Is Salt Bad for Fatty Liver? Sodium, MASLD and Cirrhosis

TL;DR

• Too much salt is bad for fatty liver, mainly through blood pressure and heart health. Large observational studies also link salty eating to a higher risk of fatty liver, though they can’t prove cause.
• Without cirrhosis, aim for the general limit: less than 2,300 mg of sodium a day. Over 70% of the sodium Americans eat comes from packaged and prepared foods, not the salt shaker.
• Cirrhosis with fluid buildup (ascites) is different: guidelines suggest about 2,000 mg a day, set with your care team. Check with your doctor before using a potassium-based salt substitute.

Yes, too much salt is bad for fatty liver, though not in the direct way sugar or alcohol are. The clearest harm runs through blood pressure and the heart, and heart disease is one of the leading causes of death in people with MASLD (formerly NAFLD). Studies also link salty eating to a higher risk of fatty liver itself.

For most people with fatty liver, the target is the one recommended for all adults: less than 2,300 mg of sodium a day. Cirrhosis with fluid buildup is the exception, and it has its own section below because the advice is different.

Does Salt Cause Fatty Liver?

That hasn’t been proven, but large studies point the same way:

• UK Biobank (2025): In 492,265 adults without liver disease followed for a median of 13 years, those who added salt to their food more often were more likely to develop MASLD. Compared with people who never or rarely added salt, the risk was 8% higher for “sometimes,” 22% higher for “usually” and 40% higher for “always.” The link was partly explained by body fat, and similar links appeared for cirrhosis and liver cancer.
• PREVEND (2019): In 6,132 Dutch adults who collected two full days of urine, people with likely fatty liver (based on a fatty liver index) excreted more sodium, about 164 versus 137 mmol a day, or roughly 3,760 versus 3,150 mg. The link weakened once the researchers accounted for insulin resistance.

Both are observational. People who salt their food heavily may also eat more processed food and calories, and body fat and insulin resistance may explain part of the link. So cutting back on salt is sensible, but it isn’t a fatty liver treatment on its own, and there’s no special sodium target for fatty liver without cirrhosis.

Why Does Salt Matter So Much With Fatty Liver?

Mostly because of your heart. According to the AASLD’s 2023 practice guidance, the most common causes of death in people with fatty liver are cardiovascular disease and non-liver cancers, followed by liver disease.

High blood pressure is part of that picture. The AASLD notes that hypertension is common in fatty liver, becomes more common as the disease advances, and has been associated with fibrosis progression. It recommends aggressively treating high blood pressure, along with cholesterol and blood sugar problems, to lower heart risk.

Sodium is one of the levers. The FDA explains that sodium draws water into the bloodstream, which can increase blood volume and blood pressure, and that diets higher in sodium are associated with a higher risk of high blood pressure, “a major cause of stroke and heart disease.” Cutting sodium works alongside weight loss and exercise, which we cover in how to reverse fatty liver.

How Much Sodium Should You Have a Day?

• The limit: the 2025–2030 Dietary Guidelines say people 14 and older should consume less than 2,300 mg of sodium a day. That’s also the FDA’s Daily Value on food labels.
• What that looks like: a teaspoon of table salt has about 2,325 mg of sodium (USDA), so the whole day’s limit is roughly one teaspoon, counting the salt already in your food.
• Where most people are: Americans eat about 3,400 mg a day on average, according to the FDA.
• Your own target may be lower. If you have high blood pressure, heart failure or kidney disease, your doctor may set a stricter number.

When reading labels, the FDA’s rule of thumb is that 5% of the Daily Value or less per serving is low and 20% or more (460 mg) is high. “Low sodium” means 140 mg or less per serving. “Reduced sodium” just means at least 25% less than the regular product, which can still be a lot, and “no salt added” doesn’t mean sodium-free.

Where Does Most of Your Sodium Come From?

Not the shaker. The FDA says over 70% of the sodium Americans eat comes from packaged and prepared foods. Citing CDC data, it lists the foods that supply about 40% of it: deli meat sandwiches, pizza, burritos and tacos, soups, savory snacks, poultry, pasta dishes, burgers, and egg dishes and omelets.

Some salty foods don’t taste salty: a slice of white bread has about 142 mg of sodium (USDA). Here are common high-sodium foods and easy swaps:

Higher-sodium choice	Sodium	Lower-sodium swap	Sodium
Canned chicken noodle soup, 1 cup prepared	831 mg	Low-sodium canned version, 1 cup	429 mg
Soy sauce, 1 tbsp	879 mg	Low-sodium soy sauce, 1 tbsp	511 mg
Deli turkey breast, 2 oz (56 g)	503 mg	Home-roasted chicken breast, 2 oz	41 mg
Salted hard pretzels, 1 oz	352 mg	Air-popped popcorn, unsalted, 3 cups	1 mg
Bottled Italian dressing, 2 tbsp	292 mg	1 tbsp olive oil + 1 tbsp red wine vinegar	under 2 mg
Dill pickle, 1 small spear (35 g)	283 mg	Reduced-sodium dill pickle spear	6 mg

Source: USDA FoodData Central (SR Legacy).

