the effect of daily fresh watermelon consumption for 6-weeks on gut health, including microbiome diversity, gut barrier and immune function in young adults with overweight and obesity. The main questions it aims to answer are: 1. Will consuming fresh watermelon daily for 6-weeks will improve intestinal barrier health and increase microbiome diversity such as an increased population of beneficial 'probiotic' bacteria when compared to control participants consuming a low-fat snack? 2. Will consuming fresh watermelon daily for six-weeks will improve other health measures, including body-composition, blood pressure, blood vessel function, blood lipid profiles, and measures of inflammation, as compared to control participants consuming a low-fat snack for the same time period?
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 30

36 Participants Needed

Butyric acid has been shown to promote gut health and improve the microbiome in multiple adult studies. In preliminary studies in older children with inflammatory bowel disease, butyric acid was shown to be safe. However, it's suitability for infants and young children with congenital heart disease (CHD) has yet to be determined. This study will examine butyric acid supplementation in infants and children, ages 1 month to 3 years, with CHD who require cardiac surgery with cardiopulmonary bypass. Study goals include determining the safety and tolerability of butyric acid supplementation before cardiac surgery, and to identify changes in gut microbial communities, metabolic profile, and genetic markers intestinal function. Also, the study seeks to establish a reduction in inflammation (inflammatory signaling) after cardiopulmonary bypass (CPB) in participants receiving butyric acid.

Trial Details

Trial Status:Not Yet Recruiting
Trial Phase:Phase 1, 2
Age:1 - 3

105 Participants Needed

Beans for Gut Microbiome

Lincoln, Nebraska
Beans are well known for their health benefits. Many of these benefits relate to gut health, as many of the nutrients found in beans support beneficial microbes that live in the gut. However, beans have a lot of genetic diversity. This diversity has led to different bean market classes with different colors, sizes, and nutrient profiles. Differences between bean market classes may trigger different effects on gut microbes and health, but this is poorly understood. The goal of the pilot clinical trial is to make comparisons (1) between two different bean market classes (pink beans, great northern beans) and (2) between a bean mixture (pinto, kidney, black, pink, and great northern beans) and individual bean market classes. The study will assess whether bean market classes differ in their effects on gut microbes, blood pressure, metabolism, and gut symptoms in adults with and without obesity.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:19 - 50

12 Participants Needed

The main goal of this project is to identify the microbiome components change in abundance in response to food ingested including provided foods.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:19+

65 Participants Needed

Increasing evidence suggest that artificial sweeteners such as saccharin, aspartame and sucralose may not be as metabolically safe as they first appeared, and it has been proposed that their consumption may be linked to important disturbances in the gut microbiome. Some in vitro and in vivo studies suggest that the recently approved sugar substitute Stevia (eg. steviol glycosides) can also influence intestinal homeostasis. However, it is not clear whether this natural non-nutritive sweetener (NNS) could also cause metabolic and microbiome disturbances as proposed for their synthetic counterparts. In fact, steviol glycosides may even have a beneficial impact on glucose homeostasis and lipid metabolism possibly through a positive action on intestinal health and gut microbiome, but this has yet to be experimentally tested in a rigorous study. The main objective of this project is to evaluate whether steviol glycosides sweetened beverages (SGSB) or aspartame/acesulfame K sweetened beverages (AASB) exert beneficial, neutral or detrimental effects on metabolic health of regular consumers of sugar-sweetened beverages (SSBs), and whether modulation of the gut microbiome is involved in the resulting impact of these NNSs on metabolic health. As chronic overconsumption of SSBs is clearly associated with an increased cardiometabolic risk, this study will be the first to determine the metabolic impact of replacing SSBs by potentially "healthier alternatives" such as the increasingly popular stevia-based soft drinks and aspartame-based soft drinks. The investigators will further investigate whether these NNS can cause pernicious effects on intestinal health and the gut microbiome. It is a crucial concern since the importance of this unsuspected key "organ" has been ignored for too long and its important implication in many chronic societal diseases has just been discovered. Results of this study could have a direct influence on health, nutrition and even agricultural policies as well as dietary guidelines around the world. This project is also critically important as an increasing amount of health professionals such as physicians, nurses and registered dietitians seek to provide evidenced-based guidance to individuals looking for healthier alternatives to SSBs including stevia-based or aspartame-based soft drinks.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Unphased

41 Participants Needed

There is growing evidence that nutritional intervention with dietary polyphenols can positively modulate the gut microbiota to improve cardiometabolic health. Whether the beneficial effects of raspberry on obesity and the metabolic syndrome can be linked to their potential impact on the gut microbiota and intestinal integrity remains speculative at this time. Moreover, the mechanisms of action underlying health benefits associated to raspberry consumption are still unknown. The investigators are thus proposing to combine the study of metagenomics, transcriptomics and metabolomics to test whether a prebiotic activity of raspberry can play a role in the prevention of obesity-linked metabolic syndrome in a clinical setting.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:18 - 60

