The Barcelona Debates on the Human Microbiome

25 26 June 2026

We are pleased to announce that the 13th edition of The Barcelona Debates on the Human Microbiome will be held on June 10–11, 2027.

Over the years, it has established itself as a leading global forum in microbiome research, offering participants the chance to engage with the latest breakthroughs and shape the field’s future.

Each year, the Scientific Committee reviews key advances and trends to create a cutting-edge program in microbiome science, fostering collaboration and new insights among researchers and clinicians worldwide.

Registration is not yet open. Further information will be available soon.

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2026 Edition Highlights

The 12th Barcelona Debates on the Human Microbiome welcomed more than 200 participants and 24 leading experts to Barcelona on June 25–26 for two days dedicated to the latest developments in microbiome research.

Through sessions spanning host genetics, immunity, diet, women’s health, the gut–brain axis, and global microbiome initiatives, the meeting provided a comprehensive overview of current challenges and opportunities in the field.

The scientific programme was complemented by 56 Poster Flash Communications, offering researchers the opportunity to present and discuss their latest discoveries with the international microbiome community.

What they say about us

I really enjoyed the meeting, and I have to say, it is one of the best meetings I have attended in a long time. Great presentation, lots of interactions with other faculty and students, an amazing location, … all the right elements for a fantastic meeting. Thanks again for the wonderful organization.
Attendee from 2024 edition
Microbiologist
During more than a decade, The Barcelona Debates on the Human Microbiome has become a world-class reference meeting for learning about the latest advances on human microbiome science, spanning a broad variety of disciplines related to human diseases and human nature itself.
Roger Paredes
IrsiCaixa, Hospital Universitari Germans Trias i Pujol
Microbiome science has transformed biology and medicine, yet translating these advances into clinical practice remains challenging. The Barcelona Microbiome Debates offer an exceptional forum for communication and interaction among researchers committed to advancing robust science to improve human health.
Attendee from 2025 edition
Gastroenterology Consultant
This was my first time attending this conference and I am very grateful for the opportunity to learn about the work of leading researchers in the field of the microbiota and the gut–brain axis, and to meet them in person. The experience has been incredibly valuable for my own research, and I will most likely attend again next year.
Anna Castells Nobau
Girona Biomedical Research Institute
One of the best aspects of The Barcelona Debates on the Human Microbiome was the incredible mix of speakers from different backgrounds—everyone could take away something directly useful for their own work.
Attendee from 2025 edition
Bioinformatician
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