Systematic Review of the Effects of Blueberry on Cognitive Performance as We Age

Hein, Sabine; Whyte, Adrian R.; Wood, Eleanor; Rodriguez-Mateos, Ana; Williams, Claire

doi:10.1093/gerona/glz082

Cited by 44 publications

(39 citation statements)

References 49 publications

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“…The benefit was notable in that seventeen more words were recalled following DC relative to WC over the course of seven trials. In support of the validity of the present findings, the task used (RAVLT) has shown sensitivity to other acute flavonoid interventions, including blueberries (see [25] for a review) and the Haskap berry [26].…”

Section: Discussionsupporting

confidence: 79%

“…Interestingly, there were no effects of interference, which suggests that the DC did not reduce the process of forgetting caused by the learning of new words or reduce the effect of old learning on new learning. The benefit of increasing one's capacity to learn and recall words, with few effects on interference, is also seen in the blueberry flavonoid literature [25]. It would be of interest to explore effects on delayed recall ~30 min post learning and other complex subtleties of verbal episodic memory, such as source monitoring, which may give insight into the brain regions affected and the mechanisms of action.…”

Section: Discussionmentioning

confidence: 99%

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Beneficial Effects of Dark Chocolate for Episodic Memory in Healthy Young Adults: A Parallel-Groups Acute Intervention with a White Chocolate Control

2020

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There is good evidence that cocoa flavonoids can acutely improve cognitive function in humans, possibly via mechanisms such as increased cerebral blood flow. To date, much of the evidence is based on measures of executive function with extracts and cocoa-based interventions with a high flavonoid content. The aim of the present study was to explore whether benefits to episodic verbal memory and mood are observed two hours post consumption of a commercially available dark chocolate (DC) bar relative to a 35 g white chocolate bar (WC). Ninety-eight healthy young adults (n = 57 females) aged 18–24 years consumed either a 35 g DC bar or a calorie-matched low flavonoid WC bar. Verbal episodic memory and mood were assessed pre consumption and 2 h post consumption. An ANOVA analysis showed that the DC was associated with better verbal memory performance for several outcome measures of the Rey Auditory Verbal Learning Test relative to the WC, however, there were no effects on mood. These findings lend support to the notion that everyday available portions of dark chocolate can confer benefits to the brain in healthy consumers.

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Section: Discussionsupporting

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Beneficial Effects of Dark Chocolate for Episodic Memory in Healthy Young Adults: A Parallel-Groups Acute Intervention with a White Chocolate Control

2020

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“…Polyphenol-rich diet has been associated with a range of health benefits, including anti-inflammatory effects, improvement of the endothelial and vascular function, improvement of fasting serum glucose, as well as beneficial effects on the gut microbiome and modulation of energy metabolism. Thus, polyphenols are effective in optimizing cardiometabolic health and reduce risk factors of type II diabetes and the metabolic syndrome and may protect against cognitive decline and dementia [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of sweeteners and storage on compositional and sensory properties of blackberry jams

Benedek

Bodor

Merrill

et al. 2020

Eur Food Res Technol

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Sweeteners of natural sources, such as sugar alcohols, are in the centre of growing interest. Their impact on the phytochemicals, antioxidant and sensory properties of blackberry jams were investigated during a 9-months storage period. Measurements on jams prepared with different sugars and sugar alcohols (sucrose, fructose, xylitol and erythritol) were performed at the date of preparation and in the 1st, 3rd, 6th, 9th month. Total polyphenol content, individual polyphenols, antioxidant properties, anthocyanin content and CIE L*a*b* colour were determined. Sensory profiles were determined by a trained panel. Sensory attributes were compared by the results of the electronic tongue and nose. Sweeteners had a significant impact on physicochemical properties and sensory attributes. Storage time also affected the sensory and compositional properties of jams. Changes in antioxidant properties did not follow a clear trend during the storage period, and antioxidant capacity was not affected significantly by the sweetening agent, but showed a significant decline from the 6th month. A positive effect of xylitol was observed in terms of a low degradation rate of anthocyanins, while their decomposition was the fastest in the fructose-containing preparation. Jams sweetened with erythritol reached significantly lower values for some sensory attributes (blackberry flavour and general taste intensity), however, they showed more intense red colour. Multiple factor analysis enabled the identification of the effect of sweetener and storage time on the pattern of the sensory data matrix. Classification according to individual sweeteners was performed successfully by the electronic tongue, but not by electronic nose.

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“…The 22 p values listed in Tables 2-4 of Hein et al (1) were included in analyses, with the exception of a value of .043 in the healthy children studies, which indicated a significant difference but in the opposite direction than expected. Therefore, analyses were conducted both with and without this value.…”

Section: Methodsmentioning

confidence: 99%

Blueberries and Cognitive Ability: A Test of Publication Bias and Questionable Research Practices

Brydges

Gaeta

2020

The Journals of Gerontology: Series A

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Accepted in Journals of Gerontology Series A: Biological Sciences and Medical Sciences BLUEBERRIES, COGNITION, AND PUBLICATION BIAS 2 Hein et al (1) published a systematic review of the effects of blueberries on cognitive performance, finding that benefits may be observed for delayed memory, executive functioning, and psychomotor functioning in healthy children, healthy older adults, and/or older adults suffering from mild cognitive impairment (MCI). The purpose of the following analyses was to

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Systematic Review of the Effects of Blueberry on Cognitive Performance as We Age

Cited by 44 publications

References 49 publications

Beneficial Effects of Dark Chocolate for Episodic Memory in Healthy Young Adults: A Parallel-Groups Acute Intervention with a White Chocolate Control

Beneficial Effects of Dark Chocolate for Episodic Memory in Healthy Young Adults: A Parallel-Groups Acute Intervention with a White Chocolate Control

Effect of sweeteners and storage on compositional and sensory properties of blackberry jams

Blueberries and Cognitive Ability: A Test of Publication Bias and Questionable Research Practices

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