据报道，由于钙的流失少，纯素食者需要食用的钙比杂食者少，而动物蛋白摄入量高会造成钙流失。
It has been reported that vegans may need to consume less calcium than omnivores due to lower levels of calcium depletion, which can be caused by a high intake of animal protein.
最近已经研制出一种动物食用的蛋白质饲料，它是用石油作为基本原料加上酵母而制成的。
Recently protein feeds for animals have been developed by growing yeast in a petroleum based stock.
一些健康专家相信，如果你食用大量的动物脂肪和蛋白质，你患心脏疾病和某些癌症的风险会增加。
Some health experts believe that if you eat large amounts of fat and protein from animal sources your risk of heart disease or certain cancers may increase.
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