Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Bifidobacteria is a genus of probiotic bacteria commonly found in the human gut, and its use in supporting stress management is primarily justified by emerging scientific evidence. Several preclinical and clinical studies suggest that Bifidobacteria may influence the gut-brain axis, a bidirectional communication system between the gastrointestinal tract and the central nervous system. For example, a 2017 randomized controlled trial published in Translational Psychiatry found that supplementation with Bifidobacterium longum 1714 reduced perceived stress and improved memory in healthy volunteers. Other studies have demonstrated that certain Bifidobacteria strains can lower cortisol levels and modulate inflammatory markers associated with stress response.

The proposed mechanisms include modulation of gut microbiota composition, reduction of systemic inflammation, and direct effects on neurotransmitter production (such as serotonin and GABA). However, while animal models show more robust effects, human evidence is still limited, with variability in study design, strains used, and outcome measures. Most research supports their use as part of a broader approach to mental wellness rather than as stand-alone therapy. Thus, while there is scientific validation of Bifidobacteria's potential role in stress support, the evidence is moderate and strain-specific, meriting a rating of 3 out of 5.

More about Bifidobacteria
More about Stress

Other ingredients used for Stress

Other health conditions supported by Bifidobacteria

Products containing Bifidobacteria