Can Pineapple Enzyme Bromelain Help the Brain Control Appetite in Obesity?
Bromelain partially reversed obesity-related disruptions in brain energy-regulating pathways in rats fed a high-fat diet.
Quick Facts
What This Study Found
Bromelain restored GLUT2 and normalized POMC and IGF1R expression in hypothalamic tissue of obese rats.
Key Numbers
- 36 male Wistar rats in 4 groups of 9
- Bromelain dose: 200 mg/kg/day orally for 1 month
- GLUT2 downregulated by HFD, significantly restored by bromelain
- POMC elevated by HFD, normalized by bromelain
- IGF1R elevated by HFD, reduced by bromelain
- NPY and FGF2: no significant changes with bromelain
How They Did This
Preclinical study in 36 male Wistar rats across 4 diet/treatment groups with hypothalamic ELISA analysis.
Why This Research Matters
Central (brain) regulation of appetite and metabolism is disrupted in obesity. Natural compounds that restore this regulation could complement weight-loss therapies.
The Bigger Picture
Natural anti-inflammatory compounds like bromelain may offer complementary approaches to managing obesity by acting on brain metabolic pathways.
What This Study Doesn't Tell Us
Animal study with a small number of subjects per group. Short treatment duration. Cannot be directly translated to human obesity treatment.
Questions This Raises
- ?Would bromelain show similar brain effects in humans?
- ?Could bromelain enhance the effects of GLP-1 receptor agonists?
Trust & Context
- Key Stat:
- Restored GLUT2 Bromelain reversed the high-fat diet-induced downregulation of glucose transporter 2 in the hypothalamus
- Evidence Grade:
- Preclinical animal study. Interesting but early-stage. Human relevance needs investigation.
- Study Age:
- Published in 2025.
- Original Title:
- Bromelain Improves Hypothalamic Control of Energy Homeostasis in High-Fat Diet-Induced Obese Rats.
- Published In:
- Current issues in molecular biology, 47(8) (2025)
- Database ID:
- RPEP-12904
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
Can bromelain help with weight loss?
In rats, bromelain partially restored brain pathways disrupted by high-fat diets. Whether this translates to meaningful weight loss in humans is unknown.
What is bromelain?
A mix of proteolytic enzymes derived from pineapple stems and fruit, known for anti-inflammatory and digestive properties.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-12904APA
Ozen Koca, Raviye; Basaran, Mustafa Berk; Solak, Hatice; Solak Gormus, Zulfikare Isik. (2025). Bromelain Improves Hypothalamic Control of Energy Homeostasis in High-Fat Diet-Induced Obese Rats.. Current issues in molecular biology, 47(8). https://doi.org/10.3390/cimb47080607
MLA
Ozen Koca, Raviye, et al. "Bromelain Improves Hypothalamic Control of Energy Homeostasis in High-Fat Diet-Induced Obese Rats.." Current issues in molecular biology, 2025. https://doi.org/10.3390/cimb47080607
RethinkPeptides
RethinkPeptides Research Database. "Bromelain Improves Hypothalamic Control of Energy Homeostasi..." RPEP-12904. Retrieved from https://rethinkpeptides.com/research/ozen-2025-bromelain-improves-hypothalamic-control
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.