The Effect of Anthocyanins on Cognition: A Systematic Review and Meta-analysis of Randomized Clinical Trial Studies in Cognitively Impaired and Healthy Adults.

Separate meta-analyses encompassing five studies pertaining to immediate memory [ 30 , 80 , 86 , 88 , 90 ] and 10 studies addressing delayed memory [ 80 – 83 , 88 – 90 , 92 , 109 , 111 ] failed to reach statistical significance as follows: (Hedges’s g = 0.196, 95% CI = (−0.242, 0.633), p = 0.38) and (Hedges’s g = −0.188, 95% CI = (−0.629, −0.252), p = 0.402, respectively).

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