Probiotic Supplementation Improves Cognitive Function and Mood with Changes in Gut Microbiota in Community-Dwelling Older Adults: A Randomized, Double-Blind, Placebo-Controlled, Multicenter Trial.
J Gerontol A Biol Sci Med Sci. 2021 Jan 1;76(1):32-40. doi: 10.1093/gerona/glaa090. J Gerontol A Biol Sci Med Sci. 2021. PMID: 32300799 Free PMC article. Clinical Trial.