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    Serum Magnesium and Cognitive Function Among Qatari Adults

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    Date
    2020-04
    Author
    Al-Ghazali, Kateba
    Eltayeb, Sana
    Musleh, Ayesha
    Al-Abdi, Tamara
    Ganji, Vijay
    Shi, Zumin
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    Abstract
    Background: Previous studies found that low blood magnesium increases the risk of several diseases such as cardiovascular diseases (CVD), diabetes, and hypertension. These ailments are associated with declined cognitive function. Objective: We aimed to examine the association between serum magnesium and cognitive function among Qatari adults. In addition, we assessed the interaction relation between low serum magnesium, hypertension, and diabetes in relation to cognitive function. Method: Data from 1,000 Qatari participants aged 20 years old who participated in the Qatar Biobank (QBB) Study were analyzed. Serum magnesium was measured by an automated calorimetric method and suboptimal magnesium was characterized by <0.85 mmol/l. Cognitive function was determined by measuring the mean reaction time (MRT) based on a computer-based, self-administered test. Multivariable linear regression was used to examine the relation between serum magnesium concentrations and cognitive function. Results: The prevalence of suboptimal magnesium was 57.1%. Across the four quartiles of serum magnesium from the lowest to the highest, the regression coefficients (95% CI) for MRT were 0 (reference), 􀀀17.8, 􀀀18.3, and 􀀀31.9 (95% CI 2.4–3.1; p for trend 0.05). The presence of hypertension and diabetes significantly increased the MRT. Women with suboptimal magnesium and hypertension had the highest MRT. Conclusion: The prevalence of suboptimal magnesium is high in Qatar. There was a direct association between serum magnesium and cognitive function. Low magnesium concentrations were associated with a longer MRT.
    DOI/handle
    http://dx.doi.org/10.3389/fnagi.2020.00101
    http://hdl.handle.net/10576/14298
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