Related Experiment Video
Updated: Mar 15, 2026

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
Published on: October 15, 2019
Gut Microbiota: A Contributing Factor to Obesity
Steve M Harakeh1, Imran Khan2, Taha Kumosani3
1Special Infectious Agents Unit, King Fahd Medical Research Center, King Abdulaziz University Jeddah, Saudi Arabia.
Obesity is a global epidemic linked to cardiovascular diseases and diabetes. This review explores how gut microbiota (GM) and dysbiosis contribute to obesity, highlighting the need for further research.
Area of Science:
- Microbiology
- Metabolic Diseases
- Human Physiology
Background:
- Obesity is a growing global epidemic, increasing the risk of cardiovascular diseases (CVD) and diabetes.
- The human gut harbors trillions of microorganisms (gut microbiota, GM) that influence host physiology.
- Altered gut microbial composition (dysbiosis) is implicated in metabolic disorders, including obesity.
Purpose of the Study:
- To review the role of gut microbiota (GM) in the pathogenesis of obesity.
- To highlight the expanding research in obesity, driven by advances in nutrigenomics, metabolomics, and epigenetics.
Main Methods:
- Literature review of studies investigating the gut microbiota and obesity.
- Analysis of host-microbiota interactions in metabolic disease.
- Exploration of emerging technologies for interpreting microbiota-obesity causal relationships.
Main Results:
- Gut microbiota plays a significant role in host metabolism and energy balance.
- Dysbiosis, in conjunction with genetic and environmental factors, can contribute to obesity development.
- Advances in omics technologies are improving our understanding of microbiota's role in obesity.
Conclusions:
- Gut microbiota is a critical factor in obesity development and metabolic health.
- Further research is essential to elucidate the complex interactions between GM and obesity.
- Targeting the gut microbiota may offer novel therapeutic strategies for obesity and related diseases.
Related Concept Videos
Obesity
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Bacterial Flora of the Large Intestine
The normal gut flora of the colon plays a critical role in generating essential vitamins such as vitamins K, B5, and B7.
Irritable Bowel Syndrome I: Introduction
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion

