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Journal Article
Review
[Effects of overweight and obesity on cognitive functions of children and adolescents].
Revista de Neurologia 2022 August 2
INTRODUCTION: Recent findings suggest that overweight and obesity in children and adolescents affect cognitive processes and can alter school learning. The so-called executive functions, such as response inhibition capacity, impulsivity control, cognitive flexibility, planning, and decision making, have been inversely related to body mass index.
AIM: This work aims to examine the neurobiological and psychological hypothesis that explain why overweight, and obesity alter the cognitive functions of children and adolescents.
DEVELOPMENT: Diets rich in fats and sugars can cause hyperinsulinemia, dyslipidemia, hypertension, augmented abdominal adipose tissue and resistance to insulin and leptin. These metabolic alterations induce a peripheral systemic inflammatory process that can affect the blood-brain barrier and the brain functioning of regions linked to attention and learning and memory processes. Some metabolic disorders of the pregnant mother, obesity during pregnancy and pre- and postnatal traumatic experiences can trigger changes in the control of food intake in children and adolescents and induce overweight in critical stages of their development. Obesity affects the functioning of the hippocampus and produces a decrease in the prefrontal cortex gray matter, thereby modifying cognitive abilities, especially executive functions.
CONCLUSIONS: Overweight and obesity in childhood and adolescence are a risk factor not only for general health but also for proper brain development and cognitive functions and can therefore lead to school failure.
AIM: This work aims to examine the neurobiological and psychological hypothesis that explain why overweight, and obesity alter the cognitive functions of children and adolescents.
DEVELOPMENT: Diets rich in fats and sugars can cause hyperinsulinemia, dyslipidemia, hypertension, augmented abdominal adipose tissue and resistance to insulin and leptin. These metabolic alterations induce a peripheral systemic inflammatory process that can affect the blood-brain barrier and the brain functioning of regions linked to attention and learning and memory processes. Some metabolic disorders of the pregnant mother, obesity during pregnancy and pre- and postnatal traumatic experiences can trigger changes in the control of food intake in children and adolescents and induce overweight in critical stages of their development. Obesity affects the functioning of the hippocampus and produces a decrease in the prefrontal cortex gray matter, thereby modifying cognitive abilities, especially executive functions.
CONCLUSIONS: Overweight and obesity in childhood and adolescence are a risk factor not only for general health but also for proper brain development and cognitive functions and can therefore lead to school failure.
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