1989-2006年中国九省（区）居民膳食纤维摄入状况及其变化趋势

Trends of the dietary fiber intake among Chinese aged 18 -45 in nine provinces （autonomous region） from 1989 to 2006

目的 分析1989-2006年中国9个省（自治区）18～45岁健康居民膳食纤维的摄入状况、膳食纤维食物来源及其的变化趋势。方法以1989、1991、1993、1997、2000、2004和2006年中国健康与营养调查项目中连续3d24h回顾法膳食调查数据为基础。将有完整膳食调查资料的18～45岁健康居民作为研究对象，7轮调查的样本量分别为5597、5596、5323、5485、5308、4144和3889名。比较不同时间、性别、地区居民膳食纤维摄入量及其食物来源地变化趋势。结果9个省（自治区）18～45岁健康居民平均每天不溶性膳食纤维摄入量由1989年的15．1g／d下降到2000年的11．6g/d，总膳食纤维摄入量由22．6g／d下降到17．8g／d。2000年农村男女平均每天不溶性膳食纤维的摄入量分别比1989年减少5．1和5．2g（2000年分别为13．2、11．8g；1989年分别为18．3、17．0g），2006年农村男性和女性平均每天不溶性膳食纤维的摄入量分别为13．5和12．0g／d。1989-2006年间城市男性和女性平均每日不溶性膳食纤维摄入量分别波动在9．4～11．8g／d和8．3～10．8g／d，总膳食纤维的摄入量男性和女性分别波动在15．7-17．6和13。5～16．4g／d。城乡居民不溶性膳食纤维和总膳食纤维摄入量的差距呈现缩小的趋势。2006年70．6％（8．4／11．9）的不溶性膳食纤维来自蔬菜[（4．1±3．1）g／d]、面及其制品[（2．6±3．6）∥d]和米及其制品[（1．7±1．3）∥d]。结论1989-2006年9个省（自治区）居民膳食纤维摄人量旱现下降趋势。蔬菜、米、面及其制品是膳食纤维的主要食物来源。

Objective To analyze the status and trend of dietary fiber intake and its food sources among Chinese residents aged 18 -45 years old in 9 provinces （autonomous region）, from 1989 to 2006. Methods Twenty-four-hour dietary recall data of three consecutive days from China Health and Nutrition Survey （ 1989,1991 , 1993,1997,2000,2004 and 2006） were used. And the 18 - 45 years old subjects with complete information on dietary survey were included. The sample size of these 7 surveys were 5597,5596, 5323,5485,5308,4144 and 3889, respectively. The trends of dietary fiber intake and food sources by time and sex were studied. Results From 1989 to 2000,the total of daily dietary fiber intake of 18- 45 years old healthy residents decreased from 15. 1 g/d to 11.6 g/d, insoluble dietary fiber intake decreased from 22. 6 g/d to 17.8 g/d. In villages, from 1989 to 2000, the insoluble dietary fiber intake decreased 5.1 g/d in males and 5.2 g/d in females （ 13.2,11.8 g in 2000, respectively ; 18.3,17.0 g in 1989,respectively）. In 2006,the insoluble dietary intake was 12.6 g/d in males and 11.2 g/d in females in villages. In cities,from 1989 to 2006, the insoluble dietary fiber intake was 9.4 - 11.8 g/d in males and 8. 3 - 10. 8 g/d in females. The total dietary fiber intake was 15.7 - 17. 6 g/d in males and 13.5 - 16. 4 g/d in females. The difference of insoluble and total dietary fiber intake between city and village was decreasing. In 2006,70. 6% （8.4/11.9） insoluble dietary fiber came from vegetables（ （4. 1 ± 3.1 ） g/d）,wheat flour and its products （ （ 2. 6 ± 3.6 ） g/d）, rice and its products （ （ 1.7 ± 1.3 ） g/d）. Conclusion Dietary fiber intake among Chinese aged 18 -45 in 9 provinces （autonomous region） decreased from 1989 to 2006. Vegetables ,wheat flour, rice and their products were the major food sources of insoluble dietary fiber.