Background: Few studies have investigated the association between smoking and ultrasonographically diagnosed gallbladder (GB) disease, and their results were uncertain. This study was conducted to examine the association between smoking and drinking and GB diseases.
Methods: A total of 9,947 subjects (age, 30-69 years; 4,953 men and 4,994 women) voluntarily received a paid medical check-up at our center in Yamanashi Prefecture in Japan. All of the subjects underwent abdominal ultrasonographic (US) examination, a demographic check, and a biochemical test, and answered a self-administered questionnaire asking about smoking habits and alcohol consumption. Of the 9,947 subjects, 483 had gallstones, 819 had gallbladder polyps, and 169 were in a state of postcholecystectomy. We compared the findings in this group with the findings in 8,417 people (4,144 males and 4,273 females) with normal gallbladder.
Results: Multiple regression analysis among males showed that cigarette smoking was inversely related to GB polyps (odds ratio, [OR], 0.76; 95% confidence internal [CI], 0.59-0.98 and OR, 0.74; 95% CI, 0.56-0.98, respectively, for current and ex-smokers). Ex-smokers a showed positive association with the postcholecystectomy state (OR, 2.56; 95% CI, 1.18-5.52). Light drinkers showed an inverse relation to GB stones (OR, 0.69; 95% CI, 0.49-0.99), and heavy drinkers showed an inverse relation to GB polyps (OR, 0.68; 95% CI, 0.51-0.90). Current drinkers showed an inverse relation to the postcholecystectomy state (OR, 0.48; 95% CI, 0.28-0.83).
Conclusions: Cigarette smoking was inversely related to gallbladder polyps in males and was positively related to the postcholecystectomy state. Drinking was inversely related to gallstones, GB polyps, and the postcholecystectomy state in males.
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