[Study on correlation between alcohol consumption and obesity in adults in China].

Objective: To evaluate the correlation between alcohol consumption and obesity in adults in China. Methods: The information about alcohol consumption were collected at the baseline survey of the China Kadoorie Biobank. The general obesity and central obesity were defined by BMI and waist circumference (WC) respectively. Logistic regression model was employed to examine the relationship of drinking behavior with general obesity and central obesity. Results: A total of 249 873 adults were included. A J-shaped relationship was observed between alcohol consumption and obesity measurement index (BMI and WC) in men. Compared with non-drinkers, the proportion of general obesity and central obesity were lower in light drinkers (men: OR=0.65, 95%CI: 0.59-0.71 and OR=0.93, 95%CI: 0.88-0.98; women: OR=0.77, 95%CI: 0.65-0.91 and OR=0.89, 95%CI: 0.80-0.99). In men, the proportion of general obesity and central obesity was highest in heavy drinkers (OR=1.21, 95%CI: 1.12-1.32; OR=1.33, 95%CI: 1.27-1.40). BMI and WC were higher in those with a drinking frequency of 3-5 d/week, with largest of proportion of central obesity (men: OR=1.23, 95%CI: 1.16-1.31; women: OR=1.13, 95%CI: 0.99-1.28). The risk for central obesity in men who began drinking every week before 20 years old was 1.24 times higher than non-drinkers (95%CI: 1.16-1.33). Those who drank beer had lower proportion of general obesity (men: OR=0.74, 95%CI: 0.67-0.82; women: OR=0.54, 95%CI: 0.43-0.68). Conclusion: The proportion of obesity was lower in light drinkers but higher in heavy drinkers; and the earlier drinking started, the higher the risk for obesity was.目的： 分析中国成年人不同饮酒行为与肥胖的关系。 方法： 本研究利用中国慢性病前瞻性研究基线调查数据，根据BMI和腰围（WC）分别划分一般性肥胖和中心性肥胖，采用logistic回归分析饮酒行为与一般性肥胖和中心性肥胖间的关系。 结果： 本研究纳入249 873名调查对象，男性饮酒量与BMI和WC间大体呈"J"形的曲线关系。以不饮酒者作为对照，少量饮酒组患一般性肥胖和中心性肥胖的比例较低，男性的OR值分别为0.65（0.59~0.71）和0.93（0.88~0.98），女性的OR值分别为0.77（0.65~0.91）和0.89（0.80~0.99）；男性大量饮酒组患一般性肥胖（OR=1.21，95%CI：1.12~1.32）和中心性肥胖（OR=1.33，95%CI：1.27~1.40）的比例最高。饮酒频率为3~5 d/周组的BMI和WC值较高，患中心性肥胖的比例也最高（男性：OR=1.23，95%CI：1.16~1.31；女性：OR=1.13，95%CI：0.99~1.28）。20岁前开始每周饮酒的男性患中心性肥胖的比例是不饮酒者的1.24倍（95%CI：1.16~1.33）。饮啤酒者患一般性肥胖的比例较低（男性：OR=0.74，95%CI：0.67~0.82；女性：OR=0.54，95%CI：0.43~0.68）。 结论： 少量饮酒患肥胖的比例较低，大量饮酒者患肥胖的比例较高，开始饮酒的年龄越早肥胖的比例越高。.