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Sustained, Effortless Weight Loss after Damage to the Left Frontoinsular Cortex: A Case Report
Journal article   Open access   Peer reviewed

Sustained, Effortless Weight Loss after Damage to the Left Frontoinsular Cortex: A Case Report

Benjamin D. Reasoner, Aaron D. Boes and Joel C. Geerling
Case reports in neurology, Vol.15(1), pp.63-68
03/28/2023
DOI: 10.1159/000529533
PMCID: PMC10051042
PMID: 37006817
url
https://doi.org/10.1159/000529533View
Published (Version of record) Open Access

Abstract

This case report highlights a possible consequence of damage to the left frontoinsular region. A 53-year-old woman with chronic obesity and headaches presented with seizure, leading to the discovery and resection of a large sphenoid wing meningioma. Postoperative brain imaging revealed loss of the left frontoinsular cortex and portions of the underlying white matter, claustrum, and striatum. Throughout her adult life, this patient had tried and failed to lose weight, but after surgery, she no longer desired to eat large meals, and without effort, her body mass index decreased from 38.6 (85th percentile) to 24.9 (25th percentile). Combined with previous research implicating the insular cortex in interoception, appetite, and drug-related urges, her reduced hunger and effortless weight loss after resection of the left frontoinsular cortex suggest that this region of the human brain may play a role in hunger-related urges that contribute to overeating.
Obesity Appetite Insula of Reil Insular cortex Interoception Single Case – General Neurology

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