营养素的需要量看来是相互依赖的。因为一种营养素的缺乏或过多能够改变另一个营养素的利用。已表明,尽管摄入足够的能量,蛋白质缺乏会导致氮存留和体重增长都降低。在这种情况下,机体的更多的能量都作为热量而失散了。Maclean 等最近报告,蛋白质缺乏由于干扰了脂肪的吸收,而可能干扰了能量的合理利用。在对儿童的一个较早的研究中,Maclean等观察到当把全天的蛋白质在一餐中供给而热 The nutrient requirements appear to be interdependent. Because lacking or too much of one nutrient can change the utilization of another nutrient. It has been shown that lack of protein leads to reduced nitrogen retention and weight gain despite adequate energy intake. In this case, more of the body’s energy is dissipated as heat. Maclean et al. Recently reported that lack of protein interferes with the rational use of energy due to disrupting the absorption of fat. In an earlier study of children, Maclean et al. Observed that when the whole day’s protein is supplied in a meal and the heat