CHAPTER III 



FOODS 



38. Kinds of substances in food. A few hours after 

 eating, all the food is used by the cells of the body, and 

 then they ask for more through the feelings of hunger and 

 thirst. To satisfy these feelings, man uses many different 

 kinds of food, all containing either water, albumin, fat, 

 starch, or mineral substances. 



2 eggs. 



Ib. of bread. 3 pints of water. 



Food required daily by a healthy 



1 1 pints of milk. 



39. Why sugar is fattening. The fat of the body is 

 formed from albumin. When much sugar is eaten, it is 

 oxidized in place of the albumin and fat. These remain 

 and make the body heavier. So we say that sugar is 

 fattening. But sugar gives only heat and power to the 

 body. Albumin gives weight, heat, and power, while 

 water and minerals give weight only. 



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