自然界环境中的天然食品,无论是动物性食品,还是植物性食品,除了含有人体每日必需的各种营养素外,也含有一些非营养素类物质。这些物质一部分是动植物在生长过程中本身所带有的天然成分,另一部分则是动植物在生长过程中来自于外界环境的各种污染物。这其中的有些物质能够干扰动植物食品中某些营养素被人体的吸收、利用,并对人体健康带来一定的危害作用。常见的存在于动植物性食品中的降低营养素吸收、利用的物质主要有以下这些: Natural foods in the natural environment, whether it is animal foods or plant foods, contain a number of non-nutrients in addition to the daily necessities of the human body. Some of these materials are the natural ingredients that animals and plants own during their growth and the others are all kinds of pollutants that come from the external environment during their growth. Some of these substances can interfere with the absorption and utilization of certain nutrients in animal and plant foods by the human body and have some harmful effects on human health. Common in animal and plant foods to reduce nutrient absorption, the use of the following substances are as follows: