Is it low sodium?

Straight answers on hidden sodium in everyday food.

Is rotisserie chicken really that salty? What about canned tuna, or a slice of bread? Each answer traces the sodium back to where it's actually added and tells you exactly what to check on the label — backed by the Foodsage ingredient checker.

How to read a low-sodium answer

What the FDA's sodium claims mean

Sodium claims on food packages have fixed definitions, and every one of them is measured per serving. Low sodium means 140 milligrams or less per serving. Very low sodium means 35 milligrams or less. Sodium free, or salt free, means less than 5 milligrams, and reduced sodium means at least 25 percent less sodium than the regular version of the product. Because the serving size is set by the manufacturer, a package holding several servings can contain far more sodium than the claim suggests.

Using the Daily Value

The Daily Value for sodium is less than 2,300 milligrams a day, and it is a reference amount rather than a personal target. On a Nutrition Facts label, 5 percent of the Daily Value or less per serving counts as low, and 20 percent or more counts as high. That quick check works even when a package carries no claim. The two benchmarks do not line up exactly, since 140 milligrams is a little over 5 percent of 2,300, so read the actual milligram figure as well as the percentage.

Sodium is not only table salt

On an ingredient list, sodium appears as salt but also inside compounds such as monosodium glutamate, sodium nitrite, sodium benzoate, sodium bicarbonate (baking soda) and disodium phosphate. Sodium works as a seasoning and as a preservative, so foods such as broth, soy sauce, canned beans, deli meat, cheese, bread and sauces commonly contribute a lot of it. Our answers name the ingredient behind the sodium in each food so you can see where it comes from and whether a lower sodium version is likely to exist.

Comparing products

To compare two products fairly, start with the serving size, because a lower sodium figure can simply reflect a smaller serving. Then compare the milligrams per serving, scan the ingredient list for salt, sodium-containing preservatives and flavor enhancers, and remember that reduced sodium is measured against the same brand's regular version and can still be high. A product with a low sodium claim is usually the clearest choice, and the percent Daily Value is the fastest way to judge everything else on the shelf.

Individual targets can be lower

People managing blood pressure, kidney disease or heart failure are often given a personal sodium limit by their clinician, and it can differ from the general 2,300 milligram figure. Each verdict on this site is general food information based on published rules and ingredient sources, not medical advice. Recipes also vary by brand and change over time, so the label on the product in your hands is the number to trust. Foodsage reads the full ingredient panel and flags additives, which helps when a long list hides several sodium sources.

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Foodsage reads the full ingredient panel and flags sodium, additives and other factors tied to food sensitivities.