Gut-brain axis: Postbiotic shows potential to ease stress and brain activity

A study from Asahi Quality and Innovations in Japan found that a single dose of heat-treated Lactobacillus gasseri CP2305, a postbiotic, increased brain alpha activity and improved parasympathetic nervous system function in healthy adults, suggesting relaxation and reduced stress. The double-blind, placebo-controlled trial with 28 participants showed significant improvements in mental stress scores and increased serotonin secretion, indicating a gut-brain mechanism. The findings highlight CP2305 as a promising functional food ingredient for mental health, though further research is needed to clarify mechanisms and broader applications.