Dietary Sodium: How Much Is Healthy and Where It Hides

Sodium is an essential mineral. The body needs a small amount of it to balance fluids, carry nerve signals, and help muscles contract, and the American Heart Association notes that the body needs less than 500 mg of sodium a day to function properly. The problem is not sodium itself but the amount most people take in. Diets across the world supply far more than the body needs, and the gap between how much sodium people consume and how much health authorities recommend is one of the wider and more consistent gaps in nutrition.

This guide is general and educational. It explains how much sodium most adults are advised to consume, why the figures from different authorities differ, where dietary sodium actually comes from (a question with a surprising answer for many people), how sodium is linked to blood pressure and cardiovascular disease, and practical ways to eat less of it without obsessing. A recurring source of confusion is the difference between sodium and salt, so this guide states clearly each time whether a number refers to sodium or to salt. It does not set a personal target for any individual; people with high blood pressure, kidney or heart conditions, or who take certain medications should follow the target their clinician gives them.

The essentials at a glance

• The World Health Organization recommends adults consume less than 2,000 mg of sodium a day, equivalent to less than 5 g of salt a day, a recommendation it rates as strong (WHO).
• The American Heart Association recommends no more than 2,300 mg of sodium a day for most adults, and sets an ideal limit of no more than 1,500 mg a day; for context, the body needs less than 500 mg a day (AHA).
• Sodium and salt are not the same thing: salt (sodium chloride) is about 40% sodium by weight, so one teaspoon of salt holds roughly 2,300 mg of sodium, and 5 g of salt holds about 2,000 mg of sodium (FDA; WHO).
• Most people eat far more than is recommended: the global mean adult intake was about 4,278 mg of sodium a day (around 11 g of salt) in 2021, more than double the WHO recommendation (WHO).
• Most dietary sodium does not come from the salt shaker: more than 70% of it comes from packaged, prepared, and restaurant foods (AHA; FDA).
• Diets high in sodium raise blood pressure, which increases the risk of cardiovascular disease, stroke, and heart disease; reducing intake toward the recommended level lowers blood pressure and risk (WHO).

How much sodium a day: WHO and AHA side by side

Two major authorities give the headline numbers, and they are close but not identical, so it helps to see them side by side. The World Health Organization recommends that adults consume less than 2,000 mg of sodium a day, which it states is equivalent to less than 5 g of salt a day, and it rates this as a strong recommendation. The American Heart Association recommends no more than 2,300 mg of sodium a day for most adults, while setting an ideal target of no more than 1,500 mg a day, a level it links to greater blood-pressure benefit. The United States Dietary Guidelines for Americans, in the 2025-2030 edition, also limit sodium to less than 2,300 mg a day for people aged 14 and older.

The numbers are best read as a consistent message rather than a contradiction. All of them sit far below what most people actually eat, all of them are framed as upper limits rather than goals to reach, and the direction is the same: less than now, for nearly everyone. The WHO figure of under 2,000 mg and the AHA ideal of under 1,500 mg are the stricter targets; the 2,300 mg figure used by the AHA as a ceiling and by the US guidelines is the more lenient one. None of these is a personal prescription. A clinician may set a different target for a particular person, especially someone with high blood pressure or a heart or kidney condition.

Keeping the units straight is what makes these numbers usable. Sodium and salt are different things: salt, or sodium chloride, is only about 40% sodium by weight, so a gram of salt is not a gram of sodium. A useful rule of thumb is that salt weighs roughly two and a half times its sodium content, which is why less than 5 g of salt corresponds to less than 2,000 mg of sodium. Nutrition labels in many countries list sodium in milligrams, while everyday talk about a low-salt diet usually means salt in grams. This guide states sodium in milligrams and salt in grams each time, so the two are never confused.

Where dietary sodium actually comes from

The most useful thing to understand about cutting sodium is that the salt shaker is not where most of it comes from. According to the American Heart Association, more than 70% of the sodium people eat comes from packaged, prepared, and restaurant foods, not from salt added at the table or even during home cooking. The United States Food and Drug Administration makes the same point. This changes the strategy entirely: putting down the salt shaker helps a little, but the larger lever is the food chosen in the first place.

The reason is that sodium is used heavily in food manufacturing for flavour, preservation, and texture, and it accumulates in places that do not taste especially salty. Bread and rolls, cured and processed meats, pizza, soups, sandwiches, savoury snacks, sauces and condiments, cheese, and many ready meals are common high contributors, often more because of how much is eaten than because each bite tastes salty. Two slices of bread can carry as much sodium as a portion of salted snacks, which is why sodium is described as hidden: it is there in foods most people would not flag as salty.

