How Much Sodium Per Day? DRI Explained With Food Examples

Sodium Recommendations by Authority

What the 2,300mg Number Actually Means

The 2,300mg figure originates from the National Academies of Sciences, Engineering, and Medicine's Dietary Reference Intakes framework — specifically from a category called the Chronic Disease Risk Reduction (CDRR) intake. The CDRR is defined as the level above which reducing intake is expected to reduce the risk of chronic disease in apparently healthy individuals. It is not a recommended amount to consume. It is a threshold designed to signal when intake is high enough to warrant concern. This distinction matters because many people interpret the 2,300mg Daily Value as a safe daily target rather than a ceiling. The Adequate Intake for sodium — the level estimated to meet the needs of most healthy adults — is actually 1,500mg per day, set by the same National Academies framework. There is no RDA for sodium because the data needed to establish one (a precise dose-response curve linking intake to health outcomes across diverse populations) do not yet exist with sufficient certainty. The body's minimum physiological sodium requirement is approximately 500mg per day — the amount needed to maintain fluid balance, nerve conduction, and muscle function. At the opposite end, the vast majority of sodium-related health risk accumulates well below the levels needed to cause acute toxicity. Chronic overconsumption, not a single large dose, is what drives the cardiovascular burden associated with high sodium intake.

Sodium Content of Common Foods

Where Sodium Actually Comes From

Most dietary sodium does not come from the salt shaker. According to the CDC, approximately 70% of the sodium Americans consume comes from processed and restaurant foods — it is added during manufacturing before the food ever reaches a kitchen. Another 15% occurs naturally in whole foods (meats, dairy, some vegetables). About 11% is added during cooking at home, and only around 5% is sprinkled on at the table. This breakdown has two important implications. First, reducing or eliminating table salt has a limited effect on overall sodium intake — cutting out the shaker entirely removes only a small fraction of total consumption. Second, the most effective intervention is choosing less-processed foods. A diet built around whole grains, fresh proteins, legumes, and vegetables is structurally low in sodium before any deliberate effort is made. The food categories that drive the most sodium in the American diet, according to CDC analysis, are bread and rolls (the top contributor by volume despite modest per-slice amounts), pizza, sandwiches, cold cuts and cured meats, soups, burritos and tacos, savory snacks, and cheese. None of these categories is obviously salty in the way that a bag of pretzels is — which is part of why sodium intake is so difficult to self-assess without reading labels.

Who Needs to Be More Careful

The 2,300mg DGA limit is intended for healthy adults. For certain groups, a lower target — closer to the AHA's 1,500mg — is clinically meaningful and supported by evidence. People with hypertension are the primary target. Blood pressure responds to sodium intake in a dose-dependent way for most individuals: as sodium intake rises, blood pressure tends to rise with it, and reducing intake produces reductions in systolic and diastolic pressure. The DASH-Sodium trial found that reducing sodium from 2,300mg to 1,500mg per day produced an average additional reduction in systolic blood pressure of approximately 3 mmHg in participants already following the DASH dietary pattern. Small reductions at the population level translate to meaningful decreases in stroke and heart attack risk. People with chronic kidney disease (CKD) need to manage sodium carefully because impaired kidneys are less able to excrete it, leading to fluid retention and worsening hypertension — which in turn accelerates kidney damage. Those with heart failure face a similar dynamic, where sodium retention drives fluid buildup and increases cardiac workload. Research has also consistently shown that African Americans, older adults (over 50), and people with diabetes tend to be more sodium-sensitive — meaning their blood pressure responds more strongly to changes in sodium intake than the general population. For these groups, the AHA's 1,500mg target is particularly relevant and worth discussing with a physician or registered dietitian.

Practical Strategies for Reducing Sodium

Reducing sodium intake does not require eliminating salt from cooking entirely — it requires understanding where sodium is coming from and making targeted changes in the right places. Reading nutrition labels is the most direct tool available. The sodium per serving line on a Nutrition Facts panel makes it straightforward to compare products and spot high-sodium items before they enter the kitchen. As a rough benchmark, a food with more than 600mg of sodium per serving is high; one with 140mg or less per serving qualifies as low sodium under FDA definitions. Choosing low-sodium versions of canned beans, canned tomatoes, broths, and soups can remove hundreds of milligrams from a meal without changing the recipe. Cooking from scratch shifts control over sodium back to the cook. A homemade chicken soup built from fresh ingredients and a low-sodium stock will have a fraction of the sodium of a canned version, even with salt added during cooking. Herbs, spices, acid (lemon juice, vinegars), and aromatics like garlic and onion are effective tools for building flavor without relying on salt. Toasting spices before using them intensifies flavor further. Rinsing canned foods — beans especially — under running water removes roughly 40% of the sodium added during the canning process. It is a small step that adds up across a week of meals. Finally, being deliberate about restaurant meals matters. Restaurants cook for palatability, not health targets, and sodium levels in restaurant food are often extraordinarily high — a single restaurant entrée can exceed the full daily DGA limit. Requesting sauces and dressings on the side, and reserving higher-sodium restaurant choices for occasional meals rather than daily habits, makes a meaningful cumulative difference.

Key Takeaways

• The 2,300mg/day figure on Nutrition Facts labels is the Dietary Guidelines' Chronic Disease Risk Reduction ceiling — it is not a recommended target or an Adequate Intake.
• The National Academies' Adequate Intake for sodium is 1,500mg/day; the body's minimum physiological need is approximately 500mg/day, far below what most people consume.
• The AHA recommends an ideal limit of 1,500mg/day for cardiovascular protection; the WHO recommends under 2,000mg/day; the average American consumes roughly 3,400mg/day.
• About 70% of dietary sodium comes from processed and restaurant foods, not from salt added at the table or during home cooking — reducing table salt has limited impact on total intake.
• People with hypertension, chronic kidney disease, heart failure, diabetes, or who are African American or over age 50 tend to be more sodium-sensitive and benefit most from staying near the 1,500mg target.
• The most effective strategies are reading nutrition labels, choosing less-processed foods, cooking from scratch, rinsing canned goods, and being selective about restaurant meals.