59 Participants Needed

There is growing evidence that nutritional intervention with dietary polyphenols can positively modulate the gut microbiota to improve cardiometabolic health. Whether the beneficial effects of blueberries on obesity and the metabolic syndrome can be linked to their potential impact on the gut microbiota and intestinal integrity remains speculative at this time. Moreover, the mechanisms of action underlying health benefits associated to blueberry consumption are still unknown. The investigators are thus proposing to combine the study of metagenomics, transcriptomics and metabolomics to test whether a prebiotic activity of highbush blueberries can play a role in the prevention of obesity-linked metabolic syndrome in a clinical setting.

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:18 - 55

59 Participants Needed

The proposed project mainly aims to investigate the microbial processes leading to dietary metabolites production, independently of long-term microbiota adaptation to the diet, by measuring the microbiota-derived metabolite production from a meal sequence rich in saturated fatty acids (SFA) or the same meals but rich in polyunsaturated fatty acids (PUFA) in individuals with or without obesity and Type 2 diabetes (T2D)
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:45 - 65

60 Participants Needed

The goal of this clinical trial is to improve the treatment of hepatic steatosis associated with obesity with pharmacological and nutritionnal approaches. The main question it aims to answer is: Does an individualized nutritionnal approach with a dietician combined with medication targeting obesity is the most efficient way to treat hepatic steatosis associated with obesity? Participants will either participate in one of three groups: * Nutrition: Participant will only have a regular follow-up with a registered dietician; * Nutrition + Semaglutide: Participants will start a new medication targeting obesity and will have a regular follow-up with a registered dietician; * Semaglutide: Participants will start a new medication targeting obesity.
No Placebo Group

Trial Details

Trial Status:Not Yet Recruiting
Trial Phase:Unphased

120 Participants Needed

Egg Intake for Obesity

Quebec City, Quebec
The purpose of this research is to determine the effect of additional daily egg intake on metabolic phenotypes and metabolism in the context of obesity.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:30 - 65

20 Participants Needed

Why Other Patients Applied

"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

"I've been struggling with ADHD and anxiety since I was 9 years old. I'm currently 30. I really don't like how numb the medications make me feel. And especially now, that I've lost my grandma and my aunt 8 days apart, my anxiety has been even worse. So I'm trying to find something new."

FF
ADHD PatientAge: 31

"I have dealt with voice and vocal fold issues related to paralysis for over 12 years. This problem has negatively impacted virtually every facet of my life. I am an otherwise healthy 48 year old married father of 3 living. My youngest daughter is 12 and has never heard my real voice. I am now having breathing issues related to the paralysis as well as trouble swallowing some liquids. In my research I have seen some recent trials focused on helping people like me."

AG
Paralysis PatientAge: 50

"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

"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
The study investigators will recruit a generally healthy sample of 112 black and white adults from Birmingham, AL to participate in a 28-day randomized, controlled feeding study. Participants will be randomized to receive either the DASH diet or a standard American diet. All meals will be provided by the study. Fecal samples will be collected at multiple time points before, during, and after the dietary intervention and will be analyzed using PCR to amplify the V4 region of the 16S rRNA gene and to sequence bases using the MiSeq platform. Sequenced data will then be analyzed using QIIME. The investigators hypothesize that participants receiving the DASH diet will have a greater increase in alpha diversity and greater changes in abundances of CRC-associated microbes than participants receiving the standard American diet. The investigators will also evaluate functional-level markers including bile acid and short chain fatty acid (SCFA) production and inflammatory markers. If the investigator's hypothesis is supported, they expect to see reduced production of secondary bile acids (e.g., deoxycholic acid), greater SCFA production (e.g, butyrate), and reduction in gut and systemic inflammation (e.g, calprotectin, IL-6) among participants receiving the DASH diet compared to the standard American diet. The investigator's findings will provide preliminary evidence for the DASH diet as an approach for cultivating a healthier gut microbiota across racially diverse populations. These findings can impact clinical, translational, and population-level approaches for modification of the gut microbiota to reduce risk of chronic diseases like CRC.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:19 - 65

112 Participants Needed

Short bowel syndrome (SBS) is a rare but challenging condition in which patients have insufficient bowel length to meet fluid, electrolyte, and nutrient requirements without parenteral support. The purpose of this study is to determine how well dietary fiber is tolerated in patients with or without short bowel syndrome based on assessment of gastrointestinal symptoms, weight, and corresponding changes in microbiome composition and metabolomics.
No Placebo Group

