What happens when your sodium is low
Mia Horton
Updated on April 11, 2026
In acute hyponatremia, sodium levels drop rapidly — resulting in potentially dangerous effects, such as rapid brain swelling, which can result in a coma and death. Premenopausal women appear to be at the greatest risk of hyponatremia-related brain damage.
What happens when sodium levels drop too low?
In acute hyponatremia, sodium levels drop rapidly — resulting in potentially dangerous effects, such as rapid brain swelling, which can result in a coma and death. Premenopausal women appear to be at the greatest risk of hyponatremia-related brain damage.
How do you raise your sodium level?
- Intravenous fluids. Your doctor may recommend IV sodium solution to slowly raise the sodium levels in your blood. …
- Medications. You may take medications to manage the signs and symptoms of hyponatremia, such as headaches, nausea and seizures.
What causes sodium levels to be low?
A low sodium level has many causes, including consumption of too many fluids, kidney failure, heart failure, cirrhosis, and use of diuretics. Symptoms result from brain dysfunction.Can a person recover from low sodium levels?
Hyponatremia can result from multiple diseases that often are affecting the lungs, liver or brain, heart problems like congestive heart failure, or medications. Most people recover fully with their doctor’s help.
How long does it take to recover from low sodium?
Generally, low sodium is asymptomatic (does not produce symptoms), when it is mild or related to your diet. It can take weeks or months for you to experience the effects of low salt in your diet—and these effects can be corrected by just one day of normal salt intake.
How do you fix low sodium?
- cutting back on fluid intake.
- adjusting the dosage of diuretics.
- taking medications for symptoms such as headaches, nausea, and seizures.
- treating underlying conditions.
- infusing an intravenous (IV) sodium solution.
What is the best source of sodium?
- Sandwiches.
- Cold cuts and cured meats.
- Soups.
- Burritos and tacos.
- Savory snacks*
- Chicken.
- Cheese.
- Eggs and Omelets.
Will eating more salt help hyponatremia?
In elderly patients with a diet poor in protein and sodium, hyponatremia may be worsened by their low solute intake. The kidney’s need to excrete solutes aids in water excretion. An increase in dietary protein and salt can help improve water excretion.
Which fruit has high sodium?Products made from these fruits like applesauce, apple juice, dried apples, jams made from apples and guavas are also sodium-rich. Avocados, papaya, mangoes, carambola, pineapple, bananas, watermelons and pears also contain sodium but in low quantities. Celery and beet are two vegetables with high sodium content.
Article first time published onHow quickly can you replace sodium?
Clinical recommendationEvidence ratingCommentsIn patients with severe symptomatic hyponatremia, the rate of sodium correction should be 6 to 12 mEq per L in the first 24 hours and 18 mEq per L or less in 48 hours.CConsensus guidelines based on systematic reviews
Can low sodium cause stroke like symptoms?
Symptoms of hyponatremia can be indistinguishable from ischemic stroke and include changes in consciousness, seizure, or coma. Other neurological symptoms that are commonly associated with strokes, such as weakness, numbness, or uncoordinated movements, can also be seen with hyponatremia.
Can low sodium cause high blood pressure?
It also helps maintain both intercellular and intracellular fluid balances. Too much sodium (> 145 mEq/L) can adversely affect these fluid balances and thus contribute to high blood pressure. But, too little sodium (< 135 mEq/L) can have detrimental effects as well.
What foods should you eat if you have low-sodium?
Low-Sodium Foods to Enjoy Fresh and frozen vegetables (without sauces): Greens, broccoli, cauliflower, peppers, etc. Fresh, frozen or dried fruits: Berries, apples, bananas, pears, etc. Grains and beans: Dried beans, brown rice, farro, quinoa and whole wheat pasta.
Will Gatorade help raise sodium levels?
In athletes with hyponatremia, low serum sodium levels have been corrected with the administration of an isotonic beverage. Therefore, giving Gatorade® to patients with hyponatremia may be an alternative treatment method to increase serum sodium levels.
Are Bananas high in sodium?
Bananas, like most fruits and vegetables, are high in potassium and low in sodium. We humans get much of our dietary sodium from sodium chloride, otherwise known as salt.
What organ is responsible for maintaining sodium levels?
Most of the sodium in the body (about 85%) is found in blood and lymph fluid. Sodium levels in the body are partly controlled by a hormone called aldosterone, which is made by the adrenal glands. Aldosterone levels tell the kidneys when to hold sodium in the body instead of passing it in the urine.
What foods increase sodium?
Convenience foods — including boxed potatoes, canned soup, instant pudding, meal helpers, pizza, and frozen meals — also tend to run high in sodium, as do salty snacks such as pork rinds and pretzels.
How does low sodium affect the brain?
When sodium levels in the blood are too low, extra water goes into body cells causing them to swell. This swelling can be especially dangerous for brain cells, resulting in neurological symptoms such as headache, confusion, irritability, seizures or even coma.
Can low sodium cause breathing problems?
Tiredness. Shortness of breath. Headaches. Swelling or fluid buildup in certain parts of your body.
Can low sodium cause stomach pain?
You may experience low sodium symptoms daily or just once in a while. At times any of these low sodium symptoms can be severe: Abdominal pain or cramping. Bloating.
Does sodium levels affect your kidneys?
A high salt diet will alter this sodium balance, causing the kidneys to have reduced function and remove less water resulting in higher blood pressure. This puts strain on the kidneys and can lead to kidney disease.
Can sodium give you a headache?
Salty foods — especially salty processed foods that may contain harmful preservatives — may trigger migraine in some people. Consuming high levels of sodium can increase blood pressure, causing headaches or migraine attacks.
Why is sodium low in heart failure?
Why do I need to limit my sodium? Limiting sodium in your diet helps minimize the amount of extra fluid around your heart, lungs, and in your legs. Extra fluid in your body makes your heart work harder and can increase your blood pressure.
Does coffee affect sodium levels?
Chronic caffeine intake increases urinary sodium excretion without affecting plasma sodium concentration.
How does sodium affect the heart?
Too much salt can cause fluid to build up around the heart and lungs, making the heart work harder. Evidence suggests that a limit of 2,000 mg per day of sodium is a good goal for people with heart failure, especially if they also have high blood pressure.