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Have you been told you need to do something about your blood pressure? If you have, chances are that you have been told about the relationship between sodium and high blood pressure. The American Heart Association (AHA) wants you to know that there are six sources of hidden sodium that can make your blood pressure regulation more difficult.
1. Canned soup.
Canned foods are packed with added salt to mask the "tinny" taste that is imparted by the can itself. Sometimes even a "healthy" canned soup can be loaded with a full day's allowance of sodium.
Some of the saltiest canned soups are those that are otherwise considered especially nutritious. An 11-ounce can of one brand of black bean soup, for instance, contains 3,027 mg of sodium, more than 150% of the recommended allowance for an entire day. (The manufacturer of this soup calculates a "serving" of this soup is 2/3 of a can, so that the recommended serving does not exceed a day's quota for sodium.) Any kind of Thai or Vietnamese soup made with fish sauce is also very high in sodium, since 1/3 of a cup of fish sauce, enough for 2 or 3 servings, contains 7800 mg of sodium, at 2600 to 3900 mg each.
Soup mixes are up to 10% salt. Even when diluted with water, they still pack 1,000 to 2,000 mg of salt.
Which soups are especially low in sodium? Many commercial "low-sodium" and low-salt soups contain just 40 to 60 mg of sodium per can, some even less. If you are making your own low-sodium soup, however, try to avoid salt substitutes containing potassium iodide. Besides imparting a metallic taste of their own, potassium iodide salt substitutes are not always safe for people who use certain high blood pressure medicines, especially ACE inhibitors (for example, lisinopril) or ACE-receptor blockers (for example, Losartan).
2. Fast food sandwiches.
The American Heart Association warns that a single fast food sandwich can contain more than whole day's allowance of sodium. This is particularly true of sandwiches garnished with pickles or made with bacon or ham. A thin slice of ham or Canadian bacon, just a single slice, contains 890 mg of sodium. Placing that tiny slice of ham or bacon on a biscuit adds another 600 to 1,000 mg of sodium. The pickles on a hamburger alone pack up to 1250 mg of sodium per serving.
The AHA's advice to order a side salad instead is not necessarily a good idea, however. Many commercial salad dressings contain even more sodium than fast food sandwiches. The two packets of Newman's Own Ranch Dressing served with a side salad, for example, contain 1948 mg of sodium.
A single slice of pizza often contains about 1,000 mg of sodium. The AHA has a simple solution to your pizza problem: Order your pizza without cheese. But unless you are a connoisseur of traditional Italian pizzas, who is going to do that?
The high-sodium ingredients at Pizza Hut, for example, are ham, Italian sausage, and pepperoni. Pizza with a crispy crust typically contains more sodium (although fewer calories) than pizza with a thick crust.
Don't assuage your conscience by skipping your pizza and ordering a salad, however. A single serving of balsamic vinaigrette, creamy Italian dressing, or Caesar salad dressing contains 50% more sodium than a single slice of pizza.