Brenda Khan
Excess sodium intake is linked to adverse health outcomes, including increased blood pressure and the risk of heart disease and stroke. While sodium is necessary for maintaining plasma volume, acid-base balance, and nerve impulse transmission, most people consume more sodium than they need. This is because sodium is often hidden in prepared, packaged, and restaurant foods, making it difficult to control sodium intake. As such, it is important to reduce sodium in your diet to improve health and reduce the risk of cardiovascular events and deaths.
Why should we reduce sodium in our diet?
| Characteristics | Values |
|---|---|
| High sodium intake leads to | Increased blood pressure and risk of heart disease and stroke |
| Sodium is found in | Packaged, restaurant and processed foods |
| Sodium is also found in | Bread, milk, meat, shellfish, snack foods, condiments |
| Salt substitutes | Potassium salt |
| Healthy alternatives | Garlic, citrus juice, herbs, spices, lemon, lime, vinegar, salt-free seasonings |
| Healthy foods | Fruits, vegetables, whole grains, low-fat dairy, beans, nuts, fish, lean meats, poultry |
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What You'll Learn
Sodium increases blood pressure and the risk of heart disease and stroke
Sodium is an essential nutrient necessary for maintaining plasma volume, acid-base balance, transmission of nerve impulses, and normal cell function. However, excess sodium is linked to adverse health outcomes, primarily increased blood pressure and the risk of heart disease and stroke.
High blood pressure, or hypertension, is a significant risk factor for cardiovascular disease. Cardiovascular disease, including heart disease and stroke, is the leading cause of death in many countries. Reducing sodium intake is, therefore, one of the most effective ways to improve health and reduce the burden of these noncommunicable diseases.
The link between excess sodium and heart disease is complex and not yet fully understood. However, researchers are working to unravel this connection to develop better strategies to reduce heart disease and improve health outcomes. In the meantime, it is clear that reducing sodium intake can help lower blood pressure and, consequently, the risk of heart disease and stroke.
Most people consume more sodium than they need, and it can be challenging to reduce sodium intake due to its prevalence in the food supply. More than 70% of the sodium we eat comes from prepared, packaged, and restaurant foods. These sources often contain hidden sodium, making it difficult for people to be aware of their sodium intake. Even foods that do not taste salty, such as bread, can be major sources of sodium because they are consumed frequently.
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Processed foods are a major source of sodium
Processed foods are a significant source of sodium in our diets. In many high-income countries, and increasingly in low- and middle-income countries, a large proportion of sodium intake comes from processed foods. This includes foods like bread, cured and processed meats, and snack foods, as well as condiments such as soy sauce and fish sauce.
According to the American Heart Association, more than 70% of the sodium we consume comes from prepared, packaged, and restaurant foods. This makes it challenging for individuals to control their sodium intake. For example, a serving of fresh, unseasoned meat typically contains around 100 milligrams of sodium or less, while a serving of prepared rotisserie chicken can contain up to 400 mg of sodium due to added sodium. Similarly, a slice of bread usually contains about 100 to 200 mg of sodium, but because we eat it so frequently, it becomes a significant source of sodium in our diets.
To reduce sodium intake from processed foods, it is recommended to choose fresh, unprocessed foods whenever possible. This includes selecting fresh cuts of meat over processed meats like bacon or ham, which have high levels of added sodium. When purchasing packaged or prepared foods, it is essential to read labels and compare sodium content between brands, as it can vary significantly. Additionally, when dining out, individuals can request that no extra salt be added to their meals and opt for dishes with lower sodium content.
By being mindful of the sodium content in processed foods and making informed choices, individuals can effectively reduce their sodium intake and improve their overall health.
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Fresh foods are lower in sodium
Fresh foods are typically lower in sodium than their processed or packaged counterparts. Sodium is often added during the processing and preparation of foods, which can significantly increase their sodium content. Therefore, opting for fresh, whole foods is a simple and effective way to reduce sodium intake.
When it comes to meat, poultry, and seafood, choosing fresh or frozen options over processed varieties is key to lowering sodium intake. Processed meats, such as bacon, ham, sausage, and cold cuts, tend to have high sodium levels due to the addition of salt or brine during curing or flavour enhancement. Similarly, canned meats, such as tuna, often contain added sodium, so opting for fresh or frozen alternatives is preferable.
