Cited by 151Regulation of Appetite and ObesityEating Disorders and BehaviorsNeural and Behavioral Psychology Studies

Greater corticolimbic activation to high-calorie food cues after eating in obese vs. normal-weight adults

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Dimitropoulos, Anastasia, Tkach, Jean, Ho, Alan, Kennedy, James·2012·Appetite

Abstract

The goal of this research is to identify the neural response to rewarding food cues before and after eating in overweight/obese (OB) and normal-weight (NW) adults. Based on the previous literature, we expected greater differential activation to food cues vs. objects for OB compared to NW participants both prior to eating and after consumption of a typical lunch. Twenty-two overweight/obese (11 male) and 16 normal-weight (6 male) individuals participated in a functional magnetic resonance imaging task examining neural response to visual cues of high- and low-calorie foods before and after eating. The OB group demonstrated increased neural response to high- and low-calorie foods after eating in comparison to the NW participants in frontal, temporal, and limbic regions. In addition, greater activation in corticolimbic regions (lateral OFC, caudate, anterior cingulate) to high-calorie food cues was evident in OB vs. NW participants after eating. These findings suggest that for OB individuals, high-calorie food cues show sustained response in brain regions implicated in reward and addiction even after eating. Moreover, food cues did not elicit similar brain response after eating in the NW group suggesting that neural activity in response to food cues diminishes with reduced hunger for these individuals.

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  • The study focused on a specific dietary factor by controlling for calorie content, macronutrient composition, ingredient sources, and food form.

    “Third, we focused on a spe-cific dietary factor by controlling for calorie content, macronutrient composition, ingredient sources, and food form, instead of comparing grossly different foods (eg, cheesecake compared with vegetables) (6,10,31,32).”

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Authors
Dimitropoulos, A., Tkach, J., Ho, A., & Kennedy, J.
Affiliations
Case Western Reserve University (US)
Corresponding author
Dimitropoulos, Anastasia
Venue
Appetite
Publisher
Elsevier BV
Published
2012-02
Volume
58
Issue
1
Pages
303-312
ISSN
0195-6663 (ISSN-L)
OpenAlex
W1995809875
Cited by
151
References
44
Citations by year
2025: 9 · 2024: 5 · 2023: 8 · 2022: 14 · 2021: 7 · 2020: 16 · 2019: 10 · 2018: 15 · 2017: 13 · 2016: 19 · 2015: 7 · 2014: 14 · 2013: 7 · 2012: 7
FWCI
4.14
Type
journal article
Language
en
Open access
Locations
  • Appetite (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r03hd058766-02)
  • National Center for Research Resources (UL1RR024989)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R03 HD058766, R03HD058766-01)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
obesity, food cues, high-calorie foods, reward processing, lateral orbitofrontal cortex, caudate nucleus, anterior cingulate cortex, hunger, overweight adults
MeSH terms
Adolescent, Adult, Brain, Energy Intake, Cues, Eating, Female, Food, Humans, Hunger, Magnetic Resonance Imaging, Male, Obesity, Reward, Cluster Analysis, Young Adult

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