most guidelines cap sodium at 2,300 mg per day — about one teaspoon of salt — while the WHO draws the line at 2,000 mg, or 5 g of salt. The average American eats around 3,400 mg, and 70–80% of it comes from packaged and restaurant food, not the shaker.
Salt gets blamed for more health problems than almost any other ingredient, yet your body cannot function without sodium. Let's find where the line actually sits — in milligrams and teaspoons — see where most of your salt really hides, and cover the one case where you genuinely need more.
01. Why your body needs sodium at all
Table salt is roughly 40% sodium, and sodium is a core electrolyte. It holds water, maintains blood volume, and drives nerve signals and muscle contractions — every heartbeat and every rep runs on it.
The problem is the dose. A chronic sodium surplus makes your body retain extra water, blood volume creeps up, and pressure on your artery walls rises with it. Over the years, that's the biggest dietary driver of high blood pressure, dragging heart, vessel, and kidney risks along behind it. The good news: it works in reverse — most people see blood pressure respond within weeks of cutting back.
02. How much sodium per day: the real numbers
So how much sodium per day is actually fine? The major health organizations agree within a narrow range:
| Benchmark | Sodium, mg/day | Salt equivalent | Visual |
|---|---|---|---|
| WHO recommendation | under 2,000 | 5 g | one level teaspoon |
| U.S. Dietary Guidelines | under 2,300 | about 5.8 g | a bit over a teaspoon |
| AHA ideal (high blood pressure) | about 1,500 | about 3.8 g | three-quarters of a teaspoon |
| What people actually eat | 3,000–4,000+ | 8–10+ g | two teaspoons or more |
U.S. labels list sodium, not salt; the conversion is sodium in grams × 2.5. A canned soup with 800 mg per serving is carrying 2 g of salt — a third of your daily budget in one bowl.
03. Where the salt is actually hiding
The shaker is a minor player. Most sodium arrives in foods that don't even taste salty:
- bread and rolls — 400–500 mg of sodium per 2 slices;
- deli meats and sausages — 800–1,400 mg per 100 g (3.5 oz);
- hard cheese — 600–800 mg per 100 g;
- soy sauce — around 900 mg per tablespoon;
- pickles and olives — 800–1,200 mg per 100 g;
- instant noodles and soups — 1,500–2,000 mg per package;
- chips and salty snacks — 500–700 mg per 100 g.
A single ham-and-cheese sandwich can burn through a third of your day's sodium before anything even looks salty.
04. Athletes, heat, and sweat: when you need more
Sweat carries sodium out along with water — roughly 500–1,000 mg per liter, more if you're a "salty sweater" with white streaks on dark shirts. After a normal one-hour gym session, regular meals replace it easily.
Long efforts are different. Past 60–90 minutes of running, cycling, or field sports in the heat, sodium losses add up — and chugging plain water by the liter can dilute your blood sodium to risky levels. That's when electrolyte drinks, or simply saltier food before and after, earn their place. If you train long and hot, aggressive salt restriction works against you.
the fastest label skill there is — check the % Daily Value for sodium. 20% DV or more per serving is a lot; 5% or less is low. Two seconds per package puts you in control of half your daily budget.
05. How to cut back without eating cardboard
You're not aiming for zero — just back into the 2,000–2,300 mg lane. The reliable moves are boring but effective: cook at home more often — restaurant and packaged versions of the same dish routinely carry two to three times the sodium — salt food at the end of cooking so each gram hits harder, and take the shaker off the table.
Flavor doesn't have to suffer. Acid — lemon juice, vinegar — plus garlic, herbs, spices, and smoked paprika create a "seasoned" impression with zero sodium. And push potassium — vegetables, fruit, potatoes, beans — the physiological counterweight to sodium. Give it 2–3 weeks: your taste buds recalibrate, and once-normal food starts tasting oversalted — the sign your new baseline has stuck.
The bottom line
Aim for under 2,300 mg of sodium a day — ideally closer to 2,000 — about one teaspoon of salt counting everything hidden in bread, cheese, and deli meat. The lever that matters is packaged and restaurant food, not your shaker: read labels and cook more. Nobody needs a zero-salt diet, and long sweaty sessions are the one time to add sodium back on purpose. Cut gradually — your palate handles the rest within weeks.
This material is for informational purposes and does not replace medical advice.
