稍有卫生知识的人,都知道铁对于身体健康是有益的。但铜对于人体究属有害,还是有益,便不免怀疑了。因此把古今学者研究所得,摘录于下,以供参考。一八九六年Filehne 把钠与蛋白质化合物,与硫酸铜加热制成含铜的蛋白质,叫做Cupratin,然后把这化合物,用大量喂猫狗,结果是呕吐,但对于肝脏查无病理变化,亦不发生贫血征象。所吸收的铜化合物,有百分之九十八在粪便中排泄出来。后来另有二个学者同样试验,所得结果相同。Filehne 从试验铜化蛋白所得结果,认为人在饮食中所吸收铜量,每天不超过半克,绝不发生显著的影响。一九一八年Huber 研究氨基酸铜盐的反应,他用各种方法喂豚鼠——皮下注射、肌肉注射、与口腔吞食——对于慢性中毒的豚鼠,所得结果,都是否定性。 People with a little health knowledge know that iron is good for your health. But copper is harmful to the human body, or useful, they can not help but suspect. Therefore, the ancient and modern scholars research results, excerpts below, for reference. In 1896, Filehne heated sodium and protein compounds with copper sulfate to make copper-containing proteins called Cupratin. Then, the compound was fed on a large number to cats and dogs. The result was vomiting but no pathological changes in the liver No signs of anemia. Ninety-eight percent of the copper compounds absorbed are excreted in the excrement. Later, another two scholars tested the same, the results obtained the same. According to Filehne’s results from the test of the cucurbit protein, the amount of copper absorbed by people in the diet, no more than half a gram per day, is never significantly affected. In 1918 Huber studied the reaction of amino acid copper salts. He used various methods to feed guinea pigs - subcutaneously, intramuscularly, and swallowed in the mouth - and for chronic poisoning guinea pigs, the results were negative.