CHAPTER XXX 

 HYGIENIC ASPECTS OF NUTRIHON 



361. Questions for Discussion. 1. Compare the human body with 

 a steam engine in respect to (1) materials to be fed to it; (2) source 

 of materials used ; (3) necessity of consumption of materials ; (4) how 

 energy secured is used; (5) products; (6) care needed to keep it in 

 working condition ; (7) chief sources of wear and tear ; (8) what be- 

 comes of broken-down organism. 2. What are the effects of putting 

 too much food into the body or swallowing it too hastily? 3. What is 

 the proper variety of foods? Does your own diet compare favorably 

 with what is regarded as a properly balanced diet? 4. It is quite pos- 

 sible to develop an appetite in such a way that only a part of the 

 things needed in a balanced ration are desired. Is your appetite so 

 developed? 5. Are substitutes for well-known foods (such as cotton- 

 seed fat for butter fat) injurious to us? Why do we sometimes object 

 to these substitutes? 6. Secure your state pure-food regulations and 

 report on them in class. 



362. Needed care pain a danger signal. It is frequently 

 said that most human ills have their origin in the nutritive 

 system. After learning what alcohol can do to us we often 

 feel that it is in a class by itself as a source of danger. In 

 certain respects this is true, but constant attention must be 

 given to our ordinary foods and their uses if good health 

 is to be secured. The human body is such a complicated 

 mechanism that intelligent care is essential to its best use. 



Few people really understand how a locomotive operates, 

 though most people are interested in learning about it. The 

 human body is a machine that is far more complex than the 

 locomotive, and a machine which each of us must have a 

 hand in running. We have such natural appetites as hunger 

 and thirst and such pains as headache and stomach ache, 

 which tell us superficially about the needs of the human 

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