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KMID : 0988920200180010121
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Intestinal Research
2020 Volume.18 No. 1 p.121 ~ p.129
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Vegetarianism as a protective factor for asymptomatic colonic diverticulosis in Asians: a retrospective cross-sectional and case-control study
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Bong Ji-Hun
Kang Hyoun-Woo
Cho Hye-Ki
Nam Ji-Hyung
Jang Dong-Kee
Kim Jae-Hak
Lee Jun-Kyu
Lim Yun-Jeong
Koh Moon-Soo
Lee Jin-Ho
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Abstract
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Background/Aims: Dietary fiber intake is considered a protective factor for diverticular disease such as diverticulitis. However, evidence for an inverse connection between dietary fiber consumption and asymptomatic colonic diverticulosis is lacking. Specifically, few studies have investigated this subject in Asians with different presentations of diverticulosis. Therefore, we assessed the protective effects of a vegetarian diet for asymptomatic colonic diverticulosis in Buddhist monks who are obligatory vegetarians for spiritual reasons compared with the general population.
Methods: A retrospective, cross-sectional, case-control study was conducted in age- and sex-matched Buddhist monks and the general population who underwent colonoscopy for screening at a Korean health promotion center from August 2005 to June 2018. We compared the prevalence of asymptomatic diverticulosis between the 2 groups using a self-administered questionnaire.
Results: In this study, a total of 1,316 individuals were included (Buddhist monks of 658 and general population of 658) with a mean age of 52.6±9.5 years. The prevalence of asymptomatic diverticulosis in Buddhist monks was lower compared with the general population (6.7% [44/658] vs. 10.8% [71/658], P=0.008). Buddhist monks had a higher rate of high body mass index (BMI) and metabolic syndrome. By a multivariate regression analysis model, a nonvegetarian diet (odds ratio [OR], 1.82; 95% confidence interval [CI], 1.21?2.72, P=0.004), old age (OR, 4.53; 95% CI, 1.36?15.12; P=0.014), male sex (OR, 1.91; 95% CI, 1.28?2.85; P=0.002), and a high BMI (OR, 1.50; 95% CI, 1.01?2.23; P=0.047) were independent predictors of asymptomatic diverticulosis. Moreover, a nonvegetarian diet was associated with both right-sided and left-sided diverticulosis.
Conclusions: A nonvegetarian diet may increase a risk of asymptomatic colonic diverticulosis in Asians.
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KEYWORD
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Diet, vegetarian, Buddhism, Asymptomatic, Diverticulosis
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