The Low-Sodium Diet for Heart Failure
The Low-Sodium Diet for Heart Failure

The Low-Sodium Diet for Heart Failure

According to the Centers for Disease Control and Prevention (CDC), about 6.2 million adults in this country are living with heart failure. This condition occurs when your heart doesn’t pump enough blood or oxygen to help other parts of your body.

While health conditions like diabetes, high blood pressure, coronary artery disease, and obesity can increase your risk for heart failure, smoking, drinking heavily, not exercising, and eating a diet heavy in saturated fat, sodium and cholesterol can as well.

Registered dietician Anna Taylor, RD, explains how sodium, in particular, affects your heart health and provides a list of low-sodium foods to work into your daily meal plans.

How sodium affects heart health

Sodium is a mineral and it’s naturally found in foods. But it’s added to processed foods, too. While sodium helps keep a normal balance of fluid in your body, those living with heart failure need to follow a low-sodium diet because it helps control symptoms and can prevent other heart problems.

“A low-sodium diet can help control blood volume and blood pressure. Excess sodium intake can lead to fluid retention,” explains Taylor. “Since people with heart failure often suffer from volume overload (which can overwork the heart), a diet low in sodium can help lessen fluid retention, meaning the heart doesn’t have to work so hard.”

High blood pressure can increase your risk for stroke, kidney disease and heart disease, like heart failure. Following a low-sodium diet can help improve blood pressure control, which can reduce your risk of these diseases from developing or worsening.

Why do I need to limit my sodium?

Limiting sodium in your diet can help minimize the amount of extra fluid around your heart and lungs and in your legs. Extra fluid in your body makes your heart work harder and can increase your blood pressure.

Keep in mind that salt and sodium aren’t the same things, though. Salt is a combination of sodium and chloride, and a teaspoon of salt equals 2,300 milligrams (mg) of sodium. While sea salt and kosher salt are less processed than ordinary table salt, they aren’t low in sodium. The amount of sodium is about the same for table salt and sea salt.

How much sodium is allowed for a heart-healthy diet?

Your healthcare provider may suggest sticking between 1,500 mg to 2,000 mg of sodium per day. If you’re wondering how you can start cutting down on sodium, try taking the salt shaker off the table, as 1 teaspoon of table salt equals 2,300 mg of sodium.

Also, remember that processed food has a lot of sodium. The majority of sodium in the average American’s diet is from processed foods and convenience foods. The salt shaker is just the tip of the iceberg. So skip the drive-thru and start cooking with fresh ingredients at home. And when you do eat at a restaurant, look for simply prepared foods — the more processed the food is, the more likely it’s high in sodium.

“Look for a baked potato instead of mashed,” says Taylor. “Choose a side salad instead of vegetable soup, since commercial broths are typically 800 mg of sodium per 1 cup. And ask the waiter to skip that bread basket — 1 roll typically contains more than 150 mg of sodium.”

And as you’re adjusting to the changes in your diet, it might help to keep a record of how much sodium you’re eating every day. You can write it down or use a meal tracking app to make things easier.

How to read food labels

Food labels are standardized by the U.S. government’s National Labeling and Education Act (NLEA). If you look at the food label below, you’ll notice that there’s a section that tells you how much sodium is in a serving of food. Pay attention to the following:

A. The sodium content is listed on the food label per serving size.

B. Ignore the % daily value and focus on the amount of mg sodium per serving.

You might also notice that some products are labeled “Low sodium” or “No sodium.” Low sodium means that food has 140 mg or less of sodium per serving. No sodium means that food has less than 5 mg of sodium per serving.

Important nutrition guidelines for a heart-healthy diet

Following a heart-healthy diet made up of high-fiber, low-cholesterol and low-sodium foods can help you maintain or reach a healthy body weight. Foods like fruits, vegetables, beans (legumes) and whole-grain foods also help with digestion and controlling glucose (sugar) levels.

Use fresh ingredients and/or foods with no salt added whenever possible. Fresh fruit, vegetables, meat, poultry and fish are low-sodium foods.

Most frozen vegetables are good alternatives to fresh vegetables. Canned or frozen fruits are acceptable as well. When you’re grocery shopping, choose no-salt-added canned vegetables or rinse canned vegetables before they’re cooked — this will remove a small amount of sodium in the product.

“Unless they have an added sauce or flavor, frozen vegetables rarely have added sodium, making them just as healthy an option as fresh vegetables,” says Taylor. “They are also an economical choice, since they don’t go bad as quickly as fresh produce does.”

For those favorite family recipes, try making healthy swaps for ingredients that are high in saturated fat, sodium and cholesterol and cut down on the amount of salt you add. Salt can be removed from any recipe except those that contain yeast. If you’re worried about not having enough flavor, add fresh herbs and aromatics like leeks, onions, celery, carrots, ginger, garlic, lemon or peppercorns.

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