News Release

2025 Gut Microbiota for Health World Summit to spotlight groundbreaking research

Summit to showcase the latest microbiome research on coronavirus, plant and dairy-based protein, as well as probiotics

Meeting Announcement

American Gastroenterological Association

Bethesda, MD (March 12, 2025) — The 13th Gut Microbiota for Health World Summit, taking place March 15-16 in Washington, D.C., will reveal how cutting-edge research on gut microbiome science is being applied to clinical practice. The event – organized by the American Gastroenterological Association (AGA) and the European Society of Neurogastroenterology and Motility (ESNM) – will bring together clinicians, researchers, nutritionists, and dietitians from around the world. 

For media access to meeting abstracts or session recordings, email media@gastro.org.  

Top studies being presented: 

COVID-19 impacts gut bacteria in children 

Study title: Persistent gut microbiome dysbiosis and elevated fecal biomarkers in children PostSARS CoV-2 infection experiencing prolonged gastrointestinal and neuropsychiatric symptoms 

A novel study found that the gut microbiome in children is altered post-COVID-19 infection, much like it is in adults. Researchers found a significant decrease in beneficial bacteria, like Lacticaseibacillus and Bifidobacterium, in children who had COVID-19 compared to those who didn’t. These bacteria help reduce inflammation and support gut health. Children with lingering symptoms also showed different types of bacteria, in addition to elevated markers of inflammation and decreased barrier function in the gut. Future research will examine immune responses and potential microbiome-targeted therapies for persistent post-COVID-19 symptoms.   

Dietary protein may support gut health  

Study title: A novel role for S100B in diet and gut-microbiota regulation 

Researchers analyzed 35 plant-based and 23 dairy-based foods and found that nearly 50% of tested plants and milk and dairy products contain S100B, a helpful protein that binds calcium. The study suggested that S100B may interact with gut bacteria to promote a healthy microbiome, potentially influencing inflammatory bowel disease (IBD). The findings open the door for future dietary applications, such as using S100B in supplements and nutraceuticals.  

Probiotics reduce post-colonoscopy discomfort 

Study title: Efficacy of probiotics in reducing post-colonoscopy gastrointestinal symptoms: a meta-analysis of randomized controlled trials 

A meta-analysis of 10 studies, including 2,345 patients, showed that probiotics significantly reduced abdominal pain, bloating, and vomiting after a colonoscopy. While there was no significant reduction in nausea, constipation, gas, or diarrhea, these findings suggest probiotics could improve patient recovery and encourage more individuals to undergo the crucial procedure. 

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Media contacts:  

Annie Mehl, media@gastro.org 

About the AGA Institute  
The American Gastroenterological Association is the trusted voice of the GI community. Founded in 1897, AGA has grown to more than 16,000 members from around the globe who are involved in all aspects of the science, practice, and advancement of gastroenterology. The AGA Institute administers the organization's practice, research, and educational programs. www.gastro.org.    

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