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Abstract
Background: Due to the increasing burden of age-related
cognitive decline, interventions that can improve cognitive
performance are of interest. Resveratrol, a plant derived
polyphenol, has been reported to improve cognitive
performance in animal models and has recently been
investigated in several clinical trials. The aim of this systematic
review was to evaluate clinical trial data regarding the effect of
resveratrol on cognitive performance.
Methods: In accordance with PRISMA guidelines, a systematic
literature review and meta-analysis was conducted using the
following databases: MEDLINE, CINAHL, Cochrane, EMBASE
and Proquest. Studies included in this review stipulated that
the independent variable was resveratrol and used outcome
measures of cognitive performance. A meta-analysis was
conducted to determine treatment effect on the following
cognitive domains and mental processes: processing speed,
number facility, mood, and memory. Risk of bias was assessed
using the Cochrane Collaboration Risk of Bias tool; and quality
of the body of evidence assessed by GRADE.
Results: Ten clinical trials were included. Three studies
reported resveratrol to significantly improve some measures
of cognitive performance, two reported mixed findings, and
five reported no effect. When data was pooled, resveratrol
significantly improved delayed recognition, a measure of
working memory (SMD 0.39 [95% CI 0.08, 0.70]; I2=0%;
p=0.01; n=3 studies; n=166 participants; GRADE level:
moderate) and negative mood (SMD -0.18 [95% CI -0.31,
-0.05]; I2=0%; p=0.006; n=3 studies; n=163 participants;
GRADE level: moderate). Included studies generally had
low risk of bias and study outcomes were of moderate
or high quality. There was considerable heterogeneity in
the methodology of the included studies regarding the
intervention length, and participant age and disease status
Conclusion: The results of this systematic review indicate
that resveratrol might improve select measures of cognitive
performance; however, the current literature is inconsistent.
Future studies are recommended to focus on long-term
supplementation and adjustment for existing limitations such
as dietary polyphenol intake.
cognitive decline, interventions that can improve cognitive
performance are of interest. Resveratrol, a plant derived
polyphenol, has been reported to improve cognitive
performance in animal models and has recently been
investigated in several clinical trials. The aim of this systematic
review was to evaluate clinical trial data regarding the effect of
resveratrol on cognitive performance.
Methods: In accordance with PRISMA guidelines, a systematic
literature review and meta-analysis was conducted using the
following databases: MEDLINE, CINAHL, Cochrane, EMBASE
and Proquest. Studies included in this review stipulated that
the independent variable was resveratrol and used outcome
measures of cognitive performance. A meta-analysis was
conducted to determine treatment effect on the following
cognitive domains and mental processes: processing speed,
number facility, mood, and memory. Risk of bias was assessed
using the Cochrane Collaboration Risk of Bias tool; and quality
of the body of evidence assessed by GRADE.
Results: Ten clinical trials were included. Three studies
reported resveratrol to significantly improve some measures
of cognitive performance, two reported mixed findings, and
five reported no effect. When data was pooled, resveratrol
significantly improved delayed recognition, a measure of
working memory (SMD 0.39 [95% CI 0.08, 0.70]; I2=0%;
p=0.01; n=3 studies; n=166 participants; GRADE level:
moderate) and negative mood (SMD -0.18 [95% CI -0.31,
-0.05]; I2=0%; p=0.006; n=3 studies; n=163 participants;
GRADE level: moderate). Included studies generally had
low risk of bias and study outcomes were of moderate
or high quality. There was considerable heterogeneity in
the methodology of the included studies regarding the
intervention length, and participant age and disease status
Conclusion: The results of this systematic review indicate
that resveratrol might improve select measures of cognitive
performance; however, the current literature is inconsistent.
Future studies are recommended to focus on long-term
supplementation and adjustment for existing limitations such
as dietary polyphenol intake.
| Original language | English |
|---|---|
| Publication status | Published - Nov 2017 |
| Event | 43rd Annual Scientific Meeting of the Australasian Society for Parenteral and Enteral Nutrition: Collaboration in Clinical Nutrition – Evidence Based Nutrition for Improving Patient Outcomes - Royal Pines Conference Centre, Gold Coast, Australia Duration: 16 Nov 2017 → 18 Nov 2017 Conference number: 43rd |
Conference
| Conference | 43rd Annual Scientific Meeting of the Australasian Society for Parenteral and Enteral Nutrition |
|---|---|
| Abbreviated title | AuSPEN 2017 |
| Country/Territory | Australia |
| City | Gold Coast |
| Period | 16/11/17 → 18/11/17 |
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