1991-2009年中国九省区膳食营养素摄入状况及变化趋势(六)18～49岁成人膳食钙摄入量及变化趋势

THE NUTRIENTS INTAKE TREND OF CHINESE POPULATION IN NINE PROVINCES FROM 1991 TO 2009 (Ⅵ) CALCIUM INTAKE TREND IN CHINESE ADULTS AGED 18-49 YEARS

目的 了解1991-2009年中国18～49岁成人钙摄入状况、钙的食物来源及变化趋势。方法 选取1991年～2009年“中国居民健康与营养调查”七轮调查中18～49岁成年居民作为本次研究对象,按地区分层纵向分析历年来成人钙摄入量水平、钙食物来源分布及变化趋势。结果 1991-2009年间,我国成人平均每日钙摄入量总体呈上升趋势,2009年成年男性钙摄入量为415.3mg/d,成年女性钙摄入量为367.3mg/d;2009年城市、郊区、城镇、农村四类地区成年男性钙摄入量达到推荐的适宜摄入量(AI)的比例为6.6%、6.6%、2.8%和4.3%,成年女性钙摄入量达到AI的比例为2.8%、3.6%、2.6%和2.1%。钙的食物来源主要为蔬菜、豆类、谷类,三类食物提供的钙占70%以上,奶类食物提供的钙在4%以下。结论 在过去的近20年间,我国18～49岁成人钙摄入水平仍然较低,奶类、豆类等钙的优质食物来源提供钙的比例偏低是钙摄入不足的主要原因。

Objective To understand calcium intake and its food sources,as well as its trend in Chinese 18-49 years old adults.Method The data of daily calcium intake and its distribution of food sources in 18-49 aged old adults in Chinese Health and Nutrition Survey（CHNS） during 1991 to 2009 were utilized for analysis.Results The average intakes of calcium in Chinese males and females were 415.3 g/d and 367.3g/d respectively in 2009,showing an increasing trend since 1991.The percentages of individuals taking calcium daily over AI were 6.6%,6.6%,2.8% and 4.3% among males and 2.8%,3.6%,2.6%,and 2.1% among females in city,suburb,town and village respectively.The main food sources of dietary calcium were vegetables,legumes and cereals,which accounted together over 70% of the total daily intake.However,the calcium from dairy foods only attributed to 4% of the total daily calcium intake.Conclusion During last 20 years,the average daily calcium intake of Chinese adults still remained at low level.Deficient intake of calcium from dairy and legumes mainly accounted for the low intake of calcium.