In the case of vegetables, buying fresh, frozen (without sauce or seasoning), or low-sodium canned options is ideal. Canned vegetables often have added sodium, but rinsing them before consumption can help reduce the sodium content. Additionally, choosing fresh herbs and spices instead of pre-made seasoning blends can further lower sodium intake.
Preparing meals from scratch using fresh ingredients is another effective strategy. Home-cooked meals tend to be lower in sodium than instant or boxed mixes because they allow for better control over the amount of sodium added. This also applies to snacks; choosing fresh, low-sodium options like carrot or celery sticks instead of pre-packaged, salty snacks can make a significant difference in overall sodium intake.
By focusing on fresh, whole foods and reducing the consumption of processed and packaged items, individuals can effectively lower their sodium intake. This approach not only helps maintain healthy sodium levels but also encourages a more balanced and nutritious diet overall.
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Salt substitutes can replace sodium with potassium
Excess sodium intake is linked to adverse health outcomes, including increased blood pressure and the risk of heart disease and stroke. Most of the sodium in our diets comes from packaged and restaurant food, not the salt shaker. As sodium is linked to adverse health outcomes, it is important to reduce sodium intake.
Salt substitutes have been around for decades and can be a great way to cut down on sodium intake. These substitutes replace some or all of the sodium with potassium chloride, a naturally occurring salt-like compound that tastes similar to sodium chloride (regular salt). Potassium chloride contains potassium, a mineral that can help lower blood pressure. This makes salt substitutes a healthy alternative for many people as they reduce sodium intake while increasing supplemental potassium.
For people who don’t like the taste of pure potassium chloride-based salt substitutes, “lite” salt products are available. These blends of sodium chloride and potassium chloride are often labelled as “low-sodium” products and have a more traditional salt taste while still containing less sodium than conventional table salt.
However, some people should avoid the extra potassium found in salt substitutes. For people with conditions such as kidney disease, heart disease, liver disease, or diabetes, salt substitutes can raise blood potassium levels to dangerous levels. Additionally, salt substitutes may also be unsafe for people taking certain blood pressure-lowering medications, including angiotensin-converting enzyme (ACE) inhibitors and potassium-sparing diuretics. It is important to consult a doctor or healthcare professional before using salt substitutes.
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The DASH diet is a low-sodium plan to reduce blood pressure
Excess sodium intake is linked to several adverse health effects, including increased blood pressure and the risk of heart disease and stroke. Most of the sodium in our diets comes from packaged, restaurant, and processed foods, rather than the salt shaker. As such, it can be challenging to control sodium consumption. The DASH (Dietary Approaches to Stop Hypertension) diet is a low-sodium plan that helps address this issue by reducing blood pressure.
The DASH diet is a flexible and balanced eating plan that promotes a heart-healthy lifestyle. It was named the "Best Heart-Healthy Diet" and the "Best Diet for High Blood Pressure" by U.S. News & World Report in 2025. This diet is not based on special foods but provides daily and weekly nutritional goals. It recommends limiting foods high in saturated fat, such as fatty meats, full-fat dairy products, and certain oils like coconut and palm oil.
When following the DASH diet, it is crucial to choose foods that help lower sodium intake. This includes eating more vegetables, fruits, whole grains, fat-free or low-fat dairy, fish, poultry, beans, nuts, and seeds, and using vegetable oils. Additionally, it is recommended to limit sodium intake by comparing labels and choosing products with the lowest sodium content. This is especially important when selecting packaged and prepared foods, as sodium levels can vary significantly between brands.
To enhance the effectiveness of the DASH diet, individuals can combine lower-sodium food versions with regular ones. This can be done gradually, allowing taste buds to adjust to reduced salt intake over time. Cooking methods such as grilling, roasting, or sautéing can also enhance natural flavors, reducing the need for added salt. Eating foods rich in potassium, like sweet potatoes, greens, tomatoes, and beans, can help counter the effects of sodium and further support blood pressure reduction.
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Frequently asked questions
Excess sodium is linked to adverse health outcomes, including increased blood pressure and the risk of heart disease and stroke.
The 2020-2025 Dietary Guidelines for Americans advises adults to consume less than 2,300 milligrams of sodium each day as part of a healthy eating pattern.
Some ways to reduce sodium in your diet include choosing fresh foods over salty, processed foods, eating more fruits and vegetables, and limiting sauces, mixes, and instant products.
Some smart swaps include choosing whole-grain corn tortillas over white flour tortillas, making your own pizza using a whole-wheat crust with low-sodium pizza sauce, and loading up sandwiches with veggies instead of salty meats and cheeses.
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