Date of Award:

1935

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Nutrition, Dietetics, and Food Sciences

Department name when degree awarded

Child Nutrition

Advisor/Chair:

Christine B. Clayton

Abstract

The purpose of this study is to collect and organize all data available to the investigator on the subject of calcium and phosphorus requirements for normal children. Since it is the business of nutrition to maintain health and prevent disorders, leaving the cure of disorders to the medical profession, this study deals with the calcium and phosphorus metabolism of normal children and avoids going into the pathological phases, taking up rickets and tetany only in so far as prevention is concerned.

If this study has any value it lies in the fact that the findings of investigators seem to be scattered throughout a great many books and scientific journals, and it was thought that the collection and organization of these findings would serve as useful purpose in making this research more readily available to nutrition students. The bibliography for the study was made up from references given by such recognized authorities and sources as Sherman, McLester, Starling, Lusk, Van Slyke and Peters, Bogert, Rose, Child Development Abstracts, British Nutrition Abstracts, and Chemical Abstracts. From this bibliography were chosen those books and articles which seemed to the writer to be most promising as to reliability, amount of information, and variety of information. Part of the work has of necessity been adapted to children from experiments on adults.

The importance of calcium and phosphorus in the diet of little children is emphasized by Sherman as follows: "The effect of an insufficient intake of calcium is natural more serious with growing than with full grown animals. The young need more calcium because during growth and development the body in increasing not only the amount but the percentage of calcium which it contains. *** growing children whose height, weight, and appearance are normal may have a calcium-poor condition of the body*** Since this is largely a matter of the deposition of calcium phosphate in the developing bones, the phosphorus content of the body tends to remain low when the calcium is low and to rise to normal with the calcium when the calcium content of the food is increased.

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