Globally, cognitive impairments including Alzheimer’s disease and dementia, have become a major concern. The total number of people with dementia has increased from 20.2 million in 1990 to 43.8 million in 2016 and dementia was the fifth leading cause of death accounting for 2.4 million deaths worldwide in 2016.
Diet can affect brain function through different mechanisms including the regulation of neurotransmitter pathways, synaptic transmission, membrane fluidity and signal transduction pathways. Many nutrients, such as omega-3 fatty acids, flavonoids, vitamin E, have been examined for their role in cognitive function.
Nuts are good sources of polyunsaturated fatty acids, phytosterols, polyphenols, and magnesium. Nut consumption has been shown to be beneficial for the prevention of many chronic diseases including diabetes and hypertension - both of which are risk factors for cognitive impairment.
Previous population observational studies suggest a beneficial effect of nuts on cognition. On the other hand, a few studies have shown no association between cognitive function and nuts intake.
The aims of the current study were to (1) to assess the association between nuts consumption and cognitive function among the Qatari population; (2) to test whether magnesium, hypertension, and diabetes mediate this association between nut consumption and cognitive function.
The study
Qatar Biobank Study (QBB) is an ongoing cohort study started in 2012 with over 15,000 participants. In the current analysis, 1000 Qatari adults aged 20 years and above were randomly selected by the QBB management team. Using a self-administered questionnaire, socio-demographic information, lifestyle factors, and dietary habits were collected. In addition, medical and family history information were obtained by a nurse interview and a health examination was conducted.
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October 20, 2021 at 05:20PM
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Study links nut consumption to improved cognitive function - NutraIngredients.com
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