Objective: Youth obesity is a worldwide threat to physical health and is known to negatively associate with mental health. Youth obesity has been shown to predict lower IQ; however, the impact of race on this association has not been fully studied. Here we examined the relationship between IQ and body mass index (BMI) in a selective Hispanic sample of males and females between the ages of 4 and 18 years. The study included 27 Hispanics, 7 Caucasians, and 15 others, for a total of 41 youths. Method: During the course of routine outpatient clinical neuropsychological evaluations, we measured the height and weight among youth examinees in order to compute BMI. All 41 youths were then administered the Wechsler Intelligence Scale for Children-Fifth Edition (WISC-V), allowing for bivariate correlations between WISC-V composite scales and youth BMI values. Results: All correlations between youth BMI and the six WISC-V composite scales were negative...

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