Su Youn Nam*, Il Ju Choi‡, Kum Hei Ryu*, Bum Joon Park*, Hyun Bum Kim§ and Byung-Ho Nam∥
‡ Center for Gastric Cancer, National Cancer Center, Goyang, Korea
* Center for Cancer Prevention and Detection, National Cancer Center, Goyang, Korea
∥ Center for Clinical Trials, National Cancer Center, Goyang, Korea
§ Department of Radiology, National Cancer Center, Goyang, Korea
Conflicts of interest The authors disclose no conflicts.
Funding Supported by a grant (NCC 0810200) from the National Cancer Center, Korea, which had a role in the collection of the questionnaires and was financially responsible for the abdominal multidetector computed tomography.
Background & Aims
Data on the association between erosive esophagitis and obesity are inconsistent because of variations in study populations and methods used to determine obesity.
Participants in a prospective health-screening cohort underwent esophagogastroduodenoscopy and computed tomography. The association between erosive esophagitis and obesity (measured by body mass index [BMI], waist circumference, and abdominal visceral adipose tissue volume) was estimated with odds ratios (ORs) and 95% confidence intervals (CIs), adjusting for confounding factors. We also analyzed the association between obesity and erosive esophagitis by sex.
The prevalence of erosive esophagitis was 9.3% (495/5329). The OR for erosive esophagitis correlated with obesity measured by BMI, waist circumference, and abdominal visceral adipose tissue volume (P < .001 for each factor). The multivariate OR for erosive esophagitis was 1.97 (95% CI: 1.34-2.90) for a visceral adipose tissue volume of 500?999 cm3, 2.27 (95% CI: 1.51-3.39) for 1000?1499 cm3, and 2.94 (95% CI: 1.87-4.62) for ≥1500 cm3, compared with participants who had visceral adipose tissue volumes less than 500 cm3. When measures of obesity were analyzed simultaneously, abdominal visceral adipose tissue volume, but not BMI or waist circumference, was associated with erosive esophagitis. The 3 measures of obesity were significantly associated with erosive esophagitis in males, but only visceral adipose tissue volume was associated with erosive esophagitis in females (P = .002).
In contrast to BMI or waist circumference, abdominal visceral adipose tissue volume is associated with an increased risk of erosive esophagitis in males and females.
Keywords: Gastroesophageal Reflux Disease, Reflux Esophagitis, Visceral Fat, Abdominal Obesity
Abbreviations used in this paper: BMI, body mass index, CI, confidence interval, CT, computed tomography, GERD, gastroesophageal reflux disease, MRI, magnetic resonance imaging, OR, odds ratio