Effect of resveratrol on cognitive and memory performance and mood: A meta-analysis of 225 patients

Mohammad Hosein Farzaei; Roja Rahimi; Shekoufeh Nikfar; Mohammad Abdollahi

doi:10.1016/j.phrs.2017.08.009

Effect of resveratrol on cognitive and memory performance and mood: A meta-analysis of 225 patients

Pharmacol Res. 2018 Feb:128:338-344. doi: 10.1016/j.phrs.2017.08.009. Epub 2017 Aug 26.

Authors

Mohammad Hosein Farzaei¹, Roja Rahimi², Shekoufeh Nikfar³, Mohammad Abdollahi⁴

Affiliations

¹ Pharmaceutical Sciences Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran; Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
² Department of Traditional Pharmacy, School of Traditional Medicine, Tehran University of Medical Sciences, Tehran, Iran; Evidence-Based Medicine Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran.
³ Evidence-Based Medicine Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmacoeconomics and Pharmaceutical Administration, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
⁴ Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran; Department of Toxicology and Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran. Electronic address: mohammad@tums.ac.ir.

PMID: 28844841
DOI: 10.1016/j.phrs.2017.08.009

Abstract

Resveratrol is a natural dietary phenolic compound which is extensively present in many edible fruits, including grape, berries, pomegranates, and peanuts. Reseveratrol has a broad spectrum of biological activities including anti-aging, chemopreventive, anti-carcinogenic, anti-inflammatory and antioxidant effects and thus it is effective in related diseases. Particularly, the positive effects of resveratrol in neuropsychological diseases have been proven in in-vitro and in-vivo studies. Some clinical trials have reported that resveratrol possesses preventive and therapeutic effects in cognitive disorders. Therefore, the current systematic review and meta-analysis aimed to assess the effects of resveratrol on cognition and memory performance as well as mood state. Electronic databases including Scopus, PubMed, Science Direct, and Cochrane library were searched with the keywords "Memory", "Cognitive", "Cognition" or "Mood" with "Resveratrol" until June 2017. Only clinical studies were included in this review. We have provided the most reliable evidence to date counting results obtained from 226 individuals from four randomized clinical trials evaluating the mentioned specific effects of resveratrol. The results of this meta-analysis showed that resveratrol has no significant effect on memory and cognitive performance assessed by auditory verbal learning tests. Two parameters of Profile of Mood States (POMS) including vigor and fatigue, decreased significantly by resveratrol. However, decrease in other parameters of POMS including tense/anxiety, depression, anger, and confusion by resveratrol was not significant. The key findings from this meta-analysis are that resveratrol has no significant impact on factors related to memory and cognitive performance, including learning ability, delayed recall, retention, and recognition with all effect sizes non-significant and effectively at zero. However, it has the potential to enhance mood. Further randomized, controlled trials are needed to achieve more conclusive results.

Keywords: Cognition; Dementia; Memory; Meta-analysis; Mood; Natural product; Resveratrol; Systematic review.

Publication types

Meta-Analysis
Systematic Review

MeSH terms

Affect / drug effects*
Cognition / drug effects*
Humans
Memory / drug effects*
Randomized Controlled Trials as Topic
Resveratrol / pharmacology*

Substances

Resveratrol