最新膳食纤维与体重控制教学讲义PPT课件.ppt

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1、膳食纤维与体重控制膳食纤维与体重控制Dietaryfiberandweightmanagement膳食纤维摄入量与体重、体脂呈负相关Mostbutnotallobservationalstudiesshowedaninverse,sometimesdose-dependentrelationshipbetweenDFconsumptionandbodyweight水溶性膳食纤维和非水溶性膳食纤维富含膳食纤维的天然食物和膳食纤维制剂Generally,inhumanstudies,nocleardifferenceregardingweightgainhasbeenshow

2、nbetweensolubleandinsolubleDFandfermentableandnonfermentableDF,orbetweenfoodsnaturallyhighinDFandfibersupplementsEpidemiologicsupportthatDFintakepreventsobesityisstrong对体重控制效果类似膳食纤维与体重控制Dietaryfiberandweightmanagement膳食纤维控制体重的可能机制1含亲水基团，吸水膨胀性饱腹感2粘性、吸附性延缓饥饿感34减少营养素吸收5改变肠道激素分泌在大肠内发酵代谢提供能量较少

3、Interventionstudies：theadditionofdietaryfibergenerallydecreasesfoodintakeand,hence,bodyweight.Mechanisms：InducinggreatersatiationandsatietyDecreasingabsorptionofmacronutrientsAlteringsecretionofguthormonesDecreasinginenergyintakeandbodyweightlossmechanisms治疗组（n=129）：补充膳食纤维12～18g/d国内其他研究：膳

4、食纤维对肥胖儿童的治疗作用进食量、摄入总热量、饥饿感、尿D-木糖排出量粪便排泄空腹胰岛素、甘油三酯、胆固醇血红蛋白、血清铜锌浓度无显著差异身高增长无显著差异体重、腰围、臀围、腰围/臀围、腰围/身高、BMIBMI下降程度与膳食纤维食用量高度相关10d后2m后6m后StudyofDFinpediatricsinChina(11/02)ScientificAdvisoryCommitteeonNutrition(SACN)statementondietary(12/06/08):Thereisnoevidenceforanassociationoffibreintakeonwe

5、ightchangeinchildren世界各国对膳食纤维的推荐摄入量不同AdeclineinDFintake膳食纤维摄入的现状PresentsituationofDietaryfiberintakeAmericanChina中国传统饮食习惯富含膳食纤维生活水平提高，日常饮食结构改变膳食纤维摄入量减少美国调查研究：成人膳食纤维摄入量约仅达推荐量的50%TheaveragefiberintakeofadultsintheUnitedStates（15g/day）isapproximatelyhalftherecommendedlevels（AmericanHeartAsso

6、ciationrecommendationof25-30g/day)AdeclineintotalDFintakeandDFdensityispredictedforChinainthefuture.Thismaybeduetothemarkedchangesinthedietaryhabitsoftheyoungergeneration,andisaproblematictrendforChinesehealth.膳食转型期发展中国家1.继续保持优良的传统饮食习惯2.整个生命周期注重摄入富含膳食纤维的全谷类、豆类和蔬菜水果类等食物对中国超重/肥胖、心脑血管病的预防有很深

7、远的意义Increasingconsumptionofdietaryfiberwithfruits,vegetables,wholegrains,andlegumesacrossthelifecycleisacriticalstepinstemmingtheepidemicofobesityinChina，alsomayhelptodecreasetheprevalenceofcardiovasculardiseaseandT2DM中国饮食与膳食纤维ChinesecuisineandDietaryfiberThehealthb