Mineral Elements in Nutrition




Function in the Body


Dietary Allowance

Sodium Common salt, Regulates osmotic pressure, Urine and Intake often
  fruits and vegetables. neutrality, and heart beat. perspiration. excessive.
Potassium Cereals and Regulates osmotic pressure, Urine and Adequate in
  vegetables. neutrality; constituent of perspiration. average diet.
    all cells.    
Magnesium Muscle tissue, cereals, Antagonistic to Ca; necessa- Urine. Adequate in
  other seeds. ry for mineral balance in   average diet.
Chlorine Common salt. Constituent of acid in the Urine and Adequate in
    gastric juice, regulates perspiration. average diet.
    osmotic pressure    
Sulphur Proteins. Necessary constituent of Urine. Adequate if
    all body cells, hair and nails.   protein is adequate.
Calcium Milk, eggs, cheese, Bone and teeth formation, Feces (chiefly). For adult, .68 gm.
  nuts and vegetables. coagulation of blood, regu-   daily; for child, 1.0
    lates heart beat, aids in re-   gm. Low in average
    gulating mineral metabolism.   diet.
Phosphorus Milk, eggs, cheese, Bone and teeth formation; Feces in herbi- 1.32 gm. daily.
  nuts. constituent of cells; utiliza- vora. Low in average diet.
    tion of organic food-stuffs; urine in carni-  
    regulation of neutrality. vora  
Iron Eggs, meat, spinach, Constituent of hemoglobin; Feces. .015 gm. daily;
  molasses, whole of blood.   more for anemic
  grains. necessary for oxygen   individuals.
    carrying power.    
Iodine Sea foods, water and Necessary for normal Feces. .015 gm. daily;
  plant life in non- functioning for the thyroid   more for anemic
  goitrous regions; gland.   individuals.
  iodized salt.      
Copper Nuts, legumes, cereals, Assists in utilization of iron   Approximately 1 mg.
  dried fruits. in hemoglobin synthesis.   or less sufficient.


Reference: Sherman, H.C., “Chemistry of Food and Nutrition,” The Macmillan Co., 1926 and 1932.