Cited by 105Bariatric Surgery and OutcomesRegulation of Appetite and ObesityPharmacology and Obesity Treatment

Mechanisms responsible for excess weight loss after bariatric surgery

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Ionut, Viorica, Bergman, Richard N.·2011·Journal of Diabetes Science and Technology

Abstract

Obesity has increased alarmingly in the United States and is increasing in many countries of the world. Because obesity is an important risk factor for type 2 diabetes and other chronic diseases, it is important to develop approaches to counter the rapid increase in adiposity. One approach is bariatric surgery, the most successful clinical intervention known for treating obesity. Surgery can result in impressive weight loss and improvement of obesity-related comorbidities. Yet the mechanisms responsible for this remarkable effect of surgery remain controversial. It is now clear that caloric restriction, per se, does not explain all the reduction in stored fat mass after surgery. A number of gastrointestinal hormones, including glucagon-like peptide (GLP)-1, peptide YY, oxyntomodulin, GLP-2, glucose-dependent insulinotropic polypeptide, ghrelin, and others, can play roles in energy homeostasis and could be involved in bariatric-surgery-related weight loss and weight loss maintenance. Vagal innervation may play a role. In addition, there may be other yet-uncharacterized factors that could participate. This review discusses the possible roles of these hormonal mechanisms in various types of bariatric surgery to help elucidate some of the potential mechanisms at play in short-term and long-term post-bariatric surgery weight loss. Understanding such mechanisms could lead to new and efficacious means to control or even reduce the epidemic of obesity.

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Authors
Ionut, V., & Bergman, R. N.
Affiliations
Cedars-Sinai Medical Center (US)
Corresponding author
Ionut, Viorica
Venue
Journal of Diabetes Science and Technology
Published
2011-09
Volume
5
Issue
5
Pages
1263-1282
ISSN
1932-2968 (ISSN-L)
OpenAlex
W2123193625
Cited by
105
References
181
Citations by year
2026: 5 · 2025: 10 · 2024: 9 · 2023: 7 · 2022: 7 · 2021: 10 · 2020: 6 · 2019: 9 · 2018: 9 · 2017: 6 · 2016: 7 · 2015: 4 · 2014: 6 · 2013: 8 · 2012: 2
FWCI
5.23
Type
journal article
Language
en
Open access
Locations
  • Journal of Diabetes Science and Technology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R37DK027619, R01DK029867, DK27619, DK29867)
Topics
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Health Sciences › Medicine › Pharmacology › Pharmacology and Obesity Treatment
Keywords
bariatric surgery, weight loss mechanisms, obesity, gastrointestinal hormones, glucagon-like peptide-1, peptide YY, oxyntomodulin, glucagon-like peptide-2, glucose-dependent insulinotropic polypeptide, ghrelin, energy homeostasis, vagal innervation, weight loss maintenance, type 2 diabetes
MeSH terms
Gastrointestinal Hormones, Humans, Obesity, Weight Loss, Bariatric Surgery

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