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Sodium and the Diet Fact Sheet No Sodium and the Diet Fact Sheet No. 9.354 Food and Nutrition Series|Health by L. Bellows and R. Moore* What is Sodium? How much Sodium is Quick Facts Required? Sodium is an important mineral and • A diet high in sodium may be electrolyte necessary for many functions The Adequate Intake (AI) for sodium one factor in the development in the body. It has an important role in is 1,500 milligrams daily for males and of high blood pressure. maintaining water balance within cells, females ages 9-50. This value is less and is involved in proper functioning of than 1 teaspoon of table salt per day. • Sodium is a component of both nerve impulses and muscles within The maximum recommended level of salt: table salt is 40% sodium the body. Along with potassium, sodium sodium intake is 2,300 milligrams daily. and 60% chloride. also plays a crucial role in blood pressure On average, more than 85% of American regulation. Sodium is only needed in men and women consume sodium in • Processed and preserved small quantities, and the kidneys are amounts that far exceed the maximum food items such as canned responsible for excreting extra sodium recommended level of intake. foods, fast foods, cheese, from the body. and condiments usually have Sodium Deficiency high sodium content, and are the main source of dietary Sources of Sodium Sodium deficiency is extremely rare, as most Americans over-consume sodium for Americans. Sodium in Food—A small amount sodium. Deficiency usually only occurs of sodium is naturally present in most • Several food industries are with prolonged bouts of fluid loss due foods, but most dietary sodium is discovering methods to to diarrhea, vomiting, or perspiration. found in processed foods in the form decrease sodium in their Those who have kidney problems may of salt. Salt may be added for flavor products. also be more likely to develop a sodium enhancement and to extend the shelf life deficiency. Symptoms of deficiency • The Dietary Guidelines for of certain foods. Salt is added to most include nausea, dizziness, and muscle canned foods, some frozen vegetables, Americans recommended cramps. fast foods, smoked and cured meats, and reducing sodium intake to no pickled foods (Table 1). It is used in most Special Considerations: more than 2,300 milligrams cheeses, sauces, soups, salad dressings For athletes and those strenuously per day. However, those and many breakfast cereals. It is also active for more than 1 hour in with hypertension, over found in many other ingredients used duration—Those exposed to conditions the age of 51, or who are in food processing. Many commercially promoting sweat loss for extended African American, should prepared condiments and seasonings are periods may be at risk for low blood consume no more than 1,500 also high in sodium. The food industry sodium levels, or hyponatremia. For milligrams of sodium per is working to decrease sodium content in those who are well hydrated and active day. This recommendation these food items. for more than four hours, it is important includes over half of all Sodium in Salt—Sodium is a to replenish sodium stores in the body. Americans. component of salt. Table salt, also known Usually, sodium losses can be easily as sodium chloride, is 40% sodium and replaced during the next meal. However, 60% chloride. The sodium portion of salt in endurance exercise longer than 4 is associated with high blood pressure. hours, sodium stores should be replaced during exercise with food or sports drink. For more information on nutrition © Colorado State University and exercise, see fact sheet Nutrition for Extension. 7/96. Revised 3/13. the Athlete. www.ext.colostate.edu *L. Bellows, Colorado State University Extension food and nutrition specialist and assistant professor; R. Moore, graduate student. 3/2013 as people age, and can lead to • Light in sodium: At least 50% Salt-Sodium Conversions cardiovascular disease. Some less sodium per serving than the individuals are "salt sensitive," so reference food. 1/4 teaspoon of salt = 500 reducing intake of sodium helps to • Unsalted or No salt added: No milligrams of sodium reduce blood pressure levels. A high sodium has been added to the intake of sodium early in life might product, but the product still 1/2 teaspoon of salt = 1,000 weaken genetic defenses against milligrams of sodium contains small amounts of naturally developing high blood pressure. occurring sodium. 