AUTHOR=Zhang Ruyi , Ding Ning , Feng Xicui , Liao Wenli TITLE=The gut microbiome, immune modulation, and cognitive decline: insights on the gut-brain axis JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1529958 DOI=10.3389/fimmu.2025.1529958 ISSN=1664-3224