Deficiencies in certain organic chemicals can cause mental retardation in babies, rickets, beriberi, blindness, scurvy and many other diseases.

缺乏某些有机化合物，能引起婴儿智力迟钝、佝偻病、脚气病、失明、坏血病和其它许多疾病。

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Poor diets can lead to such diseases as rickets and scurvy.

文章第四段提到，佝偻病与坏血病都是饮食不良引发的。

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Vitamin deficiency can cause illnesses, eg scurvy, rickets.

给缺乏维生素的病人吃的食物。

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Ms. Warner recounts what life was like in poor areas before the introduction of vitamins into food substances, the fortification of white flour and milk, and the widespread availability of items like orange juice: Many people suffered from rickets (because of insufficient vitamin D and calcium), scurvy (vitamin C), pellagra (vitamin B3) and beriberi (vitamin B1).

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