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Sunday, June 5, 2011

Age-Dependent Inverse Association Between Alcohol Consumption and Obesity in Japanese Men



The aim of this study was to determine whether age influences the relationship between alcohol drinking and obesity. 

Japanese men receiving periodic health checkups (20–70 years old, n = 36,121) were divided into non-, light (<22 g ethanol/day), moderate (≥22 and <44 g ethanol/day), and heavy (≥44 g ethanol/day) drinkers. Relationships between alcohol intake and obesity-related indices were compared among the quartiles of age.

BMI was lower in light and moderate drinkers than in nondrinkers, and these differences were more prominent in the 1st and 2nd quartiles of age than in the higher quartiles. 

In the 1st and 2nd quartiles of age, waist circumference and waist-to-height ratio were significantly smaller and lower, respectively, in light and moderate drinkers than in nondrinkers, and these differences were less prominent in the 3rd quartile and were not found in the 4th quartile. 

In the 1st and 2nd quartiles of age, odds ratios vs. nondrinkers for large waist circumference were significantly low (P < 0.01) in light drinkers (1st quartile: 0.64 (0.54–0.75); 2nd quartile: 0.69 (0.60–0.80)) and moderate drinkers (1st quartile: 0.69 (0.61–0.78); 2nd quartile: 0.84 (0.76–0.93)), whereas the odds ratio was significantly low (P < 0.05) only in light drinkers in the 3rd quartile (0.84 (0.73–0.97)) and was not significant in any drinker groups of the 4th quartile. 

The results suggest that alcohol consumption is associated with lower risk of obesity in Japanese men and this association is more prominent in younger men than in older men.



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