Liraglutide reverses high-salt diet damage to visceral fat tissue structure and mitochondrial function in mice | Research

The takeaway

Chronic high-salt diet caused visceral adipose tissue dysfunction (↓adipocyte size, ↑collagen, ↓vascularization, mitochondrial stress, ↑leptin/↓adiponectin) in mice, with liraglutide treatment reversing structural damage, oxidative stress, and adipokine imbalance.

Salt damages fat, GLP-1 heals it
Liraglutide reversed high-salt-induced visceral adipose tissue fibrosis, oxidative stress, and adipokine imbalance—a new protective role for GLP-1 drugs

What the researchers found

HSD (15 weeks): ↓body weight/VAT mass, ↓adipocyte size, ↑collagen, ↓vascular density, mitochondrial stress, ↑oxidative stress, ↑leptin, ↓adiponectin. Liraglutide (5 weeks): reversed structural damage, ↓oxidative stress, normalized adipokines. C57BL/6 mice.

Why it matters

High salt intake is extremely common and damages fat tissue independently of blood pressure. Finding that GLP-1 drugs can reverse this damage provides a new rationale for their use in salt-sensitive metabolic dysfunction.

How the study worked

Male C57BL/6 mice: control vs 8% NaCl (HSD) for 15 weeks, then ± liraglutide for 5 weeks. VAT: histology, collagen, vascularization, mitochondrial dynamics, oxidative stress, adipokines.

What this study cannot tell us

Mouse model. 8% NaCl is very high. 5-week treatment period. Male mice only. Mechanism of GLP-1 fat tissue repair not fully elucidated.

How to read the evidence

Preclinical mouse study. Novel finding of GLP-1 adipose tissue repair.

When this study was published

Published in 2025.

The bigger picture

Salt-induced fat tissue dysfunction is an underrecognized driver of metabolic disease. GLP-1 drugs' ability to heal damaged adipose tissue adds to their growing repertoire of organ-protective effects.

Questions still open

Do GLP-1 drugs improve adipose tissue health in salt-sensitive hypertensive humans?
Is the adipose repair independent of weight loss?
Could dietary salt restriction enhance GLP-1 drug effectiveness?

Common questions

Does salt damage fat tissue?

Yes—independently of blood pressure. This study showed chronic high salt intake caused visceral fat to shrink, become fibrotic, lose blood vessels, develop mitochondrial stress, and produce abnormal hormone levels. These changes contribute to metabolic disease.

Can GLP-1 drugs repair salt-damaged fat?

In this mouse study, liraglutide treatment for just 5 weeks reversed many of the structural and metabolic changes in visceral fat caused by 15 weeks of high salt intake. This suggests GLP-1 drugs could help people with salt-sensitive metabolic dysfunction, even beyond their weight loss effects.

Read the original research

High Salt Intake Affects Visceral Adipose Tissue Homeostasis: Beneficial Effects of GLP-1 Agonists.

Biology, 14(9)

View on PubMed ↗Publisher’s paper ↗

Citation

Touceda, Vanessa; Cacciagiú, Leonardo; Moglie, Ignacio Barbani; Wiszniewski, Morena; Sanchez, Valeria; De Lucca, Romina C; Vidal, Agustina; Finocchietto, Paola; Friedman, Silvia; González, Germán E; Miksztowicz, Verónica. (2025). High Salt Intake Affects Visceral Adipose Tissue Homeostasis: Beneficial Effects of GLP-1 Agonists.. Biology, 14(9). https://doi.org/10.3390/biology14091171