Nature CommunicationsLongitudinal metabolomics profiles reveal increased gut microbial protein fermentation during SpaceflightGiorgia La BarberaJan StanstrupSara R. ZwartScott M. SmithHenrik M. RoagerLars Ove Dragsted2026-06-29Full textDOI https://doi.org/10.1038/s41467-026-74979-w