Everyone needs some salt to function. Also known as sodium chloride, salt helps maintain the body's balance of fluids. Salt also functions in many foods as a preservative, by helping to prevent spoilage and keeping certain foods safe to eat. But nearly all Americans consume more salt than they need, according to the 2005 Dietary Guidelines for Americans. These guidelines are published every five years by the U.S. Department of Health and Human Services and the U.S. Department of Agriculture.
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The natural salt in food accounts for about 10 percent of total intake, on average, according to the guidelines. The salt we add at the table or while cooking adds another 5 to 10 percent. About 75 percent of our total salt intake comes from salt added to processed foods by manufacturers and salt that cooks add to foods at restaurants and other food service establishments.
Q. What are the health effects of too much salt?
A. In many people, salt contributes to high blood pressure. High blood pressure makes the heart work harder and can lead to heart disease, stroke, heart failure, and kidney disease.
Q. What is the daily recommended amount of sodium for adults?
A. The amount of salt in a food is listed as “sodium” on the Nutrition Facts Panel of food labels. The Dietary Guidelines recommend that the general population consume no more than 2,300 milligrams of sodium a day (about a teaspoon of table salt). Most food labels shorten the word “milligrams” to “mg.”
Some people are more sensitive to the effects of salt than others. The guidelines also recommend that, in general, these populations consume no more than 1,500 milligrams.
These populations include
People with high blood pressure, kidney disease, or diabetes
People who are middle-age or older
The exceptions to this are people whose doctors have put them on a diet that requires even less sodium because of a medical condition. Always follow your doctor’s recommendation about how much sodium you can have daily.
Q. What steps can I take to lower my salt intake?
Eat more fresh fruits and vegetables.
Consume foods that are rich in potassium. Potassium can help blunt the effects of sodium on blood pressure. The recommended intake of potassium for adolescents and adults is 4,700 mg/day. Potassium-rich foods include leafy, green vegetables and fruits from vines.
Flavor food with pepper and other herbs and spices instead of salt.
Choose unsalted snacks.
Read food labels and choose foods low in sodium.
Q. How can I tell if a food is low in sodium or high in sodium?
A. The Nutrition Facts Panel that appears on food labels also lists the “% Daily Value” for sodium. Look for the abbreviation “%DV” to find it. Foods listed as 5% or less for sodium are low in sodium. Foods listed as 6% to 20% contain a moderate amount of sodium. Anything above 20% for sodium is considered high. Try to select foods that provide 5% or less for sodium, per serving.