Hajjar, Roy
Mars, Ruben A. T. https://orcid.org/0000-0002-3917-9517
Kashyap, Purna C. https://orcid.org/0000-0002-2851-2388
Article History
Accepted: 18 November 2025
First Online: 5 January 2026
Competing interests
: P.C.K. is a member of the scientific advisory board of the International Observatory of Biocodex Microbiota Institute, chair of the scientific advisory board of the American Gastroenterology Association Center for Gut Microbiome Education and Research, ad hoc advisory board member for Pendulum and Intrinsic Medicine, and advisory board member for 32 Biosciences for which he receives equity option as compensation. R.A.T.M. serves as a founding adviser of Tiny Health. R.H. declares no competing interests.