1992年和2002年《中国人群膳食和营养状况调查》结果显示,我国居民维生素A、B2和钙等营养素呈严重缺乏仅达国家膳食参考摄入量标准的63%和58%,而在老年人、 The results of the 1992 and 2002 surveys of dietary and nutritional status of the Chinese population showed that the country’s inhabitants were seriously deficient in nutrients such as vitamin A, B2, and calcium, which were only 63% and 58% of the national dietary reference intake standard, while in the elderly ,