[Trend on Vitamin C Intake among Chinese Population Aged 50 - 79 Years in 9 Provinces, from 1991 to 2009]
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OBJECTIVE: To analyze the trend of dietary vitamin C intake and its food sources among Chinese population aged 50-79 years old in 9 provinces, from 1991 to 2009. METHODS: Data on twenty-four-hour dietary recall from China Health and Nutrition Survey (1991, 1993, 1997, 2000, 2004, 2006 and 2009) was used to identify the trends in vitamin C intake among Chinese population aged 50-79 years old. RESULTS: Totally, 24,321 adults were assessed among 7 round surveys, including 11,739 males (48.3%) and 12,582 females (51.7%). From 1991 to 2009, the intake of vitamin C was reduced by 12.1 mg and 11.8 mg in rural male and female respectively; and the intake of vitamin C increased by 8.7 mg and 10.2 mg in urban males and females, respectively. Intake of vitamin C from the dark-color vegetables decreased by 15.1 mg and 13.9 mg in rural males and females, and it was increased first then decreased in both urban males and females. Vitamin C from the light-color vegetables kept stable during the 18 years. The intake of vitamin C in the southern residents aged 50-79 year-olds was significantly higher than that of the northern residents (except for 1997). The proportion that vitamin C intake reached to Chinese RNI were 19.8%-30.4% (urban males), 31.1%-43.9% (rural males), 15.9%-24.9% (urban females), and 26.4%-38.1% (rural females) respectively. CONCLUSION: The present study indicated that the changing of vitamin C intake was different between urban and rural residents aged 50-79. The amount of vitamin C intake between urban and rural residents was gradually getting closer. However, the intake of vegetables and fruit was not sufficiency.
JOUR
Ma, Yuxia
Zhang, Bing
Wang, Huijun
Du, Wenwen
Su, Chang
Zhang, Jiguo
Zhang, Ji
Zhai, Feng-ying
2012
Zhonghua Liu Xing Bing Xue Za Zhi
33
5
496-500
2012/08/14
0254-6450 (Print) 0254-6450 (Linking)
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