Supplemental Material for
Effects of Bifidobacterium longum 1714 on Low Mood and Related Symptoms: A Randomized, Double-Blind, Placebo-Controlled Trial
Kelly M. Seamans 
, Elaine Patterson, Caterina Holz , David Groeger, Jouni Junnila, Fergus Collins, Eileen F. Murphy, Katy Sorensen, and
Timothy G. Dinan
Experimental and Clinical Psychopharmacology,
Online First Publication,
April 23, 2026
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