Objective: To study the effects of vitamin a deficiency (VAD) on brain development, learning and memory ability in young rats.
目的：探讨维生素a缺乏(VAD)对幼鼠脑发育和学习记忆能力的影响。
Vitamin a deficiency is also a significant public health risk in Kiribati, the Marshall Islands, the Federated States of Micronesia and Papua New Guinea.
对基里巴斯、马绍尔群岛、密克罗尼西亚联邦和巴布亚新几内亚等国而言，维生素a缺乏也是一个重大公共卫生风险。
Results Sub-clinical prevalence rate is 6.46% and suspicious deficiency prevalence rate is 23.38%. Vitamin a deficiency with clinical manifestations is not found.
结果亚临床患病率为6.46%，可疑缺乏患病率为23.38%，未发现有临床表现的维生素a缺乏。
To assess the relationship between the prevalence of vitamin a deficiency among pregnant women and the effect of neonatal vitamin a supplementation on infant mortality.
评估孕妇维生素a缺乏症发生率和新生儿维生素a补充对婴儿死亡率的影响之间的关系。
In regions where at least 22% of pregnant women have vitamin a deficiency, giving neonates vitamin a supplements will have a protective effect against infant death.
在至少有22%的孕妇存在维生素a缺乏症的地区，让婴儿服用维生素a补品将可以起到预防婴儿死亡的作用。
In that light, aging itself might be seen as something treatable, the way you would treat high blood pressure or a vitamin deficiency.
从这个角度来看，衰老本身可能是可以治疗的，就像治疗高血压或维生素缺乏症那样。
In parts of South America, vitamin-A deficiency is a serious health problem, especially among children.
在南美部分地区，缺乏维生素 A是一个严重的健康问题，尤其在儿童之中。
“The cause of dementia is not vitamin D deficiency, ” said David Llewellyn, a research associate at Cambridge University and the study’s lead author.
这项研究报告的主要作者，剑桥大学的研究助理大卫卢埃林说：“老年痴呆症的原因并不是维生素D缺乏。
Vitamin D has become a very hot topic in medicine now as we are discovering very high levels of Vitamin D deficiency in our population, not only in the United States, but worldwide.
他说：“现在，我们发现不仅美国人缺乏维生素D的比例很高，全世界都是如此，因此维生素D成为医学界的热门话题。”
The integumentary system (which includes hair and nails) is often the first place that a serious vitamin deficiency shows up.
当维生素缺乏时，首先会变现在表皮系统（包括毛发和指甲）。
It gets harder to absorb vitamin B12 from food as you age, and a serious deficiency can look a lot like Alzheimer's disease.
随着年龄的增加，从食物中吸收维他命b 12变得更加困难，B12的严重不足会使你看起来像是患有老年痴呆症。
The new recommendations will provide a level of vitamin D that keeps people out of the deficiency range, she says.
她说，新的推荐将提供一个保持人们在缺乏范围之外的维生素D水平。
We need B vitamins for healthy nerves and brain cells, and feelings of anxiety may be rooted in a B vitamin deficiency.
我们要想维持健康的神经和脑细胞就需要B族维生素，而焦虑的感觉可能是源于B族维生素的缺乏。
This is because the vegan diet is rich in a vitamin called folate, which may mask deficiency in vitamin B-12 until severe problems occur.
这是因为严格素餐富含一种名为叶酸的维生素，它能够在检验中掩盖维生素b - 12的缺乏症状直到出现严重的病症。
The editorial notes that vitamin D supplements may simply be compensating for a deficiency that many people appear to have.
评论指出，补充维生素D可能仅仅是补偿了许多人都存在的维生素D的缺乏。
The weakness is caused by a deficiency of Vitamin C.
这种衰弱是由于缺乏维生素C而引起的。
According to the study, a few patients also experienced mild hair loss and iron deficiency which were treated with nutritional counseling and vitamin supplementation.
根据研究，一小部分人经历了温和的脱发和离子不足，可以给予营养咨询的处理和补充维生素。
We need B vitamins for healthy nerves and brain cells, and feelings of anxiety may be rooted in a B vitamin deficiency.
硭我们要想维持健康的神经和脑细胞就需要B族维生素，而焦虑的感觉可能是源于B族维生素的缺乏。
Vitamin C plays a critical role in health, and a prolonged deficiency leads to scurvy and eventually to death.
维生素C在维持健康方面起了重要的作用，长期缺乏将引起坏血病，最终导致死亡。
The newly recognized disease risks associated with vitamin D deficiency are clearly documented in a new report.
一个新的报告已经很清楚的论证了缺乏维他命D将会导致的疾病危险。
The newly recognized disease risks associated with vitamin D deficiency are clearly documented in a new report.
一个新的报告已经很清楚的论证了缺乏维他命D将会导致的疾病危险。
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