Cow's milk can produce iron deficiency by providing little dietary iron itself, and at the same time producing iron loss by inducing gastrointestinal bleeding.

牛奶本身缺乏可食用铁，因此可能引起缺铁，同时可能引发肠胃流血造成铁的流失。

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Some iron is lost in sweat, and, for unknown reasons, intense endurance exercise is sometimes associated with bleeding of the digestive system.

有些铁离子随汗液流失。另外，由于某些未知的原因，高强度的耐力运动有时是与消化系统内出血联系在一起的。

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Conclusion a rat model with IDA was successfully established by feeding the rat with a low iron content diet and followed by bleeding.

结论给大鼠喂以低铁饲料辅以少量放血，可以成功建立缺铁性贫血的动物模型。

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