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Effect of berry-based supplements and foods on cognitive function: a systematic review
Negar Bonyadi1, Neda Dolatkhah2, Yaghoub Salekzamani3
1Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.
Scientific Reports
|February 26, 2022
Summary
Berry supplements and foods show promise for enhancing cognitive function and brain health in older adults. This review confirms their beneficial effects on memory, executive function, and processing speed.
Area of Science:
- Nutrition science
- Neuroscience
- Gerontology
Background:
- Growing evidence links diet to cognitive function and dementia in aging populations.
- Berry consumption is increasingly studied for its potential neuroprotective effects.
Purpose of the Study:
- To systematically review randomized controlled trials on berry supplements/foods and cognitive function in older adults.
- To assess the impact of berries on cognitive performance and brain perfusion in healthy or mildly impaired elderly individuals.
Main Methods:
- Comprehensive literature search across multiple electronic databases up to March 2021.
- Inclusion of eleven randomized controlled trials using various berry forms (frozen, concentrate, beverage, capsule, extract, powder).
- Analysis of studies involving older adults with normal cognition or mild cognitive impairment (MCI).
Main Results:
- Berry-based interventions positively influenced resting brain perfusion.
- Significant improvements were observed in global cognitive function, memory, and executive functioning.
- Enhanced processing speed and attention indices were also noted with berry consumption.
Conclusions:
- Berry-based supplements and foods demonstrate beneficial effects on cognitive performance in the elderly.
- These findings support the role of berries in maintaining or improving brain health in aging populations.
- Further research can explore optimal berry formulations and long-term cognitive impacts.
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