A diet deficient in vitamin D may cause the disease rickets.
缺少维生素D的饮食可能导致软骨病。
Vitamin D3
英语例句库
Hypocalcaemia (low calcium) is also seen due to poor absorption of vitamin D and calcium, and secondary to low protein binding of calcium.
低血钙有时也会发生，因为维生素D和钙质的吸收不良和低蛋白结合钙。
These results suggest that early neonatal hopocalcemia appears to be related to a transient lack of response to PTH of the target organs, disordered vitamin D metabolism and hypercalcitoninemia.
由上述结果推论新生儿之血钙调节是由多种因素共同参与，而导致新生儿低血钙症之重要因素，包括暂时性肾小管细胞对副甲状腺素之低反应及维生素D代谢上之障碍。
原声例句
摩登家庭第七季_Modern Family-Season07
Vitamin D has his own t-shirt business?
维他命D在做自己的T恤生意吧？
科普小杂文
Basically the more Vitamin D, the more an enzyme CYP3A4 is produced.
基本上，维生素D越多，产生的CYP3A4酶就越多。
北师大新课改初中英语八年级上册
Vitamin D is also important because it helps calcium work well in our bodies.
维他命D同样也很重要，因为它能让钙质被我们身体充分地吸收。
VOA慢速英语_世界
Too much Vitamin D can cause heart problems, kidney damage and other medical conditions.
过量服用维生素D会导致心脏问题、肾脏损害和其他疾病。
Asap SCIENCE 精选
But it's not just sunlight and Vitamin D that makes the difference.
但造成这种差异的不仅仅是阳光和维生素D。
摩登家庭第七季_Modern Family-Season07
Better yet, a nickname basis, Vitamin D.
或者直接叫昵称 维他命D。
Asap SCIENCE 精选
Furthermore, there is evidence to suggest that Vitamin D helps prevent cancer, heart disease and depression.
此外，有证据表明维生素D有助于预防癌症、心脏病和抑郁症。
Asap SCIENCE 精选
This activated Vitamin D works to absorb calcium from your food, ultimately leading to bone growth and strength.
这种活性维生素D可以从食物中吸收钙，影响骨骼生长和骨强度。
VOA Special 2018年1月合集
And vitamin D produces hormones that brighten your mood.
而维生素D会产生让你心情愉悦的激素。
空中英语：大家说英语
So maybe we don't get enough vitamin D?
所以我们可能没有得到足够的维他命D？
TED-Ed（音频版）
It also makes vitamin D and substances that help digestion.
它还生产维他命D和 其他帮助消化的一些物质。
VOA Special 2018年2月合集
Sunlight is required for the body to produce vitamin D.
人体需要阳光来产生维生素D。
名人73个快问快答（双语精选）
And I guess just be out in the sun, vitamin D.
然后晒晒太阳，补充维他命 D。
科普小杂文
So with less vitamin D, cholesterol levels might rise.
因此，维生素D减少，胆固醇水平可能会上升。
CNN 10 学生英语 2018年1月合集
The sun is lower in the sky, and as a result, you have less Vitamin D actually being produced in your body.
太阳的直射角度很低，结果就会导致你身体产生的维生素D减少。
生活小窍门
Persons who are on higher amounts of vitamin D or have higher amounts of vitamin D will have less anxiety and depression.
那些自摄入更多维生素D的人或自身维生素D含量较高的人焦虑和抑郁的程度较低。
Osmosis-泌尿
Active vitamin D then goes on to cause the gastrointestinal tract to increase calcium absorption.
活性维生素D继续作用于消化道，增加钙的吸收。
艾玛·沃特森合辑
It's traveling around the world with me, it's got my vitamins in it, Vitamin C, Vitamin D, kind of thing, the basics.
我带着它满世界飞，用来装维生素片，维生素C，维生素D，类似这些基础保健品。
WIL生活启示录
But When they gave high vitamin D and normal vitamin A, they got hypervitaminosis D.
但是当给予火鸡大剂量的维生素 D 和正常量的维生素 A 时，他们则会出现维生素D过多症。
Osmosis-肌骨
Secondly, vitamin D must become metabolically active, and this process also has two steps.
其次，维生素D需要有代谢活性，这一过程细分为两步。
中文百科
胆钙化醇 Cholecalciferol
（重定向自Vitamin D3）
胆钙化醇（英语：Cholecalciferol，又称为维生素D3或胆钙化固醇）是维生素D的一种，胆固醇脱氢后生成的7-脱氢胆固醇经紫外线照射即可形成胆钙化醇，因此也就是说胆钙化醇的维生素D原是7-脱氢胆固醇。胆钙化醇在肝脏中经羟化酶系作用形成25-羟胆钙化醇，再在肾脏中被羟化为1,25-二羟胆钙化醇，这种物质的活性较胆钙化醇高50%，被证明是维生素D在体内的真正活性形式。且1,25-二羟胆钙化醇属于肾脏分泌的一种激素，因此实际上胆钙化醇也是一种激素原。
英语百科
Cholecalciferol 胆钙化醇
（重定向自Vitamin D3）
Cholecalciferol (/ˌkoʊləkælˈsɪfərɒl/) (vitamin D3) is one of the five forms of vitamin D. It is a secosteroid, that is, a steroid molecule with one ring open. Cholecalciferol is inactive: it is converted to its active form by two hydroxylations: the first in the liver, the second in the kidney, to form calcitriol, whose action is mediated by the vitamin D receptor, a nuclear receptor which regulates the synthesis of hundreds of enzymes and is present in virtually every cell in the body.