Vitamin B12 status of vegetarians in Shanghai

Q4 Nursing

中华临床营养杂志 Pub Date : 2019-04-30 DOI:10.3760/CMA.J.ISSN.1674-635X.2019.02.008

Xueying Cui, Bian Wang, Youmei Wu, Luyao Xie, Q. Tang

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引用次数: 1

Abstract

Objective To investigate the vitamin B12 status of vegetarians in Shanghai. Methods A total of 282 adult vegetarians and 282 omnivores matching by gender and age were recruited in Shanghai. Their dietary intakes were collected. The serum concentrations of vitamin B12, folate and homocysteine were tested. The red blood cell, hematocrit value, mean corpuscular volume and mean erythrocyte width were also examined. Results The daily average intake of dietary vitamin B12 was(0.46±1.01) μg/d in vegetarians and only (0.1±0.46) μg/d in vegans, which was lower than that of omnivores [(3.91±6.92)μg/d, F=50.57, P<0.01] . 137 omnivores and 274 vegetarians had less dietary vitamin B12 level than recommended nutrient intake (RNI) and the difference was statistically significant (χ2=114.77, P<0.01). 54.26% of vegetarians, 68.92% vegans, 49.04% ovo-lacto vegetarians and 15.60% omnivores had hyperhomocysteinemia and the differences between vegetarians and omnivores were statistically significant (all P<0.01). After adjusting the confounding factors the hematocrit value was higher in vegetarians, vegans and ovo-lacto vegetarians than in omnivores(27.42%±18.32%, 28.73%±18.19%, 26.95%±18.38% vs. 8.96%±16.59%, P<0.01). Vegans had lower red blood cell counts and higher hematocrit value and mean corpuscular volume than omnivores. Conclusion Vitamin B12 deficiency combined with an elevated level of homocysteine and red blood cell volume growth are common but serious issue in vegetarians, especially in vegans. Key words: Vegetarian; Vitamin B12; Red blood cell; Homocysteine; Folate

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上海市素食者维生素B12状况分析

目的了解上海市素食人群维生素B12的状况。方法在上海市招募282名成年素食者和282名按性别和年龄匹配的杂食动物。收集了他们的饮食摄入量。检测血清中维生素B12、叶酸和同型半胱氨酸的浓度。同时测定红细胞、红细胞压积值、红细胞平均体积和红细胞平均宽度。结果素食者日平均维生素B12摄入量为（0.46±1.01）μ，低于杂食动物[（3.91±6.92）μg/d，F=50.57，P<0.01]。137名杂食动物和274名素食者的膳食维生素B12水平低于推荐营养素摄入量（RNI），差异具有统计学意义（χ2=114.77，P<0.01），49.04%的蛋乳素食者和15.60%的杂食者存在高同型半胱氨酸血症，素食者和杂食者之间的差异具有统计学意义（均P<0.01），纯素食者和蛋乳素食者的红细胞计数低于杂食者（27.42%±18.32%，28.73%±18.19%，26.95%±18.38%对8.96%±16.59%，P<0.01）。结论维生素B12缺乏与同型半胱氨酸水平升高和红细胞体积增长相结合是素食者，尤其是纯素食者常见但严重的问题。关键词：素食主义者；维生素B12；红细胞；同型半胱氨酸；Folate

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来源期刊

中华临床营养杂志 Nursing-Nutrition and Dietetics

CiteScore

0.20

自引率

0.00%

发文量

2282

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