Is Salt Bad for You? How Much Sodium Do You Need?

Quick answer

You need some sodium, but most people eat far more than the recommended limit. The Dietary Guidelines recommend less than 2,300 mg of sodium a day, about 1 teaspoon of salt, while Americans average about 3,400 mg. Too much sodium raises blood pressure, which increases the risk of stroke and heart disease. Most sodium does not come from the salt shaker, it comes from packaged and prepared foods. Cutting back is possible by checking labels and cooking more at home. See a doctor if you have high blood pressure, heart, or kidney problems.

What too much sodium looks like

High sodium usually has no obvious symptoms. You cannot feel your blood pressure rising. Over time, a high-sodium diet draws water into the bloodstream, increasing blood volume and pressure, which makes the heart work harder and can damage arteries and organs.

Some people notice bloating or swelling, but that is not a reliable sign of a sodium problem. The real effect is on blood pressure, which is why it is usually found by measuring, not by feel.

Illustration of a salt shaker beside a packaged food box and a blood pressure cuff with a question mark — Illustration: most dietary sodium comes from packaged and prepared foods, not the salt shaker.

Where sodium comes from

Packaged and prepared foods provide more than 70% of dietary sodium, not the salt shaker.
Common sources include deli meats and sandwiches, pizza, burritos and tacos, soups, savory snacks, poultry, pasta dishes, burgers, and egg dishes.
Some foods that do not taste salty, such as breads and cereals, still add up over the course of a day.
Sodium also hides in additives such as monosodium glutamate, baking soda, sodium nitrite, and sodium benzoate.

Illustration of common high-sodium foods such as a deli sandwich, pizza, soup and snacks — Illustration: deli meat, pizza, soups and snacks are common sodium sources.

Is it serious?

Most people: a high-sodium diet is a long-term risk rather than an emergency. It raises blood pressure and, with it, the risk of heart attack, heart failure, stroke, kidney disease, and blindness over time.
Worth attention: if your blood pressure is creeping up, or if you eat a lot of packaged and restaurant food.
See a doctor: if you have high blood pressure, heart failure, or kidney disease, or if you take a diuretic. Sodium advice is individual, and some people are told to get more sodium, not less.

Illustration of a three-step scale of sodium risk from fine to watch to seeing a doctor — Illustration: for most people it is a long-term risk, but some conditions need a doctor’s advice.

What you can do

Read the label. The Daily Value for sodium is less than 2,300 mg. As a guide, 5% DV or less per serving is low and 20% DV or more is high.
Compare products. Similar foods can differ a lot in sodium. “Low sodium” means 140 mg or less per serving, and “reduced sodium” means at least 25% less than the regular product.
Cook more at home so you control the salt.
Watch the big sources, such as deli meat, pizza, and soups.
Use flavor instead of salt: herbs, spices, citrus, and garlic.

Remember that salt and sodium are not the same. Salt is sodium chloride, and 2,300 mg of sodium equals about 1 teaspoon of salt.

Another simple lever is eating more fresh, minimally processed food. It lowers sodium without counting milligrams, and it tends to bring other nutrients along with it.

Next step

If you have high blood pressure, heart failure, or kidney disease, talk to a healthcare provider before making big changes, because your target may differ from the general one. A simple step for most people is to check labels on the packaged foods you eat most and swap a few high-sodium items for lower-sodium versions.

FAQ

How much sodium should I have a day?

Adults should aim for less than 2,300 mg a day, which is about 1 teaspoon of table salt. Most people get around 3,400 mg.

Is salt the same as sodium?

No. Table salt is sodium chloride. Sodium is the part that affects blood pressure. One teaspoon of salt has about 2,300 mg of sodium.

Does cutting salt mean bland food?

Not necessarily. Herbs, spices, citrus, and garlic add flavor, and cutting back gradually helps your taste adjust over time.

Can some people need more salt?

Yes. People who sweat heavily for long periods, and some medical conditions, can require more sodium. Ask a doctor if you are unsure.

Does a high-sodium diet cause high blood pressure for everyone?

It raises blood pressure on average across populations, but the effect varies from person to person. Salt sensitivity differs.

Do I need a salt substitute?

Some salt substitutes swap part of the sodium for potassium. They can help some people, but anyone with kidney disease or on certain medicines should check with a doctor first.

Sources

U.S. Food and Drug Administration: Sodium in Your Diet. https://www.fda.gov/food/nutrition-education-resources-materials/sodium-your-diet

Disclaimer

This article is for information only and is not medical advice. Always consult a qualified healthcare provider about your health.

Reviewed by the VI Editorial Team. Last reviewed: October 6, 2026