Notice that the low-sodium soup and soy sauce still carry about 19% and 22% of the Daily Value, so read the label. Processed cheese and salty snacks are other big sources; see is cheese bad for fatty liver and are chips bad for fatty liver.

What If You Have Cirrhosis or Ascites?

This section is for people with cirrhosis only. Sodium advice for cirrhosis is a treatment decision made with your care team, and it shouldn’t be blended with general fatty liver advice.

• With ascites (fluid in the belly), sodium makes the body hold more water. AASLD guidance recommends a dietary sodium limit of about 2 g (90 mmol) a day, together with diuretics.
• Not too low, either. The European nutrition guideline for chronic liver disease suggests about 80 mmol a day (roughly 1,800 mg of sodium) and says intake should not go below 60 mmol a day, because very bland food can cut how much energy and protein people eat.
• Eating enough comes first. Malnutrition and muscle loss are common in cirrhosis, so protein and calorie targets matter as much as the sodium number. A dietitian can help you meet both.
• Fluid limits are usually not needed unless your blood sodium is very low, according to AASLD guidance.
• Watch potassium. Spironolactone, a diuretic often used for ascites, can raise blood potassium, which is one reason potassium-based salt substitutes need your doctor’s OK.

If you have cirrhosis without ascites, ask your team whether you need a strict limit at all. Our cirrhosis diet guide covers protein, late-evening snacks and the rest of the plan.

Are Salt Substitutes or Sea Salt Better?

• Sea salt, kosher salt and pink salt are mostly sodium chloride, with about the same sodium by weight as table salt. Switching types isn’t a meaningful way to cut sodium; using less is.
• Salt substitutes often swap sodium chloride for potassium chloride. Extra potassium can build up in people with kidney disease or who take medicines that raise potassium, such as spironolactone, ACE inhibitors or ARBs, so ask your doctor before using one. Salt-free herb and spice blends are the safer default.

How to Cut Back on Salt

• Cook from basic ingredients more often. The FDA suggests limiting packaged sauces, mixes and “instant” products such as flavored rice and instant noodles.
• Choose fresh meat, poultry and fish over deli meats, sausages and other processed meats.
• Buy no-salt-added canned goods and plain frozen vegetables.
• Taste before you salt, and measure when you do. A quarter teaspoon of table salt is about 580 mg of sodium. Lean on herbs, spices, garlic, citrus, vinegar and pepper instead.
• Snack on unsalted nuts, fruit or air-popped popcorn; see is popcorn good for fatty liver.
• Eat out with a plan: ask for sauces on the side and share salty dishes.
• Give your taste buds time. The FDA notes that your taste for sodium gradually decreases as you cut back.

Because so much sodium is hidden in packaged food, it helps to see your real totals. An app like Liverly can track sodium across your meals so the biggest sources stand out.

The Bottom Line

Too much salt is bad for fatty liver, mainly because it raises blood pressure and heart risk, and heart disease is one of the leading causes of death in people with MASLD. Large observational studies also link salty eating to a higher risk of fatty liver, though they can’t prove salt is the cause.

Without cirrhosis, aim for less than 2,300 mg of sodium a day, mostly by cutting back on packaged, processed and restaurant food. With cirrhosis and ascites, sodium becomes part of treatment, usually about 2,000 mg a day, and your hepatologist should set the target. For the full eating plan, see the fatty liver diet guide.

Sources

• Zhang S, et al. Adding salt to foods and risk of metabolic dysfunction-associated steatotic liver disease and other chronic liver diseases. Eur J Nutr. 2025.
• van den Berg EH, et al. Higher sodium intake assessed by 24 hour urinary sodium excretion is associated with non-alcoholic fatty liver disease: the PREVEND cohort study. J Clin Med. 2019.
• Rinella ME, et al. AASLD Practice Guidance on the clinical assessment and management of nonalcoholic fatty liver disease. Hepatology. 2023.
• FDA: Sodium in Your Diet
• Biggins SW, et al. Diagnosis, Evaluation, and Management of Ascites, Spontaneous Bacterial Peritonitis and Hepatorenal Syndrome: 2021 Practice Guidance by the AASLD. Hepatology. 2021.

This article is for informational purposes only and is not medical advice. Talk to your doctor or hepatologist about your specific situation.