Most health authorities recommend staying under 2,300 milligrams of sodium per day, which is roughly one teaspoon of table salt. The average American consumes about 3,400 mg daily, nearly 50% more than that limit. Depending on your health goals and risk factors, you may benefit from going even lower.
The Main Guidelines and How They Differ
Three major recommendations exist, and they target slightly different goals. The Dietary Guidelines for Americans sets the general ceiling at 2,300 mg per day for adults. The World Health Organization recommends under 2,000 mg per day (equivalent to less than 5 grams of salt). The American Heart Association goes further, calling 1,500 mg per day the ideal target for cardiovascular health.
These aren’t contradictory. Think of them as a spectrum: 2,300 mg is the upper boundary for the general population, and 1,500 mg is the sweet spot if you’re actively trying to protect your heart. Research confirms that reducing sodium from 2,400 mg to 1,500 mg produces a measurably greater drop in blood pressure beyond what the first reduction achieves.
Why Sodium Matters for Blood Pressure
Your body tightly regulates the concentration of sodium in your blood. When you eat more sodium than you need, your body retains extra water to keep that concentration balanced. This expands the volume of fluid circulating through your blood vessels, which raises the pressure against artery walls.
That’s the simplified version. The full picture involves several overlapping effects: increased resistance in small blood vessels, changes to how artery walls function and remodel over time, and shifts in how your nervous system regulates heart rate and vessel tone. Over years, this sustained pressure damages arteries and increases the risk of heart disease and stroke. The process is gradual, which is why most people don’t feel the effects of a high-sodium diet until damage has already accumulated.
Sodium and Salt Are Not the Same Thing
This trips people up when reading labels. Table salt is sodium chloride, and sodium makes up about 40% of its weight. So 5 grams of salt contains roughly 2,000 mg of sodium. When a guideline says “less than 2,300 mg of sodium,” that translates to about one level teaspoon of salt, total, from all sources throughout the day. Most of that sodium doesn’t come from your salt shaker. It’s already in the food before you sit down to eat.
Where the Sodium Actually Comes From
CDC data from a national dietary survey found that just 10 food categories account for 40% of sodium intake in the U.S. The biggest contributors may surprise you:
- Deli meat sandwiches: 6.3% of total sodium intake
- Pizza: 5.4%
- Burritos and tacos: 5.3%
- Soups: 4.1%
- Savory snacks (chips, crackers, popcorn): 3.8%
- Poultry dishes: 3.7%
- Pasta dishes: 3.0%
- Vegetables (prepared, not raw): 2.9%
- Burgers: 2.8%
- Eggs and omelets: 2.7%
Notice that several of these are restaurant or packaged foods, not inherently salty ingredients. Plain chicken breast is low in sodium; a seasoned rotisserie chicken from the deli is not. The vegetables category refers to prepared or canned versions, not fresh produce. This is why cooking at home with whole ingredients is the single most effective way to cut sodium without obsessing over every milligram.
Potassium Changes the Equation
Sodium doesn’t act alone. Potassium works as a counterbalance, helping your kidneys excrete excess sodium and relaxing blood vessel walls. The WHO recommends at least 3,510 mg of potassium per day alongside the sodium limit. Research tracking cardiovascular events over time found that a sodium-to-potassium ratio at or below 1:1 was associated with meaningfully lower stroke risk.
In practical terms, this means eating more fruits, vegetables, beans, and potatoes (all rich in potassium) matters just as much as eating less sodium. Most people fall short on potassium while exceeding sodium, which pushes the ratio in the wrong direction on both ends.
Guidelines for Children and Teens
Kids need less sodium than adults, and the limits scale by age:
- Ages 1 to 3: less than 1,200 mg per day
- Ages 4 to 8: less than 1,500 mg per day
- Ages 9 to 13: less than 1,800 mg per day
- Ages 14 to 18: less than 2,300 mg per day
Children’s blood pressure patterns begin forming early, and high sodium intake during childhood tracks into adult habits. The same processed foods driving adult sodium intake, including pizza, packaged snacks, and fast food, are staples of many kids’ diets.
How to Estimate Your Intake
The Nutrition Facts label on packaged foods lists sodium in milligrams per serving. A useful shortcut: anything with more than 600 mg per serving is high-sodium. Anything under 140 mg qualifies as “low sodium” by FDA standards. Restaurant meals are harder to gauge, but a single entrée at a sit-down restaurant commonly contains 1,000 to 2,000 mg.
You don’t need to hit an exact number every day. Sodium intake averages out over time, so a single high-sodium meal won’t undo a generally moderate diet. The goal is shifting your baseline. If you’re at the average of 3,400 mg and want to reach 2,300, that often means one or two substitutions per day: choosing fresh chicken over deli meat, rinsing canned beans, cooking soup from scratch instead of opening a can, or cutting back on salty snacks. Each small swap removes a few hundred milligrams, and those add up quickly.