Cross-cohort meta-analysis reveals conserved gut microbiome signatures of insomnia
HIGHLIGHTS • Cross-cohort meta-analysis reveals reproducible gut microbiome signatures of insomnia • Eight conserved gut taxa are consistently associated with insomnia across studies • A small number of gut microbes drive most insomnia-associated functional shifts • The Burkholderia - Caballeronia-Paraburkholderia (BCP) complex drives key functions • Microbial metabolic changes may indirectly shape host immune and neural states