Trial Details

Trial Status:Enrolling By Invitation
Trial Phase:Unphased
Age:4 - 17

60 Participants Needed

Exercise for Type 2 Diabetes

Fredericton, New Brunswick
The goal of this experimental trial is to learn about the changes in bacterial diversity in individuals with type 2 diabetes who perform endurance and strength training at different intensities. Participants with type 2 diabetes will be randomly assigned to 16 weeks of either moderate-intensity endurance and strength training or high-intensity endurance and strength training. Researchers will compare the moderate-intensity and high-intensity exercise groups for differences in glycemia and bacterial diversity.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:19 - 64

40 Participants Needed

The purpose of this randomized controlled trial is to understand how a cognitive-behavioral treatment (a form of psychological treatment) for depression changes the gut microbiome (micro-organisms that regulate the health of the gut), immune system, and the brain functioning in people living with HIV.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased

150 Participants Needed

This project uses a hybrid trial design to evaluate two biomedical interventions targeting the gut-brain axis. One intervention is portable Transcutaneous Vagus Nerve Stimulator, tVNS, that is hypothesized to stimulate the autonomic nervous system, resulting in decreased inflammation and improved cognition. The second intervention is a probiotic supplement intended to replace gut bacteria that are associated with dysbiosis in persons with HIV and alcohol consumption.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:35 - 70

80 Participants Needed

To learn if diet can enhance the microbes (such as bacteria and viruses) found in your gut and improve the body's immune response to the influenza (flu) vaccine.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Unphased

31 Participants Needed

The study is aimed to determine if changes to the oral microbiome occur after the use of a nitrate rich mouth rinse. Participants with be asked to use either a controlled (water) mouthrinse once daily for 2 weeks while maintaining normal oral hygiene practices, or use the nitrate rich mouthrinse once daily for 2 weeks. Primary Outcome measures: -changes in the composition of the oral microbiome Secondary Outcome measures * Blood Pressure * Salivary Nitric Oxide Levels

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased
Age:18 - 40

30 Participants Needed

The goal of this clinical trial is to learn if a microbiome analysis, education, and recommendation program can improve gut health, reduce future health risks, and empower parents in their children's health in infants aged 0-3 months delivered via Cesarean section. The main questions it aims to answer are: Will the intervention increase bacteria considered beneficial, decrease the C- section microbiome signatures, promote a reduction in opportunistic pathogens, and improved functional potential for HMO digestion and SCFA production Will the intervention decrease microbiome signatures associated with atopic march conditions. Researchers will compare participants in the intervention arm, who will receive microbiome reports, personalized action plans, and educational materials, to participants in the control arm, who will receive microbiome results and educational materials after the study's completion, to see if the intervention leads to improved gut health and reduced risk of health conditions. Participants will: * Provide two microbiome stool samples three months apart. * Receive detailed infant gut health reports via the Tiny Health app. * Receive personalized action plans tailored to their infant's gut health needs. * Engage in gut health coaching sessions with a microbiome expert. * Receive an educational email series on infant gut health. * Complete a series of surveys/questionnaires on health history, symptoms, and diet. This study seeks to demonstrate that targeted microbiome interventions can significantly improve early infant gut health, leading to potential long-term health benefits. These benefits may include reduced healthcare costs by lowering the incidence of related chronic conditions. By establishing a foundation for mitigating these conditions, the intervention could consequently result in fewer doctor visits, reduced need for medications, and a lower incidence of hospitalizations over the first 3-4 years of the infant's life.
No Placebo Group

Trial Details

Trial Status:Active Not Recruiting
Trial Phase:Unphased
Age:0 - 3

100 Participants Needed

To test how two weeks of curcumin supplementation would cross the blood brain barrier (BBB) and attach to amyloid beta proteins, to assess the feasibility (safety and bioavailability), and to explore the resulting abundance/composition of gut microbiota.
No Placebo Group

Trial Details

Trial Status:Recruiting
Age:40 - 89

60 Participants Needed

The purpose of this study is to evaluate the ability of a wearable Smart Underwear prototype device to quantify diet-induced changes in gut microbial hydrogen sulfide (H₂S) production. The core design is a single-site, 2-period, crossover feeding study with 6-day diet periods and an approximately 11-day washout period. Participants are fed each of two isocaloric diets designed to contrast gut microbial H₂S production (i.e., a high cysteine vs. low cysteine diet), in a random order.
No Placebo Group

Trial Details

Trial Status:Recruiting
Trial Phase:Unphased

25 Participants Needed

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Why We Started Power

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.

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Bask GillCEO at Power
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Frequently Asked Questions

How much do 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 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 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 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 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 Microbiome clinical trials?

Most recently, we added Probiotics for Gestational Diabetes, Ketone Ester for Microbiome Health and Iron Supplements for Iron Deficiency to the Power online platform.

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