Minerals and their Importance in Nutrition

POTASSIUM

Potassium is essential to the life of every cell of a living being and is among the most generously and widely distributed of all the tissue minerals. It is found principally in the intracellular fluid where it plays an important role as a catalyst in energy metabolism and in the synthesis of glycogen and protein. The average adult human body contains 120 g. as potassium and 245 g. as potassium chloride. Out of this body potassium, 117 g. is found in the cells and 3 g. in the extra cellular compartment.

Potassium is important as an alkalizing agent in keeping a proper acid-alkaline balance in the blood and tissues. It is essential for muscle contraction and therefore, important for proper heart function. It promotes the secretion of hormones and helps the kidneys in detoxification of blood. Potassium prevents female disorders by stimulating the endocrine hormone production. It is involved in the proper functioning of the nervous system and helps overcome fatigue.

It also aids in clear thinking by sending oxygen to the brain and assists in reducing blood pressure. Potassium is widely distributed in foods. All vegetables, especially green, leafy vegetables, grapes, oranges, lemons, raisins, whole grains, lentils, sunflower seeds, nuts, milk, cottage cheese and butter milk are rich sources. Potatoes, especial potato peelings, and bananas are especially good sources. Potassium requirements have not been established but on intake of 0.8 to 1.3 g. per day is estimated as approximately the minimum need.

Potassium deficiency may occur during gastritis disturbances with severe vomiting and diarrhea, diabetic acidosis and potassium-losing nephritis. It causes undue nervous and body tiredness, palpitation of the heart, cloudiness of the mind, nervous shaking of the hands and feet, great sensitivity of the nerves to cold, and excessive perspiration of the feet and hands.

In simple cases of potassium deficiency, drinking plenty of tender coconut water daily , can make up for it. It is advisable to consume plenty of figs, apricots, prunes, almonds and tomatoes during the use of oral diuretics. Potassium-rich foods should be restricted during acute renal failure and Addison’s disease.

CHLORINE

In the human body, chlorine is liberated by the interaction of common salt, taken along with food, and hydrochloric acid liberated in the stomach during the process of digestion. It is essential for the proper distribution of carbon dioxide and the maintenance of osmotic pressure in the tissues.

This food element is necessary for the manufacture of glandular hormone secretions. It prevents the building of excessive fat and auto-intoxication. Chlorine regulates the blood’s alkaline -acid balance and works with Potassium in a compound form. It aids in the cleaning out of body waste by helping the liver to function.

Chlorine is found in cheese and other milk products, green leafy vegetables, tomatoes, all berries, rice, radishes, lentils, coconuts and egg yolk. No dietary allowance has been established, but an average intake of daily salt will ensure adequate quantity of chlorine. Deficiency of this mineral can cause loss of hair and teeth.

IODINE

The chief store-house of iodine in the body is the thyroid gland. The essential thyroxine, which is secreted by this gland, is made by the circulating iodine. Thyroxine is a wonder chemical which controls the basic metabolism and oxygen consumption of tissues. It increases the heart rate as well as urinary calcium excretion. Iodine regulates the rate of energy production and body weight and promotes proper growth. It improves mental alacrity and promotes healthy hair, nails, skin and teeth.

The best dietary sources of iodine are kelp and other seaweeds. Other good sources are turnip greens, garlic, watercress, pineapples, pears, artichokes, citrus fruits, egg yolk and sea foods and fish liver oils. The recommended dietary allowances are 130 mcg. per day for adult males and 100 mcg. per day for adult females. An increase to 125 mcg. per day during pregnancy and to 150 mcg. per day during lactation has been recommended. Deficiency can cause goiter and enlargement of the thyroid glands.

Small doses of iodine are of great value in the prevention of goiter in areas where it is endemic and are of value in treatments, at least in the early stages. Larger doses have a temporary value in the preparation of patients with hyperthyroidism for surgical operation.