摘要

<正>尽管知道垃圾食品很不健康,但还是有许多人喜欢吃垃圾食品。为什么这类食品会有如此之大的吸引力呢?Many people love ice cream, pizza, French Fries, candy despite knowing that these are unhealthy. What is it about those foods that give them such mass appeal?