School of Exercise and Nutrition Sciences, Queensland University of Technology (QUT), Victoria Park Rd, Kelvin Grove, QLD4059, Australia.
Woolworths Centre for Childhood Nutrition Research, Faculty of Health, Queensland University of Technology (QUT), South Brisbane, Australia.
Public Health Nutr. 2021 Oct;24(14):4397-4407. doi: 10.1017/S1368980021001695. Epub 2021 Apr 20.
(i) To examine demographic and health characteristics of women of reproductive age on a vegan diet in Australia and compare these to the general population; (ii) to identify sources and intake of vitamin B12 and compare intake to current recommendations and (iii) examine associations between participant characteristics and adequacy of vitamin B12 intake.
In this cross-sectional study, data were collected via an online survey. Demographic and health characteristics of women on a vegan diet were compared with women in the general population (using Australian Bureau of Statistics data). Intake of vitamin B12 was estimated using a FFQ and estimation of supplemental intake.
Australia.
Participants (n 1530) were women aged 18-44 years who had been on a vegan diet for at least 6 months.
While BMI, smoking habits and intakes of fruit and vegetables compared favourably with the general population, 26 % of respondents had estimated intakes of vitamin B12 below recommendations. Analyses of relationships between vitamin B12 intake and participant characteristics revealed that the strongest predictor of intake was supplementation (P < 0·001); however, 25 % had not supplemented with vitamin B12 in the past 3 months.
The vitamin B12 intakes of a substantial proportion of Australian women of reproductive age consuming a vegan diet do not meet the recommended intake, which could adversely affect their health, and, if they are pregnant or lactating, that of their infants too. There is a need for further research in this area to identify effective strategies to address this situation.
（i）研究澳大利亚生育年龄的素食女性的人口统计学和健康特征，并将其与一般人群进行比较；（ii）确定维生素 B12 的来源和摄入量，并与当前建议进行比较；（iii）研究参与者特征与维生素 B12 摄入量充足之间的关系。
在这项横断面研究中，通过在线调查收集数据。将素食女性的人口统计学和健康特征与一般人群（使用澳大利亚统计局数据）进行比较。使用 FFQ 估计维生素 B12 的摄入量，并估计补充剂的摄入量。
澳大利亚。
参与者（n=1530）为年龄在 18-44 岁之间，素食至少 6 个月的女性。
虽然 BMI、吸烟习惯以及水果和蔬菜的摄入量与一般人群相比表现良好，但有 26%的受访者估计维生素 B12 的摄入量低于建议摄入量。分析维生素 B12 摄入量与参与者特征之间的关系表明，摄入量的最强预测因素是补充剂（P<0.001）；然而，过去 3 个月内有 25%的人没有补充维生素 B12。
相当一部分澳大利亚生育年龄的素食女性的维生素 B12 摄入量不符合建议摄入量，这可能会对她们的健康产生不利影响，如果她们处于怀孕或哺乳期，也会对婴儿的健康产生不利影响。需要在这一领域进行进一步的研究，以确定解决这一问题的有效策略。
