AUTHOR=Drago Lorenzo TITLE=Navigating microbiome variability: implications for research, diagnostics, and direct-to-consumer testing JOURNAL=Frontiers in Microbiology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1580531 DOI=10.3389/fmicb.2025.1580531 ISSN=1664-302X