先哲早就把人的功能活动概括为“食色，性也”。在人类的这两大功能活动中，食的功能和活动当然是占第一位的，所谓民以食为天。然而今天我们吃的是什么和怎么吃的呢？仔细看看我们一日三餐就会发现，我们正在吃下的正是我们极力想躲开的、将会毒害我们的形形色色的食品和材料? Sages long ago put people’s functional activities summarized as “food color, sex also.” Of these two major human activities, the functions and activities of food of course take the first place. However, what we eat today and how to eat it? A closer look at our three meals a day will reveal that what we are eating is exactly what we are trying to dodge and poison our diverse food and materials.