请将下面这段话翻译成英文:

中国的保健食品(health food)市场首次出现于20世纪80年代。 保健食品是指具有特定保健功能或补充维生素或矿物质的食品。保 健食品适用于特定人群消费,具有调节人体功能的效果,但不用于治疗疾病的目的。保健食品有两种。一种是具有特定保健功能的食品, 另外一种是营养补充剂。

参考翻译:

China’s health food market first emerged in the 1980s. Health food refers to food products which claim to have specific health functions or supplement one’s vitamins or minerals. Health food is suitable for the consumption by specific groups of people and has the effect of regulating human body functions, but is not used for the purpose of treating diseases. There are two kinds of health food. One is food with specific health func¬tions, the other is nutritional supplements.