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April 30, 2026

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 Gröeger Jouni Junnila Fergus Collins Eileen F. Murphy Katy Sorensen Timothy G. Dinan

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Key Points

The aim is to evaluate the effects of Bifidobacterium longum 1714 on mood and related symptoms.
Randomized double-blind placebo-controlled trial design
Assessment of various aspects of mood and mental wellness
Comparison between Bifidobacterium longum 1714 and placebo groups.
Bifidobacterium longum 1714 demonstrated fast-acting positive effects on mood
Participants reported improvements in mental wellness indicators
Safety was confirmed with no adverse effects noted.

Implication

Randomized trial shows positive mood effects in individuals, suggesting a potential mental health intervention.

Abstract

1714 is safe and may exert fast-acting positive effects on various aspects of mood and mental wellness. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

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Cite This Study

Seamans et al. (2026) studied this question.

synapsesocial.com/papers/69f6e5f38071d4f1bdfc6841 https://doi.org/10.1037/pha0000839

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Keep reading

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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