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Association of Cognitive Function With Nutritional Zinc Status in Adolescent Female Students Publisher



Amani R1, 2 ; Tahmasebi K2 ; Nematpour S4 ; Nazari Z3 ; Ahmadi K5 ; Mostafavi SA6
Authors
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Authors Affiliations
  1. 1. Food Security Center, Dept. of Clinical Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Health Research Institute, Diabetes Research Center, Dept. of Nutrition, School of Paramedicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  3. 3. Golestan Medical Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  4. 4. Dept. of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
  5. 5. Dept of Statistics and Epidemiology, School of Public Health, Jundishapur University, Ahvaz, Iran
  6. 6. Department of Nutrition and Psychiatry, Psychiatry and Psychology Research Center, Tehran University of Medical Sciences, Tehran, Iran

Source: Progress in Nutrition Published:2019


Abstract

Background and Objective: Zinc deficiency has been recognized as a crucial public health issue, especially among younger adults in developing countries. Therefore, the main objective of this study was to assess the correlation of serum zinc concentrations and dietary zinc intake with cognitive function scores in high school female students. Methods: A sample of 100 students participated in this cross-sectional study. Each participant completed a 3 day 24-h food recall questionnaire to assess the daily zinc intake. We assessed serum zinc status using flame atomic absorption spectrometry technique. Cognitive function was obtained by summing the scores of five tests including Raven’s Standard Progressive Matrices test (RPM) on non-verbal intelligence, Benton visual retention test, Wechsler memory scale, Bonnardel accuracy test and letter eliminating test. Results: The mean of zinc intake and zinc serum level were 9.49±2.08 mg/day, 105.51±31µg/dL respectively. The mean scores on Raven’s RPM, Benton’s, Wechsler’s, Bonnardel’s and letter eliminating tests were 91.44±11.8, 6.8±1.8, 84.64±11.2, 46±6 and 44.84±5.2 respectively. None of the participants reached the ceiling performance. IQ and Memory tests were strongly correlated (p ≤ 0.001). After adjusting the basic variables, strong positive correlations between serum, but not dietary zinc levels, and Raven’s, memory, Bonnardel’s and letter eliminating scores (p<0.001 for all) were detected. Memory scores were marginally correlated with serum zinc concentrations (p=0.05). Conclusion: Our findings indicate that serum zinc levels are positively correlated with various aspects of brain cognitive function in young female students. © Mattioli 1885
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