Vitamin B12 and Folate Status of a Selected Group of Free-Living Older Persons
作者:
BasuTapanK.,
DonaldElizabethA.,
HargreavesJohnA.,
ThompsonGordonW.,
OvertonThomasR.,
ChaoEunice,
PetersonDewey,
期刊:
Journal of Nutrition For the Elderly
(Taylor Available online 1993)
卷期:
Volume 11,
issue 4
页码: 5-19
ISSN:0163-9366
年代: 1993
DOI:10.1300/J052v11n04_02
出版商: Taylor&Francis Group
数据来源: Taylor
摘要:
Vitamin B12 and folate status was determined in 50 male and 47 female free-living subjects (65-77 years) in winter and summer. The mean intake calculated from 3-day food records met the Canadian recommended intake (RNI) for both gender and season, however, probability analysis of dietary data revealed a number of subjects at risk of deficiency. Although the mean plasma levels were within the acceptable range for both vitamins, some 9 to 14% of individual subjects had folate plasma levels below normal. Fewer subjects had subnormal plasma vitamin B12 levels. Although mean values for dietary intake and plasma concentration of folate and vitamin B12 may indicate nutritional adequacy, a proportion of an older population may be at nutritional risk.
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