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Rickets develops in children , whereas osteomalacia affects adults .

佝偻病多发生在儿童时期，然而，软骨病多发于成人时期。

Too little vitamin d can contribute to osteoporosis and rickets in children .

缺乏维生素d可引起骨质疏松或佝偻病。

Without vitamin d , bones become soft and bend in the middle , giving the typical rickets appearance of bow legs .

缺乏维生素d时，骨头会变得疏松和导致骨骼的中部弯曲，继而出现以弓形腿为代表的典型的佝偻病。

D deficiency usually results in bad mineralization of bones , leading to bone softening , osteomalacia , rickets and osteoporosis .

缺乏维生素d会导致骨质中出现有害的矿物质，让骨质变软，骨软化，佝偻病和骨质疏松症。

Rickets is usually caused by a lack of vitamin d , which is needed to absorb calcium to build bones .

由于人体需要维生素d来吸收钙从而增强骨质，所以佝偻病通常是由于缺乏维生素d所造成。