Evidence map›Paper›PMID 34041549›Full record

SynthesisNutrition reviews2022

The effect of grape interventions on cognitive and mental performance in healthy participants and those with mild cognitive impairment: a systematic review of randomized controlled trials.

Rachel Jayne Bird, Nigel Hoggard, Magaly Aceves-Martins

Abstract readSystematic Review
In one paragraph

Synthesis in Nutrition reviews, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  4. Review
  5. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Rachel Jayne BirdRowett Institute, University of Aberdeen, Aberdeen, United Kingdom. M. Aceves-Martins is with the Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom.
Nigel HoggardRowett Institute, University of Aberdeen, Aberdeen, United Kingdom. M. Aceves-Martins is with the Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom.
Magaly Aceves-MartinsRowett Institute, University of Aberdeen, Aberdeen, United Kingdom. M. Aceves-Martins is with the Health Services Research Unit, University of Aberdeen, Aberdeen, United Kingdom.ORCID 0000-0002-9441-142X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

contextThe prevalence of cognitive and mental health disorders are growing, and existing drug therapies do not treat the underlying cause. Grapes are a flavonoid-rich soft fruit and may therefore be beneficial to cognitive and mental health.

objectiveTo systematically review evidence from randomized controlled trials investigating the acute and chronic effects of grape interventions on measures of cognition and mood in healthy participants and those with mild cognitive impairment. DATA SOURCES: MEDLINE, The Cochrane Library and EMBASE were searched. DATA EXTRACTION AND ANALYSIS: Eight studies met the inclusion criteria: one considered acute interventions, 6 assessed chronic effects, and one assessed acute and chronic effects of grapes. The chronic studies found improvements in some cognitive domains (eg, memory, motor skills, or executive function). Acute studies found no consistent effect on memory but saw improvements in reaction time.

conclusionsDifferences in study design, dosages, and outcome tests hindered between-study comparison. Even so, the results across studies show that grapes can enhance some aspects of cognition, after both acute and chronic interventions. SYSTEMATIC REVIEW REGISTRATION: PROSPERO registration no. CRD42020193062.

Indexed as

Cognitive DysfunctionVitisCognitionHealthy VolunteersHumansRandomized Controlled Trials as TopiccognitiongrapememorymoodVitis

Identifiers

PMID34041549
PMCPMC8829676

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.