This is also why ultra-processed foods overlap so closely with high-sodium diets. Foods that have been heavily processed and packaged tend to carry more sodium than their whole-food counterparts, a pattern explored in the guide on ultra-processed foods. The practical consequence is encouraging rather than discouraging: because so much sodium is built into manufactured food, shifting toward more whole and minimally processed foods, and reading labels on packaged ones, does more to lower intake than agonising over the pinch of salt added while cooking.

Sodium, blood pressure, and heart health

The reason sodium gets so much attention is its effect on blood pressure. The World Health Organization states that the primary health effect associated with diets high in sodium is raised blood pressure, which increases the risk of cardiovascular disease. The 2012 WHO guideline puts it directly: it recommends reducing sodium intake to reduce blood pressure and the risk of cardiovascular disease, stroke, and coronary heart disease in adults, and rates the recommendation as strong. Lowering sodium toward the recommended level tends to lower blood pressure, and lower blood pressure across a population is linked to fewer strokes and heart events.

The scale of the problem is large. The WHO reports that the global mean adult intake was about 4,278 mg of sodium a day, around 11 g of salt, in 2021, which is more than double its recommendation of less than 2,000 mg. It also estimates that 1.7 million deaths each year were associated with consuming too much sodium in 2023. These are population-level figures describing an association, not a verdict on any one person's diet, but they explain why sodium reduction is a public-health priority in so many countries.

It is worth keeping the framing balanced. Sodium is essential, and the 2025-2030 Dietary Guidelines for Americans note that sodium and electrolytes are needed for hydration, so the goal is not to drive intake as low as possible for everyone. For the great majority of people the realistic and evidence-backed aim is simply to move from the very high intakes that are common today toward the recommended range. The blood-pressure benefit of eating less sodium is most relevant to people who already have high blood pressure, but the population-wide recommendation reflects that most people are well above the recommended level to begin with.

Practical ways to eat less sodium

Because most sodium is built into packaged and restaurant food rather than sprinkled on at home, the most effective steps are about food choices and labels rather than willpower at the table. Reading the sodium figure on nutrition labels, and comparing similar products, is one of the clearest moves: among breads, soups, sauces, and ready meals, the sodium content of two seemingly similar items can differ widely, and choosing the lower one repeatedly adds up. Many countries also label sodium per serving, so checking the serving size matters.

Shifting the balance of the diet toward whole and minimally processed foods is the larger lever. Fresh and frozen vegetables, fruit, plain grains, eggs, and fresh meat and fish are naturally low in sodium before anything is added to them, while their processed and packaged versions, such as cured meats, canned soups, and savoury snacks, tend to carry much more. Cooking at home more often gives direct control over how much salt goes in, and flavour can be built with herbs, spices, citrus, garlic, and other seasonings rather than relying on salt alone. Rinsing canned beans and vegetables can lower their sodium, and asking for sauces and dressings on the side when eating out reduces the amount that arrives on the plate.

The taste for salt also adjusts. Preferences for saltiness are partly learned, and many people find that after a few weeks of gradually lower-sodium eating, food that once tasted normal starts to taste too salty. None of this requires a perfect or joyless diet. The realistic aim for most people is steady movement from very high intakes toward the recommended range, not an obsessive count of every milligram.

Frequently asked questions

How much sodium per day is healthy?

The main authorities give close but slightly different limits, all framed as upper limits rather than targets to reach. The World Health Organization recommends adults consume less than 2,000 mg of sodium a day, equivalent to less than 5 g of salt. The American Heart Association recommends no more than 2,300 mg a day for most adults, with an ideal limit of no more than 1,500 mg a day. The 2025-2030 US Dietary Guidelines also use less than 2,300 mg a day for people aged 14 and older. For context, the body needs less than 500 mg a day. These are general figures, not personal prescriptions; a clinician may set a different target for someone with high blood pressure or a heart or kidney condition.

Is 2,300 mg of sodium too much?

It depends which authority is used. The American Heart Association and the 2025-2030 US Dietary Guidelines treat 2,300 mg of sodium a day as an upper limit for most adults, so staying at or below it is the standard. The American Heart Association goes further and sets an ideal limit of no more than 1,500 mg a day, and the World Health Organization recommends staying under 2,000 mg a day, so by those stricter measures 2,300 mg is above the preferred target. In practice 2,300 mg is well below what most people actually eat, so for the great majority of people it represents a reduction rather than an excess. People with high blood pressure or a heart or kidney condition should follow whatever target their clinician sets.

