(Your body normally manufactures Vitamin D with the help of sunlight.) Prolonged deficiency can cause bone and muscle weakness, but two months probably isn't enough to do long-term damage.
尽管医疗队一直在给工人们输送膳食补充剂，他们还是很可能缺乏维生素D（人体一般通过阳光制造维生素D），时间一长可能导致骨头和肌肉的衰弱，但是两个月的时间似乎不足以造成长期损伤。
“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。
Thus iodine deficiency, as the single greatest preventable cause of mental retardation, is an important public-health problem.
因此，缺碘——这唯一可预防的、导致智力缺陷的疾病——是一个重要的公共健康问题。
And since testosterone deficiency is often the result of other health problems rather than the cause of them, obese men, for example, often find that once they lose weight, hormone levels bounce back.
并且，由于睾丸激素下降通常是健康问题的结果，而并非其成因，所以，比方说肥胖人士，发现他们一旦减肥，激素水平通常会反弹。
Studies show that iodine deficiency is the leading preventable cause of mental retardation.
研究显示，缺碘是智力发育迟缓的一个主要但可预防的因素。
Niacin deficiency can also cause an eczema type of skin eruption with brown pigmentation, largely on the face, forearms and legs.
烟酸缺乏症也可以引起皮肤上的爆发在很大程度上与棕色色素沉着，面对湿疹型，前臂和腿部。
Calcium deficiency is the main cause of this malaise.
钙剂缺乏是引起这种疾病的主要原因。
The study looked at patients treated during childhood for growth hormone deficiency or short stature of unknown cause.
这个研究着眼于那些在儿童期因生长激素缺乏或者不明原因的身材短小而接受治疗的患者。
Results iodine excess can cause goiter, but the extent of goiter was significantly lower than that of iodine deficiency.
结果碘过多可导致大鼠甲状腺肿大，但肿大程度明显低于碘缺乏。
Congenital deficiency, bad living habits or being stimulated by character, the intense from the fast speed of life and work, environmental pollution and atrocious weather can cause sub-health problem.
亚健康状态产生的原因，是由于自身存在先天不足，有不良生活习惯，性格刺激等，有工作和生活节奏紧张，环境污染，气候恶劣等。
One cause of goitre is iodine deficiency.
原因之一甲状腺肿是缺碘。
The deficiency of these mechanisms will cause the emergence of the mutator phenotype.
这些机制的缺陷将导致突变表型的出现。
Menstruation is the leading cause of iron deficiency in the developed world, but many women are not aware they have it.
在发达国家，生理期是缺铁的主要原因，但许多女性并不清楚这一点。
In addition, weight loss leading to iron deficiency anemia is also a major cause of cooling.
此外，由于减肥导致的缺铁性贫血也是致冷的一大原因。
Testosterone deficiency is unlikely the cause of the age-associated deterioration in glucose tolerance commonly observed in elderly men.
睾酮不足未必是常见于大龄男性的年龄相关性葡萄糖耐量受损的病因。
Deficiency of DLST in mice was suggested to cause increased oxidative stress in mitochondria and is involved in the pathogenesis of Alzheimer disease (2).
DLST缺失小鼠线粒体氧化应激增加，并且会导致阿尔茨海默病的发生(2)。
However, the relationship between structure and functions of MBL and the mechanisms by which MBL structure gene mutations cause opsonic deficiency are to be clarified.
目前，MBL的结构-功能关系未明，MBL基因突变引起调理吞噬缺损的机制不清，这些均需进一步研究予以阐明。
Deficiency or excess of water in the soil could cause the tremendous decline of the nitrogenase activity.
土壤水分过多或缺乏，都导致固氮活性极大降低。
The resul suggest that the deficiency of estrogen and progesterone can cause the hyperplasia of C cells in female mice.
雌、孕激素缺乏可引起雌性小鼠甲状腺C细胞增生。
The essential cause of iron nutrition deficiency lie in that soil soluble iron cannot satisfy the need of plants.
土壤中活性铁远远不能满足植物所需含铁量，这是造成葡萄铁营养不酒足的根本原因。
Although the cause has some relation with construction operation, yet the major factor should be due to deficiency of the theory and improper design of the prestressed steel.
尽管存在施工方面的原因，但结构设计理论不足，是预应力混凝土箱梁开裂的主要原因。
The results showed that riboflavin deficiency was able to cause patent degeneration of peripheral nerve.
结果表明，核黄素缺乏主要损害雏鸡的外周神经。
However, the analysis of the underlying reasons which cause the deficiency of political affairs open perhaps looks a little weak.
但是本人自感对于我国政务公开中存在问题的原因分析还略显薄弱，这是文章的不足之处。
For the cause, the paper focuses on the necessity and importance of the law protection on the consumers' rights and interests, and the deficiency of the legislation.
为此，本文着重论述了我国对消费者权益进行专门立法保护的必要性和重要性、现行有关立法的不足等问题，并在此基础上提出了进一步完善有关立法的建议和对策。
The root cause of the loss of CPAs sincerity lies in the deficiency of system proper.
注册会计师诚信缺失的根源在于制度缺陷。
Leg cramps generally occur, often in a time of rest or sleep, such as cold, calcium deficiency, osteoporosis may cause.
一般人发生腿抽筋，往往是在休息甚至睡眠的时候出现，比如受凉、缺钙、骨质疏松都可能引起。
Leg cramps generally occur, often in a time of rest or sleep, such as cold, calcium deficiency, osteoporosis may cause.
一般人发生腿抽筋，往往是在休息甚至睡眠的时候出现，比如受凉、缺钙、骨质疏松都可能引起。
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