Cited by 381Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismCardiovascular Disease and Adiposity

Obesity and inflammation: the effects of weight loss

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Forsythe, L. Kirsty, Wallace, Julie M. W., Livingstone, M. Barbara E.·2008·Nutrition Research Reviews

Abstract

Following the discovery of TNF-α and leptin as secretory products of adipocytes in the early 1990s, subsequent obesity research focused on the new functional role of adipose tissue, as an active endocrine organ. Many more inflammatory peptides have been linked to adiposity, which ultimately characterised obesity as a state of low-grade systemic inflammation, or ‘metaflammation’ which may link obesity to its co-morbidities. The aim of the present review is to examine the effects of weight loss on inflammation in overweight and obese, but otherwise healthy, populations. Studies were broadly classified into four types (diet, physical activity, diet and physical activity combined, and surgical interventions) and discussed according to the method used to induce weight loss. All studies measured at least one obesity-related inflammatory marker (ORIM). The overall finding from the present review is that weight loss does improve inflammation in terms of both the inflammatory (C-reactive protein, TNF-α, IL-6 and leptin) and anti-inflammatory (adiponectin) ORIM. Within this, the greatest improvements in ORIM are observed in studies achieving a weight loss of at least 10 %. However, a number of methodological issues have been identified as potential limitations within the literature including the sex and age of subjects, sample size, study duration and the assessment of body composition. In conclusion, although a period of weight loss per se is capable of reversing the unfavourable inflammatory profile evident in the obese state, further studies are required to determine the time needed, in which a reduced weight is maintained, in order to benefit from improved inflammatory status long term.

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  • Obesity activates macrophages, mast cells and T lymphocytes, producing low-level inflammation and secretion of TNF, leptin and growth hormone.

    “Obesity activates macrophages, mast cells and T lymphocytes, promoting a low-level inflammation that results in the secretion of tumour necrosis factor (TNF), leptin and growth hormone (GH)57–59.”

    From Sarcopenic obesity in older adults: aetiology, epidemiology and treatment strategies (2018) · cites this paper as [58]

    The Introduction describes obesity as low-grade systemic inflammation and identifies TNF-α and leptin as adipose-tissue secretory products. It mentions macrophages and mast cells as possible contributors to inflammation, but does not establish their activation; the passages do not support the added claims about T lymphocytes or growth hormone. Page numbers were not available in our copy. (LLM, conf=0.88)

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Authors
Forsythe, L. K., Wallace, J. M. W., & Livingstone, M. B. E.
Affiliations
University of Ulster (GB)
Corresponding author
Livingstone, M. Barbara E.
Venue
Nutrition Research Reviews
Published
2008-12
Volume
21
Issue
2
Pages
117-133
ISSN
  • 0954-4224 (ISSN-L)
  • 1475-2700
OpenAlex
W2162846451
Cited by
381
References
132
Citations by year
2026: 12 · 2025: 20 · 2024: 21 · 2023: 21 · 2022: 23 · 2021: 21 · 2020: 28 · 2019: 23 · 2018: 25 · 2017: 15 · 2016: 17 · 2015: 19 · 2014: 28 · 2013: 22 · 2012: 34
FWCI
1.79
Type
journal article
Language
en
Open access
Locations
  • Nutrition Research Reviews (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
Keywords
obesity, weight loss, low-grade inflammation, metabolic inflammation, adipose tissue endocrine function, adipokines, TNF-α, leptin, adiponectin, C-reactive protein, interleukin-6, diet, physical activity, bariatric surgery, weight loss maintenance
MeSH terms
Adipose Tissue, Adult, Body Composition, Diet Therapy, Diet, Reducing, Female, Humans, Inflammation, Male, Middle Aged, Biomarkers, Weight Loss, Exercise, Adipocytes, Bariatric Surgery, Overweight

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