Association between the Persistence of Obesity and the Risk of Gastric Cancer: A Nationwide Population-Based Study

Joo Hyun Lim, Cheol Min Shin, Kyung Do Han, Seung Woo Lee, Eun Hyo Jin, Yoon Jin Choi, Hyuk Yoon, Young Soo Park, Nayoung Kim, Dong Ho Lee

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Purpose There remains controversy about relationship between obesity and gastric cancer. We aimed to examine the association using obesity-persistence. Materials and Methods We analyzed a nationwide population-based cohort which underwent health check-up between 2009 and 2012. Among them, those who had annual examinations during the last 5 years were selected. Gastric cancer risk was compared between those without obesity during the 5 years (never-obesity group) and those with obesity diagnosis during the 5 years (non-persistent obesity group; persistent obesity group). Results Among 2,757,017 individuals, 13,441 developed gastric cancer after median 6.78 years of follow-up. Gastric cancer risk was the highest in persistent obesity group (incidence rate [IR], 0.89/1,000 person-years; hazard ratio [HR], 1.197; 95% confidence interval [CI], 1.117 to 1.284), followed by non-persistent obesity group (IR, 0.83/1,000 person-years; HR, 1.113; 95% CI, 1.056 to 1.172) compared with never-obesity group. In subgroup analysis, this positive relationship was true among those < 65 years old and male. Among heavy-drinkers, the impact of obesity-persistence on the gastric cancer risk far increased (non-persistent obesity: HR, 1.297; 95% CI, 1.094 to 1.538; persistent obesity: HR, 1.351; 95% CI, 1.076 to 1.698). Conclusion Obesity-persistence is associated with increased risk of gastric cancer in a dose-response manner, especially among male < 65 years old. The risk raising effect was much stronger among heavy-drinkers.

Original languageEnglish
Pages (from-to)199-207
Number of pages9
JournalCancer Research and Treatment
Issue number1
StatePublished - Jan 2022


  • Dose-response relationship
  • Obesity
  • Stomach neoplasms


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