Sodium and potassium are important cations essential to higher animals which regulate the composition of their body fluids. They participate in muscle contraction, stimualtion of nerve, maintenance of osmotic prossure, water metabolism, and maintenance of acid-base balance in blood. This study was designed to determine and report the sodium and potassium contents in Korean foods eaten in our daily lives and to give a help to the diet pattern of the patients who need low-sodium diet. Samples were cereals, legumes, fruits, and vegetables. They were obtained in the open market at the day experimented and the sodium and potassium contents of them were determined with flame photometer(Coleman Model 51).

Total phytosterol contents were determined in cereals, fruits, and vegetables which can be easily obtained in the open market of Korea.

The total cholesterol contents of meats, harms, and sausages, which are often eaten at our daily lives, were determined. And the cholesterol content in the differently prepared chicken was determined.

Total cholesterol content of fishes and shellfishes, which bought in the local market, was estimated in part (head, muscle, skin, egg, and roe). and also, the general analytical data(water, protein, fat, and ash) were examined in the parts. The results of cholesterol content are as follows;

1) In the fresh water fishes, the cholesterol content was highest in trout and watereel.

2) In the marine fishes, it was high in makerel, Spanish makerel, horse makerel, and hickory sard and low in sea-cucumber and thormbock stingray.

3) Cholesterol content of the parts in both fresh water fishes and marine fishes was highest in roe, and the next egg, skin, head, and muscle in the ordet named.

4) Cholesterol content of the shell fishes was 100mg~200mg/100g.

5) Generally, the cholesterol content also was high in the sample that fat content was high.