Most adults should consume less than one teaspoon of salt per day. That’s the equivalent of about 2,300 milligrams of sodium, which is the federal guideline in the United States. The World Health Organization sets the bar slightly lower, recommending less than 5 grams of salt daily, or just under a teaspoon. Either way, the answer is the same: one level teaspoon is your ceiling, not your target.
What the Guidelines Actually Recommend
One level teaspoon of table salt contains roughly 2,300 milligrams of sodium. That’s the daily limit recommended by the U.S. Dietary Guidelines for teens and adults. The WHO’s recommendation of less than 2,000 milligrams of sodium (less than 5 grams of salt) works out to slightly less than a teaspoon.
The American Heart Association goes further, recommending no more than 1,500 milligrams per day for all adults. That’s about two-thirds of a teaspoon. This lower target was originally aimed at people with hypertension, diabetes, chronic kidney disease, and adults over 51, but the AHA now considers it the ideal limit for everyone.
Children need significantly less. The recommended daily sodium limits by age are:
- Ages 1 to 3: less than 1,200 mg (about half a teaspoon of salt)
- Ages 4 to 8: less than 1,500 mg (about two-thirds of a teaspoon)
- Ages 9 to 13: less than 1,800 mg (about three-quarters of a teaspoon)
- Ages 14 to 18: less than 2,300 mg (about one teaspoon)
How Much People Actually Eat
The average American consumes about 3,400 milligrams of sodium per day, which is nearly 1.5 teaspoons of salt. That’s roughly 50% more than the federal limit and more than double the AHA’s ideal target. Most people are eating far more salt than they realize, because the bulk of it doesn’t come from the salt shaker on the table.
The vast majority of sodium in the typical diet comes from processed, packaged, and restaurant foods. Bread, deli meats, canned soups, frozen meals, pizza, sauces, and snack foods are some of the biggest contributors. The salt you add while cooking or at the table accounts for a relatively small share of your total intake.
Why the Limit Matters
When you eat more sodium than your body needs, your kidneys hold onto extra water to dilute it. That extra fluid increases the volume of blood flowing through your vessels, which raises blood pressure. Over time, sustained high blood pressure damages artery walls, strains the heart, and increases the risk of heart attack, stroke, and kidney disease.
Not everyone’s blood pressure responds to sodium the same way. Some people are “salt-sensitive,” meaning their blood pressure rises noticeably with higher sodium intake. Others can consume more without the same effect. The challenge is that there’s no simple test to determine which category you fall into, which is why population-wide limits exist.
How Much Your Body Actually Needs
Your body does need some sodium. It’s essential for nerve signaling, muscle contraction, and maintaining fluid balance. But the amount required is surprisingly small: a healthy, active adult needs only 200 to 500 milligrams per day. That’s less than a quarter teaspoon of salt, and it’s almost impossible not to reach this amount through normal eating, even without adding any salt at all.
How to Track Your Intake
The simplest tool you already have is the nutrition facts label. The FDA sets the Daily Value for sodium at 2,300 milligrams, so the percent daily value (%DV) on any packaged food tells you exactly what fraction of a full day’s worth that serving contains. A good rule of thumb: 5% DV or less per serving is low sodium, while 20% DV or more is high.
Because most excess sodium comes from foods that are already salted before you buy them, the most effective strategy isn’t putting away the salt shaker. It’s choosing lower-sodium versions of the packaged and prepared foods you eat most often. Comparing labels across brands can reveal surprising differences. Two nearly identical cans of soup might vary by several hundred milligrams per serving.
Cooking at home with whole ingredients gives you the most control. Fresh vegetables, plain grains, unseasoned meats, and legumes are all naturally very low in sodium. When you season them yourself, you typically add far less salt than a manufacturer or restaurant would.