You can raise low sodium levels naturally by adding salt to your food, drinking electrolyte drinks that contain sodium, and treating the underlying cause — which is often a medication, a gut problem, or drinking too much fluid. Sodium is an electrolyte that keeps fluid balanced around your cells and helps nerves and muscles work. When it drops too low, the fix depends on why it fell.
Most people get far more sodium than they need from everyday food, so low sodium is rarely about eating too little salt. It usually means the body is losing sodium or holding too much water. That difference matters, because it changes what actually helps.
What Counts as Low Sodium?
A normal blood sodium level is about 135 to 145 milliequivalents per liter (mEq/L). Below 135 is called hyponatremia. It is one of the most common electrolyte problems doctors see, especially in older adults and people in the hospital.
Mild cases may cause no symptoms at all and turn up only on a blood test. As sodium falls further, symptoms can include headache, confusion, nausea, tiredness, and muscle cramps. Severe hyponatremia can cause seizures, stupor, and coma. That is a medical emergency, not something to manage at home.
One point people often miss: low sodium on a blood test does not always mean the body is short on sodium. In many cases the body has plenty of sodium but too much water, which dilutes it. This is why drinking more water is sometimes the wrong move — it can make certain types of hyponatremia worse.
How To Increase Sodium Levels In Body Naturally
The natural approach depends on the cause. If sodium is low because you are losing it — through sweat, vomiting, diarrhea, or certain medications — replacing sodium makes sense. If it is low because your body is holding excess water, the answer is usually to address the water balance, not to pile on salt.
Practical steps that fit the first situation include:
- Add ordinary table salt to meals. Salt is sodium chloride, and it is the most direct food source of sodium.
- Choose foods that are naturally high in sodium, such as cheese, salted nuts, olives, pickles, cured meats, and canned soups.
- Use an electrolyte drink that lists sodium on the label. Sports drinks vary widely, and some contain very little sodium.
- Drink salted broth or bouillon, which delivers sodium and fluid together.
For people whose low sodium comes from a medical condition or medication, food changes alone may not be enough. Some causes need a doctor to adjust treatment. Do not assume that eating more salt will fix a low sodium reading until you know why it is low.
What Usually Causes Low Sodium?
The causes fall into a few broad groups, and identifying the right one is the key step. Common causes include:
- Medications. Diuretics (water pills) are a frequent culprit. Some antidepressants and other drugs can also lower sodium.
- Fluid imbalance. Drinking large amounts of water, especially during endurance exercise, can dilute sodium dangerously.
- Hormonal and kidney problems. Conditions affecting the kidneys, thyroid, or adrenal glands can disturb sodium balance.
- Heart, liver, and kidney disease. These can cause the body to retain water, which dilutes sodium.
- Gut losses. Vomiting, diarrhea, and some bowel conditions cause sodium loss.
- Age. Older adults are more prone to hyponatremia, partly because of changes in kidney function and thirst.
This is why a low sodium result should be investigated rather than simply treated with more salt. The cause determines the fix.
Which Foods and Drinks Are High in Sodium?
If you need to raise sodium through food, knowing which foods carry the most helps. The table below shows approximate sodium content based on standard nutrition data. Values vary by brand and preparation, so check labels.
| Food or drink | Approximate sodium |
|---|---|
| Table salt, 1 teaspoon | About 2,300 mg |
| Canned chicken noodle soup, 1 cup | Roughly 800–900 mg |
| Cheddar cheese, 1 ounce | About 170–180 mg |
| Salted almonds, 1 ounce | About 90–100 mg |
| Pickles, 1 medium spear | About 300 mg |
| Bread, 1 slice | About 120–150 mg |
For context, US dietary guidelines suggest most adults keep sodium under 2,300 mg per day. That guidance is aimed at the general population, not at people with a diagnosed sodium deficiency. If a doctor has told you to raise your sodium, follow that advice over general population limits.
When Should You Not Add More Salt?
Adding salt is not the right move for everyone with a low sodium reading. In hyponatremia caused by excess water retention — common in heart failure, liver disease, and some kidney problems — extra salt can worsen fluid buildup. It can raise blood pressure and add strain.
People with high blood pressure, heart disease, or kidney disease should not raise sodium on their own without medical guidance. The same applies to anyone taking diuretics or other medications that affect sodium. In these cases, a doctor needs to review the cause and adjust treatment.
There is also a real risk in correcting sodium too fast. When sodium has been low for a while, raising it quickly can cause serious harm to the brain. This is a genuine clinical concern, which is why severe hyponatremia is corrected in a hospital under close monitoring. The lesson for home care: gradual changes, and a doctor’s input when the cause is unclear.
How Is Low Sodium Treated by Doctors?
Medical treatment depends on severity and cause. For mild cases, a doctor may adjust or stop a medication that is lowering sodium, or recommend changes to fluid intake. For moderate to severe cases, treatment can include intravenous fluids or medications, and it is done with careful monitoring.
Some clinicians recommend fluid restriction for certain types of hyponatremia, where the body is holding too much water. This is common clinical practice, though the best approach varies by patient. The point is that treatment is tailored to the cause, not applied the same way to everyone.
If you have a low sodium result and symptoms like confusion, severe headache, vomiting, or muscle weakness, seek medical care promptly. Those signs can point to a more serious problem.
Can You Prevent Low Sodium?
Prevention focuses on the situations most likely to cause it. During long or intense exercise, replace fluids with drinks that contain sodium rather than plain water alone. If you take a diuretic or another medication that affects sodium, ask your doctor whether your levels should be checked.
Older adults should be aware that thirst becomes a less reliable guide with age. Drinking extremely large amounts of water, especially without food or electrolytes, is a known trigger for dilutional hyponatremia. Moderation matters more than most people realize.
For most healthy adults eating a normal diet, low sodium is not a common problem. The body regulates sodium tightly. When levels do drop, there is usually a reason worth finding.
Frequently Asked Questions
What is the fastest way to raise sodium levels naturally?
Adding salt to food or drinking a sodium-containing electrolyte drink raises sodium intake quickly. If the cause is fluid overload rather than sodium loss, the fix is different and needs medical guidance.
Can drinking too much water cause low sodium?
Yes. Drinking very large amounts of water, especially during endurance exercise, can dilute sodium in the blood. This is a recognized cause of hyponatremia.
Should I eat more salt if my blood test shows low sodium?
Not always. Low sodium can come from excess water rather than too little salt, so eating more salt may not help and can be harmful in some conditions. Ask your doctor why your level is low first.
Which foods are highest in sodium?
Table salt, canned soups, cured meats, cheese, pickles, olives, and salted nuts are among the highest food sources. Check labels, since sodium varies widely by brand.

