SUMMARY 137 



A mixed diet is shown to be best and for the average person doing 

 moderate work the ratio per day should be about 3 to 4 oz. of pro- 

 tein to 16 oz. of carbohydrate and 4 oz. of fats. 



The fuel needs of the body have been carefully determined. The 

 amount needed for a boy or girl of high school age runs from 2100 

 to 2700 calories, depending on the occupation. 



Problem Questions 



1. What are vitamins? What do they do? How were the values of 

 vitamins discovered? 



2. What are amino-acids ? 



3. What is a food? 



4. What is a calorie? How is it determined? 



5. What is a balanced diet? Give examples. 



6. Why are certain vegetables included in a balanced diet? 



7. What are cheap foods ? Expensive foods ? Give examples. 



8. What are the daily calorie needs and how are they determined? 



9. Give some standards for a well-balanced diet. 

 10. What is a 100-calorie portion? Illustrate. 



Problem and Project References 



Hunter, Laboratory Problems in Civic Biology. American Book Company. 



Allen, Civics and Health. Ginn and Company. 



Bulletin 13, American School of Home Economics, Chicago. 



Buls. 6 and 7, Human Nutrition. Cornell University Reading Course. 



Cohnheim, Enzymes. John Wiley and Sons. 



Davison, The Human Body and Health. American Book Company. 



Ellis and Macleod. Vital Factors of Foods, Vitamins and Nutrition. D. Van 



Nostrand Company. 

 Funk, The Vitamines. Williams and Wilkins. 

 Harrow, Vitamines. E. P. Dutton and Company. 

 Hough and Sedgwick, The Human Mechanism. Ginn and Company. 

 Jordan, The Principles of Human Nutrition. The Macmillan Company. 

 Lusk, Science of Nutrition. W. B. Saunders Company. 

 McCoUum and Simmonds, The Newer Knowledge of Nutrition. The MacmUlan 



Company. 

 Norton, Foods and Dietetics. American School of Home Economics. 

 Sherman, Chemistry of Food and Nutrition. The Macmillan Company. 

 Stiles, Nutritional Physiology. W. B. Saunders Company. 

 Farmers' Bulletins 23, 34, 42, 85, 93, 121, 128, 132, 142, 182, 249, 256, 295, 



298, 717, 817, 824, 975, 1313, 1383. 