3/4 teaspoon of salt = 1,500 Experts recommend reducing sodium milligrams of sodium intake while blood pressure is still normal, which may decrease the risk Steps to Reduce Sodium 1 teaspoon of salt = 2,000 for hypertension later in life. An important recommendation milligrams of sodium For those with hypertension or from the Dietary Guidelines for any other special condition, following Americans is to reduce consumption an overall eating plan known as Too much Sodium? of sodium. The following suggestions DASH (Dietary Approaches to Stop are starting points to reduce dietary Most Americans consume too Hypertension) and restricting sodium sodium: much sodium. The Tolerable Upper intake to 1,500 milligrams per day, may Limit Level (UL) for sodium is 2,300 be useful for lowering blood pressure. • Use more fresh fruit, vegetables milligrams daily for teens and adults. Increasing potassium intake has also and meat. Processed foods usually This value does not apply to those with been shown to have beneficial effects contain more sodium (Table 1). high blood pressure, as this value may for lowering blood pressure. For more • When cooking use canola oil or be set too high. In healthy individuals, information about the DASH eating olive oil, which contain less sodium, excess sodium is usually excreted plan or diet and hypertension, see instead of butter or margarine. by the kidneys. However, chronic fact sheet Diet and Hypertension and • Check food labels for the words consumption of excess sodium may DASHing to Lower Blood Pressure. For salt or sodium. Salt often is used also lead to edema or water retention. more information on potassium and as a preservative or flavoring Special Conditions for a Low the diet, see fact sheet Potassium and agent. Any ingredient that has Sodium Diet—In addition to those the Diet. sodium, salt or soda as part of its who are African American or over the name (monosodium glutamate age of 51, groups with the following Sodium Labeling (MSG), baking soda, and seasoned conditions should limit sodium intake salt) contains sodium. For more to 1,500 milligrams daily: information on food labels, see Health Claims Kidney Disease: Those with kidney fact sheet Understanding the Food Specific health claims can be made disease may have trouble excreting Label. Purchase foods low in sodium about sodium for food products sodium and other minerals, leading to (Table 2). that meet certain requirements. For water retention and swelling. • Do not use salt substitutes, especially example, "A diet low in sodium may those that contain potassium, Congestive Heart Failure: Those reduce the risk of high blood pressure, without first talking to a medical with heart failure experience swelling a disease associated with many factors." professional. and fluid retention in the lungs and In order to make a health claim about throughout the body. Since sodium sodium and hypertension (high blood • Remove the salt shaker from the promotes fluid retention, a low sodium pressure), the food must be low or very table and season foods with herbs diet may be helpful in relieving fluid low in sodium. The following terms and spices rather than salt (Table 3). accumulation. describe health claims from products • Try products such as low or reduced Osteoporosis: Women who that may help to reduce sodium intake: sodium to curb sodium intake. consume excess sodium may be at • Sodium free: Less than 5 milligrams • Plan meals that contain less sodium. higher risk for developing osteoporosis of sodium per serving. Try new recipes that use less salt even if calcium intake is adequate. • Very low sodium: 35 milligrams of and sodium-containing ingredients Some evidence suggests that for each sodium or less per serving. and seasonings. Adjust your own teaspoon of salt (2,000 milligrams recipes by reducing such ingredients • Low sodium: 140 milligrams of of sodium) consumed, considerable a little at a time. Make homemade sodium or less per serving. calcium is excreted in the urine. condiments, dressings and sauces High Blood Pressure or • Reduced sodium or Less sodium: At that are low in sodium. least 25% less sodium per serving Hypertension: High sodium • Taste food before it is salted. If than the reference food. consumption is one factor involved using canned food, rinse in water in the development of high to remove some of the salt before blood pressure, or hypertension. preparing or serving. Hypertension tends to develop Table 1. Sodium Comparisions—As sodium content increases, so does the level of processing.1 Food Item Least Processed Moderately Processed Most Processed (1 serving) Low Sodium Elevated Sodium High Sodium < 100 milligrams (mg) 100-350 milligrams (mg) per >350 milligrams (mg) per serving serving per serving Apple Raw apple, 2 mg Apple pie (frozen), 208 mg Apple pie (fast food), 400 mg Bread Low sodium bread, 7 mg White Bread, 114 mg Plain Bagel, 561mg Cooking fats Vegetable oil, 0 mg Butter (salted), 116 mg Butter(unsalted), 2 mg Margarine, 140 mg Chicken Chicken, 69 mg Chicken salad, 290 mg Chicken pie (frozen), 907 mg Chicken noodle soup, 1,107 mg Chicken dinner (fast food), 2,243 mg Corn Fresh corn, 1 mg Corn flakes, 256 mg Canned corn, 384 mg Frozen corn,7 mg Cucumber Raw Cucumber, 2 mg Sweet pickle, 128 mg Dill pickle, 928 mg Flavorings and Marinades Lemon, 1 mg Ketchup, 156 mg Soy sauce, 1,029 mg Seasonings Herbs, 1 mg Mayonnaise, 103 mg Salt, 1tsp-1,938 mg Potatoes Potato, 5 mg Potato chips, 200 mg Mashed potatoes (instant), 485 mg Potato salad, 625 mg Dairy Plain yogurt, 105 mg Milk, 122 mg Choc.
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