Related Experiment Video
Updated: Jun 14, 2026

Quantitative Polymerase Chain Reaction-based Analyses of Murine Intestinal Microbiota After Oral Antibiotic Treatment
Published on: November 17, 2018
Antibiotics, gut microbiome and obesity
Karen S W Leong1, José G B Derraik1,2,3, Paul L Hofman1
1Liggins Institute, University of Auckland, Auckland, New Zealand.
Antibiotics may contribute to obesity by disrupting the gut microbiome. While animal studies show a link, human evidence is inconclusive, requiring more research on antibiotic effects and obesity development.
Area of Science:
- Microbiology
- Human Health
- Pharmacology
Background:
- Antibiotics have significantly reduced infectious disease mortality.
- Increasing antibiotic use raises concerns about resistance and long-term health effects, including obesity.
- The gut microbiome is implicated in various chronic conditions, including obesity.
Purpose of the Study:
- To review the association between antibiotic use and obesity.
- To explore the role of the gut microbiome in this relationship.
Main Methods:
- Literature review focusing on studies examining antibiotics, gut microbiome, and obesity.
- Analysis of evidence from animal models and human clinical trials.
Main Results:
- Strong evidence links antibiotic use to obesity development in animal models.
- Human studies show an association, but the evidence remains inconclusive.
Conclusions:
- Antibiotics may play a role in obesity development, potentially via gut microbiome disruption.
- Further well-designed clinical trials are necessary to confirm the link between antibiotics and human obesity.
Related Concept Videos
Introduction to the Human Microbiota
Development of Human Microbiota
Functions of the Gut Microbiota
Dysbiosis of the Gut Microbiota
Gut-Brain Axis
Microbiota Modulation by Antibiotics

