The neuroactive potential of the elderly human gut microbiome is associated with mental health status. - Calderón-Romero, Paulina; Valderrama, Benjamin; Bastiaanssen, Thomaz F. S.; Lillo, Patricia; Thumala-Dockendorff, Daniela; Clarke, Gerard; Cryan, John F.; Slachevsky, Andrea; González-Billault, Christian; Court, Felipe A. (PLoS ONE, 2026)