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sodium DefinitionSodium is an electrolyte mineral, commonly known as salt.
It helps maintain the balance of fluids and acids in the body.What food source is the nutrient found in?Sodium occurs naturally in most foods. It is even present
in drinking water. Prepared foods contain the most sodium in the
form of salt and food additives.Convenience foods are designed to be quick and easy to
transport, store prepare and eat. To do all this, they need stabilizers,
preservatives, and ingredients to improve taste. Sodium does all of that.
High amounts of sodium chloride are found in processed meats
such as bacon, sausage, and ham, in canned soups and vegetables,
and in many frozen foods. Most restaurant food is also high in sodium.Food additives that contain sodium include:
- monosodium glutamate, known as MSG
- sodium nitrite
- sodium saccharin
- baking soda, known as sodium bicarbonate
- sodium benzoate
How does the nutrient affect the body?Sodium performs the following key functions in the body:
- regulates fluid balance by controlling the flow of liquids in and
out of each cell
- sparks nerve impulses
- helps the body to process and digest proteins and carbohydrates
InformationSodium in the diet is measured in milligrams (mg). There is
no recommended dietary allowance, called RDA, for sodium. But the National
Academy of Sciences states that a person should consume
at least 500 mg per day, and that healthy adults should stay within the range of
1,100 to 3,300 mg a day.The American Heart Association recommends that for every
1,000 calories consumed, the sodium intake should be 1,000 mg and
should not exceed 3,000 mg per day. The average sodium intake in the
US is between 4,000 and 5,000 mg per day. One teaspoon of table salt
contains 2,300 mg of sodium.Sodium helps cause high blood pressure in some people.
Anyone with this problem needs to reduce the amount of sodium
in his or her diet. | Author: Kimberly Tessmer, RD, LD Date Written: 05/16/00 Reviewer: Kathleen A. MacNaughton, RN, BSN Date Reviewed: 09/29/02
Potential conflict of interest information for reviewers available on request
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