Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function

Background: Obesity has been linked to an increased risk of dementia in the future. Obesity is known to affect core neural structures, such as the hippocampus, and frontotemporal parts of the brain, and is linked to memory, attention, and executive function decline. The overwhelming majority of the...

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Main Author: Antonio G. Lentoor
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:NeuroSci
Subjects:
Online Access:https://www.mdpi.com/2673-4087/3/3/27
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author Antonio G. Lentoor
author_facet Antonio G. Lentoor
author_sort Antonio G. Lentoor
collection DOAJ
description Background: Obesity has been linked to an increased risk of dementia in the future. Obesity is known to affect core neural structures, such as the hippocampus, and frontotemporal parts of the brain, and is linked to memory, attention, and executive function decline. The overwhelming majority of the data, however, comes from high-income countries. In undeveloped countries, there is little evidence of a link between obesity and neurocognition. The aim of this study was to investigate the effects of BMI on the key cognitive functioning tasks of attention, memory, and executive function in a South African cohort. Methods: A total of 175 females (NW: BMI = 18.5–24.9 kg/m<sup>2</sup> and OB: BMI > 30.0 kg/m<sup>2</sup>) aged 18–59 years (M = 28, SD = 8.87 years) completed tasks on memory, attention, and executive functioning. Results: There was a statistically significant difference between the groups. The participants who had a BMI corresponding with obesity performed poorly on the tasks measuring memory (<i>p</i> = 0.01), attention (<i>p</i> = 0.01), and executive function (<i>p</i> = 0.02) compared to the normal-weight group. Conclusions: When compared to normal-weight participants, the findings confirm the existence of lowered cognitive performance in obese persons on tasks involving planning, decision making, self-control, and regulation. Further research into the potential underlying mechanism by which obesity impacts cognition is indicated.
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spelling doaj.art-46ac222dad31496690ff3d54b558bbfd2023-11-23T18:08:48ZengMDPI AGNeuroSci2673-40872022-06-013337638610.3390/neurosci3030027Obesity and Neurocognitive Performance of Memory, Attention, and Executive FunctionAntonio G. Lentoor0Department of Clinical Psychology, School of Medicine, Sefako Makgatho Health Sciences University, Ga-Rankuwa, Pretoria 0208, South AfricaBackground: Obesity has been linked to an increased risk of dementia in the future. Obesity is known to affect core neural structures, such as the hippocampus, and frontotemporal parts of the brain, and is linked to memory, attention, and executive function decline. The overwhelming majority of the data, however, comes from high-income countries. In undeveloped countries, there is little evidence of a link between obesity and neurocognition. The aim of this study was to investigate the effects of BMI on the key cognitive functioning tasks of attention, memory, and executive function in a South African cohort. Methods: A total of 175 females (NW: BMI = 18.5–24.9 kg/m<sup>2</sup> and OB: BMI > 30.0 kg/m<sup>2</sup>) aged 18–59 years (M = 28, SD = 8.87 years) completed tasks on memory, attention, and executive functioning. Results: There was a statistically significant difference between the groups. The participants who had a BMI corresponding with obesity performed poorly on the tasks measuring memory (<i>p</i> = 0.01), attention (<i>p</i> = 0.01), and executive function (<i>p</i> = 0.02) compared to the normal-weight group. Conclusions: When compared to normal-weight participants, the findings confirm the existence of lowered cognitive performance in obese persons on tasks involving planning, decision making, self-control, and regulation. Further research into the potential underlying mechanism by which obesity impacts cognition is indicated.https://www.mdpi.com/2673-4087/3/3/27body mass indexbrain functioncognitiondeveloping contextneuropsychological testsobesity
spellingShingle Antonio G. Lentoor
Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function
NeuroSci
body mass index
brain function
cognition
developing context
neuropsychological tests
obesity
title Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function
title_full Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function
title_fullStr Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function
title_full_unstemmed Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function
title_short Obesity and Neurocognitive Performance of Memory, Attention, and Executive Function
title_sort obesity and neurocognitive performance of memory attention and executive function
topic body mass index
brain function
cognition
developing context
neuropsychological tests
obesity
url https://www.mdpi.com/2673-4087/3/3/27
work_keys_str_mv AT antonioglentoor obesityandneurocognitiveperformanceofmemoryattentionandexecutivefunction