Related Experiment Video
Updated: Jan 7, 2026

Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies
Published on: May 6, 2022
Exploring the genetic link between obstructive sleep apnea and obesity: A bidirectional Mendelian randomization study
Fuguo Cai1, Wei Hong2, Chaoliang Xiong3
1Department of Otolaryngology Head and Neck Surgery & Shaanxi Provincial Key Laboratory for Precision Diagnosis and Treatment of Otorhinolaryngology, The Second Affiliated Hospital of Xi'an Jiaotong University, No. 157, West Fifth Road, Xi'an, Shaanxi, 710000, China; Department of Otorhinolaryngology-Head and Neck Surgery, Shangrao People's Hospital (Affiliated Shangrao Hospital to Nanchang University), Shangrao, Jiangxi 334000, China.
Obstructive sleep apnea (OSA) and obesity share a two-way causal link, supported by genetic evidence. Addressing both conditions together is key to managing their combined health impact.
Area of Science:
- Genetics
- Public Health
- Sleep Medicine
Background:
- Obstructive sleep apnea (OSA) and obesity are prevalent, interconnected health issues.
- The precise genetic relationship between OSA and obesity requires further elucidation.
Purpose of the Study:
- To investigate the bidirectional genetic causality between obstructive sleep apnea and obesity using Mendelian randomization (MR).
Main Methods:
- Utilized large-scale genetic data from FinnGen for OSA and GIANT consortium for obesity traits (BMI, WHR, WHRadjBMI).
- Employed Mendelian randomization with inverse variance weighting (IVW) as the primary analysis method.
- Conducted sensitivity analyses using weighted median and MR-Egger regression.
Main Results:
- Confirmed a causal link between OSA and increased body mass index (BMI), trunk fat, and whole-body fat.
- Demonstrated a causal association of BMI, trunk fat, and leg fat with OSA.
- Found no significant genetic association between waist-hip ratio (WHR) or WHRadjBMI and OSA.
Conclusions:
- Provided robust genetic evidence for a bidirectional causal relationship between OSA and obesity.
- Highlighted the importance of systemic and regional fat distribution in this relationship.
- Advocated for integrated management strategies addressing both weight reduction and OSA treatment.
More Related Videos
05:45Experimental Approach to Examine Leptin Signaling in the Carotid Bodies and its Effects on Control of Breathing
Published on: October 25, 2019
08:30Intraperitoneal Glucose Tolerance Test, Measurement of Lung Function, and Fixation of the Lung to Study the Impact of Obesity and Impaired Metabolism on Pulmonary Outcomes
Published on: March 15, 2018
Related Concept Videos
Sleep Apnea
The condition is more prevalent among...
Obesity
Pharmacokinetics in Obese Patients: Drug Absorption and Distribution
Drug Dosing: Obese Patients
Genome-wide Association Studies-GWAS
GWAS does not require the identification of the target gene involved in...
Pharmacokinetics in Obese Patients: Drug Metabolism and Excretion