National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands.
Am J Clin Nutr. 2010 Feb;91(2):329-36. doi: 10.3945/ajcn.2009.28191. Epub 2009 Dec 16.
Dietary fiber may play a role in obesity prevention. Until now, the role that fiber from different sources plays in weight change had rarely been studied.
Our aim was to investigate the association of total dietary fiber, cereal fiber, and fruit and vegetable fiber with changes in weight and waist circumference.
We conducted a prospective cohort study with 89,432 European participants, aged 20-78 y, who were free of cancer, cardiovascular disease, and diabetes at baseline and who were followed for an average of 6.5 y. Dietary information was collected by using validated country-specific food-frequency questionnaires. Multiple linear regression analysis was performed in each center studied, and estimates were combined by using random-effects meta-analyses. Adjustments were made for follow-up duration, other dietary variables, and baseline anthropometric, demographic, and lifestyle factors.
Total fiber was inversely associated with subsequent weight and waist circumference change. For a 10-g/d higher total fiber intake, the pooled estimate was -39 g/y (95% CI: -71, -7 g/y) for weight change and -0.08 cm/y (95% CI: -0.11, -0.05 cm/y) for waist circumference change. A 10-g/d higher fiber intake from cereals was associated with -77 g/y (95% CI: -127, -26 g/y) weight change and -0.10 cm/y (95% CI: -0.18, -0.02 cm/y) waist circumference change. Fruit and vegetable fiber was not associated with weight change but had a similar association with waist circumference change when compared with intake of total dietary fiber and cereal fiber.
Our finding may support a beneficial role of higher intake of dietary fiber, especially cereal fiber, in prevention of body-weight and waist circumference gain.
膳食纤维可能在预防肥胖方面发挥作用。到目前为止，很少有研究探讨不同来源的纤维在体重变化中所起的作用。
我们旨在研究总膳食纤维、谷物纤维和水果与蔬菜纤维与体重和腰围变化的相关性。
我们开展了一项前瞻性队列研究，纳入了 89432 名欧洲参与者，年龄 20-78 岁，基线时无癌症、心血管疾病和糖尿病，随访平均 6.5 年。通过使用经过验证的特定国家的食物频率问卷收集饮食信息。在每个研究中心进行多线性回归分析，并通过随机效应荟萃分析合并估计值。对随访时间、其他饮食变量以及基线人体测量、人口统计学和生活方式因素进行了调整。
总纤维与随后的体重和腰围变化呈负相关。与每天多摄入 10 g 总纤维相比，体重变化的 pooled 估计值为-39 g/y（95%CI：-71，-7 g/y），腰围变化的 pooled 估计值为-0.08 cm/y（95%CI：-0.11，-0.05 cm/y）。每天多摄入 10 g 谷物纤维与体重变化-77 g/y（95%CI：-127，-26 g/y）和腰围变化-0.10 cm/y（95%CI：-0.18，-0.02 cm/y）相关。水果与蔬菜纤维与体重变化无关，但与总膳食纤维和谷物纤维的摄入量相比，与腰围变化具有相似的相关性。
我们的发现可能支持更高膳食纤维摄入，尤其是谷物纤维摄入，对预防体重和腰围增加具有有益作用。