What is the difference between sodium and salt?

Salt is the compound sodium chloride, and sodium is just one part of it. By weight, table salt is only about 40% sodium and about 60% chloride, so a gram of salt is not a gram of sodium. As a rough rule, salt weighs about two and a half times its sodium content, which is why one teaspoon of salt holds roughly 2,300 mg of sodium and 5 g of salt holds about 2,000 mg of sodium. Health recommendations and nutrition labels usually state sodium in milligrams, while everyday talk about a low-salt diet usually means salt in grams, so it helps to notice which one a figure refers to.

What foods are high in sodium?

Most dietary sodium comes from packaged, prepared, and restaurant foods rather than the salt shaker; the American Heart Association puts the figure at more than 70%. Common high contributors include bread and rolls, cured and processed meats, pizza, soups, sandwiches, savoury snacks, sauces and condiments, cheese, and many ready meals. Some of these, such as bread, do not taste especially salty, which is why sodium is often described as hidden, and the total adds up through how much is eaten as much as through how salty each bite is. Whole and minimally processed foods, such as fresh vegetables, fruit, plain grains, eggs, and fresh meat and fish, are naturally much lower in sodium before anything is added.

Does cutting sodium lower blood pressure?

Yes, that is the central reason for the recommendations. The World Health Organization states that the primary health effect of diets high in sodium is raised blood pressure, which increases the risk of cardiovascular disease, and its 2012 guideline recommends reducing sodium specifically to lower blood pressure and the risk of cardiovascular disease, stroke, and coronary heart disease in adults, rating that recommendation as strong. Lowering sodium toward the recommended range tends to lower blood pressure, and the benefit is most relevant to people who already have raised blood pressure. The effect is described at the level of populations and general guidance; an individual's response can vary, and anyone managing blood pressure should follow their clinician's advice.

Is sea salt or pink salt healthier than table salt?

Not in terms of sodium. Sea salt, pink salt, and ordinary table salt are all mostly sodium chloride, so by weight they deliver a similar amount of sodium, and the health recommendations are about total sodium intake rather than the type of salt. Specialty salts may differ slightly in trace minerals, crystal size, and whether iodine is added, but none of those differences meaningfully change the sodium load. What matters far more for intake is the total amount of sodium across the whole diet, most of which comes from packaged and restaurant foods, not which variety of salt is used at the table.

Can sodium be too low?

Sodium is an essential mineral, so it is needed, not avoided entirely. The body needs a small amount to balance fluids and support nerve and muscle function, and the 2025-2030 US Dietary Guidelines note that sodium and electrolytes are needed for hydration. For most people the realistic problem is far too much sodium rather than too little, so the practical goal is moderation, moving from very high intakes toward the recommended range, not driving sodium as low as possible. Very low sodium is not a do-it-yourself target for the general public, and people who are very physically active, who are older, or who have a condition affecting fluid balance, as well as anyone given a specific target by a clinician, should be guided by professional advice rather than cutting aggressively on their own.

How can someone reduce their sodium intake?

Because most sodium is built into packaged and restaurant food rather than added at the table, the most effective steps are about food choices. Reading sodium figures on nutrition labels and comparing similar products helps, since two seemingly similar items can differ widely. Shifting the diet toward whole and minimally processed foods, which are naturally low in sodium, is the larger lever, while cooking at home gives direct control over how much salt goes in. Flavour can be built with herbs, spices, citrus, and garlic rather than salt alone, rinsing canned beans and vegetables lowers their sodium, and asking for sauces on the side when eating out reduces the amount on the plate. The taste for salt tends to adjust over a few weeks, so the realistic aim is steady reduction rather than a perfect count of every milligram.

References

1. 1Sodium reduction (fact sheet) · World Health Organization. Accessed 2026-06-14.
2. 2Guideline: Sodium intake for adults and children (2012), full text (NCBI Bookshelf NBK133292) · World Health Organization / National Library of Medicine. Accessed 2026-06-14.
3. 3How much sodium should I eat per day? · American Heart Association. Accessed 2026-06-14.
4. 4Sodium in Your Diet · U.S. Food and Drug Administration. Accessed 2026-06-14.
5. 5Dietary Guidelines for Americans, 2025-2030 (10th Edition), sodium recommendation for the general population aged 14 and older · U.S. Department of Agriculture and U.S. Department of Health and Human Services. Accessed 2026-06-14.
6. 6How Do the 2025-2030 Dietary Guidelines for Americans Measure Up for Cardiovascular Health? (corroborates the <2,300 mg/day sodium limit) · American College of Cardiology. Accessed 2026-06-14.