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Neurosci Biobehav Rev. 2013 Mar;37(3):279-99. doi: 10.1016/j.neubiorev.2012.11.008. Epub 2012 Dec 19.

Neurobehavioural correlates of body mass index and eating behaviours in adults: a systematic review.

Author information

1
Montreal Neurological Institute, Department of Neurology & Neurosurgery, McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada. uku.vainik@gmail.com

Abstract

The worldwide increase in obesity has spurred numerous efforts to understand the regulation of eating behaviours and underlying brain mechanisms. These mechanisms can affordably be studied via neurobehavioural measures. Here, we systematically review these efforts, evaluating neurocognitive tests and personality questionnaires based on: (a) consistent relationship with obesity and eating behaviour, and (b) reliability. We also considered the measures' potential to shed light on the brain mechanisms underlying these individual differences. Sixty-six neurocognitive tasks were examined. Less than 11%, mainly measures of executive functions and food motivation, yielded both replicated and reliable effects. Several different personality questionnaires were consistently related to BMI. However, further analysis found that many of these questionnaires relate closely to Conscientiousness, Extraversion and Neuroticism within the Five-Factor Model of personality. Both neurocognitive tests and personality questionnaires suggest that the critical neural systems related to individual differences in obesity are lateral prefrontal structures underpinning self-control and striatal regions implicated in food motivation. This review can guide selection of the highest yield neurobehavioural measures for future studies.

PMID:
23261403
PMCID:
PMC4017079
DOI:
10.1016/j.neubiorev.2012.11.008
[Indexed for MEDLINE]
Free PMC Article

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