Research

Hormonal

Obesity induces chronic low-grade metabolic inflammation in adipose tissue, primarily through macrophage infiltration and the secretion of pro-inflammatory cytokines like TNF-alpha and IL-6, which directly causes insulin resistance and metabolic dysfunction.

Understanding that obesity creates a biological state of chronic inflammation helps explain why weight loss is difficult and why metabolic health declines. This is not a moral failing but a physiological response where fat tissue actively signals the body to store more fat and resist insulin. Treatments targeting this inflammation (like managing cytokine levels) may be necessary alongside lifestyle changes.

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Metabolic inflammation has been increasingly recognized as a unifying mechanism linking obesity to a broad spectrum of pathological conditions... Obesity causes a shift of macrophage subtypes in adipose tissue from M2 to M1 activation, leading to increased levels of proinflammatory cytokines and ROS, which induce insulin resistance.
Haiming Cao · Journal of Endocrinology · 2014

Why this rating

The paper is a comprehensive review citing decades of consistent mechanistic studies in mice and humans.

Source

Adipocytokines in obesity and metabolic disease

Haiming Cao · Journal of Endocrinology · 2014

DOI 10.1530/joe-13-0339

narrative_reviewCited 707×
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DOI resolved against Crossref · corpus check 2026-06-10

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