Insights & Discussion
These reports suggest the benefits of a walnut-enriched diet in brain disorders and in other chronic diseases, due to the additive or synergistic effects of walnut components for protection against oxidative stress and inflammation in these diseases.
Walnuts contain several components that have antioxidant and anti-inflammatory effects. Animal and human studies from our and other groups suggest that supplementation with walnuts in the diet may improve cognition and reduce the risk and/or progression of mild cognitive impairment and Alzheimer's disease.
Furthermore, several animal and human studies have suggested that walnuts may also decrease the risk or progression of other brain disorders such as Parkinson’s disease, stroke, and depression, as well as of cardiovascular disease and type 2 diabetes. Together, these reports suggest the benefits of a walnut-enriched diet in brain disorders and in other chronic diseases, due to the additive or synergistic effects of walnut components for protection against oxidative stress and inflammation in these diseases.
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Honey exhibits multifaceted benefits for brain health, acting as a memory booster, neuroprotective agent, anti-stress, and anti-nociceptive substance, fostering potential therapeutic applications to enhance overall cognitive well-being.
2023 Frontiers in Aging Neuroscience Honey on brain health: A promising brain booster Zamri NA, Ghani N, Ismail CAN, Zakaria R, Shafin N
Review Article Brain Health Cognitive Function Honey
This review scrutinizes 34 original articles exploring the impact of honey on brain health. Honey, traditionally known as a natural sweetener, emerges as a versatile substance with applications in nutrition, health supplementation, and brain health enhancement. The analysis identifies four key benefits: memory enhancement, neuroprotection, stress reduction, and pain alleviation. The review emphasizes the growing interest in understanding the mechanisms that underlie these effects, paving the way for potential therapeutic roles of honey in promoting cognitive well-being.
The literature review underscores the significant role of honey in brain health research, shedding light on its diverse benefits, including memory improvement, neuroprotection, stress mitigation, and pain relief. The emphasis on unraveling the underlying mechanisms reflects a broader interest in establishing honey's therapeutic potential for enhancing overall brain health. This comprehensive exploration of honey's effects on cognition opens avenues for developing novel therapeutic strategies harnessing honey's natural properties.
Magnesium, essential for harmonising nerve signals and preserving the blood-brain barrier, may be linked to neurodegenerative disorders when its balance is disrupted.
2022 International Journal of Molecular Sciences Magnesium and the Brain: A Focus on Neuroinflammation and Neurodegeneration Maier JAM, Locatelli L, Fedele G, Cazzaniga A, Mazur A
Review Article Alzheimer's Disease Magnesium Multiple Sclerosis
The researchers performed a narrative review, beginning with a quick overview of the role of magnesium in the brain. Magnesium is crucial for healthy nerve signal transmission and the upkeep of the blood-brain barrier, which protects the brain from harmful substances in the blood. Then, they discussed evidence suggesting a connection between disrupted magnesium balance and a variety of neurodegenerative disorders.
In the discussion of the results, it was posited that a deficiency in magnesium might contribute to low-grade systemic inflammation, which is common in many illnesses. Specifically, they argued that such inflammation in the brain is a characteristic feature of neurodegenerative diseases. The review found evidence that disruptions in the body's magnesium balance could be associated with multiple sclerosis, Alzheimer's, and Parkinson's diseases.
Consumption of wild blueberries over six months can improve cognitive performance and speed of processing information amongst older adults.
2022 Nutritional Neuroscience Six-month intervention with wild blueberries improved speed of processing in mild cognitive decline: a double-blind, placebo-controlled, randomized clinical trial. Cheatham CL, Canipe LG, Millsap G, Stegall JM, Chai SC, Sheppard KW, et al.
Randomised Controlled Trial Blueberry Brain Health Cognitive Function
The methodology of this research involved conducting a double-blind, randomized placebo-controlled trial where participants with cognitive issues ascertained by Montreal Cognitive Assessment scores were asked to consume wild blueberry or placebo powder daily for a 6-month period. There was also a separate reference group involved, comprised of individuals devoid of any cognitive issues. These individuals were tested at the commencement and end of the trial using the Cambridge Neurological Test Automated Battery and an electrophysiological paradigm named event-related potentials.
The results presented disclosed a significant improvement in the speed of processing information in the group consuming blueberries compared to the placebo group over the 6-month intervention period. Additionally, the speed of this group's processing was re-established to the level of the reference group, revealing the restoration of cognitive abilities. The most distinct enhancement was noted in participants aged between 75-80 years in the blueberry group.
Green tea's catechins demonstrate therapeutic effects against neurodegenerative diseases via anti-inflammatory, antioxidant actions, and activating diverse brain cellular pathways.
2022 Molecules Green Tea Catechins Attenuate Neurodegenerative Diseases and Cognitive Deficits Afzal O, Dalhat MH, Altamimi ASA, Rasool R, Alzarea SI, Almalki WH, et al.
Review Article Alzheimer's Disease Cognitive Function Green Tea
The research primarily evaluates the effect of polyphenolic compounds found in green tea, known as catechins, on neurodegenerative diseases. By conducting several interventional and observational studies on humans, the research explores the anti-cancer, anti-obesity, antidiabetic, anti-inflammatory, and neuroprotective properties of these compounds. The biological, pharmacological, antioxidant, and metal chelating abilities of catechins, particularly their influence on different cellular pathways within the brain, are intensively studied.
The results elucidate that catechins exhibit multiple neuroprotective effects. Their anti-inflammatory and antioxidant properties help to inhibit excessive production of cytokines, and inflammatory pathways, while also controlling metal ions and free radicals. Researchers have further established that catechins may curb the phosphorylation of the tau protein and aggregation of amyloid beta, both key markers in neurodegenerative diseases. Additionally, these compounds show potential in reducing alpha-synuclein levels and augmenting dopamine levels. Hence, they significantly contribute to the prevention and treatment of neurodegenerative diseases, including Alzheimer's, Parkinson's, multiple sclerosis, and cognitive deficits.
The existing evidence, although with low level of confidence, suggests that walnut intake may have a beneficial effect on cognition-related outcomes, including cognitive function, mood, and stroke.
2021 Annals of Medicine Walnut intake, cognitive outcomes and risk factors: a systematic review and meta-analysis Cahoon, D., Shertukde, S. P., Avendano, E. E., et al.
Systematic Review Alzheimer's Disease Dementia Stroke
The existing evidence, although with low level of confidence, suggests that walnut intake may have a beneficial effect on cognition-related outcomes, including cognitive function, mood, and stroke. Limitations in study design and comparability render the available evidence insufficient to draw a firm conclusion regarding the effects of walnut on cognition in adults. High quality studies and standardized interventions and measurement tools are necessary to determine the role of walnut intake in cognitive health.
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