饮食似乎是十分简单易懂的活动,但它与各种各样的现象有关:从贪食病(暴食)到厌食病;从嗜好美酒发展到异食癖(反复吃如像粘土或粉笔那样非营养物品);从心情愉快时对食物的消耗增加到动物和人的异常吸收量发展到厌食任何食物——甚至吃后几小时就生病。在“饮食心理学”一书中,罗格教授论述了所有这些和许多其它同样引人入胜的现象。尽管在过去三十年对饮食问题进行了大量研究工作,但我们对这些活动还没有很多可靠的了解。例如 J·梅耶(Mayer)提出他的饥饿原理就已有30多年。他认为在短时间内,饥饿是受血液中的葡萄糖消失率所控制,这是根据动、静脉中的葡萄糖浓度差所测定的结果。但这种机制不能维持恒定的体重,所以他补充提出一个长期控制系统:这个系统通过对脂肪新陈 Diet seems to be a very straightforward activity, but it is linked to a variety of phenomena: from bulimia (anorexia) to anorexia, from indulgence to pica (repeated eating like clay or chalk Nutritional items), increasing consumption of food from pleasurable to abnormal absorption of animals and people to any food that anorexia - even sick hours after eating a few hours. In “Dietary Psychology”, Professor Roger discusses all these and many other equally appealing phenomena. Although much research has been done on diet in the past three decades, we do not have much reliable understanding of these activities. For example, Mayer proposed his principle of hunger for more than three decades. He believes that in a short time, hunger is controlled by the rate of glucose disappearance in the blood, as a result of the difference in glucose concentration in the arterial and venous blood. However, this mechanism can not maintain a constant body weight, so he added a long-term control system: this system is based on fat