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Is Keto Good for Fatty Liver? How the Right Diet Can Help Reverse Liver Disease

By: by Amino Science
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The ketogenic diet was originally developed as a medicinal aid for children with epilepsy, and though it's widely used these days as a weight-loss strategy, it still has practical applications in health care settings. What about in regards to the liver: is keto good for fatty liver? Can it prevent or even reverse fatty liver disease? We have the scientifically backed answers below.

The Keto Diet

First formulated to help treat epilepsy in children without the use of medications, the ketogenic diet restricts carb and sugar intake to 5% of your calories per day, with 75% of calories consumed devoted to healthy fats and the other 20% reserved for protein. Maintaining these macronutrient ratios triggers a secondary metabolism known as ketosis, which uses the ketones derived from dietary and body fat as fuel, rather than using the easy energy of sugar (glucose) from carbs.

Maintaining a steady state of ketosis can lead to rapid yet safe weight loss, and even has the added benefit of boosting mental performance, as ketones can cross the blood-brain barrier and provide an alternative source of energy for the brain.

The Liver and the Impact of Fatty Liver Disease

Your liver is a large organ located within the right side of your ribcage. It's also one of the hardest-working and most resilient organs you have.

Responsible for (among other things) amino acid processing, fatty acid breakdown, and glucose and fructose digestion, the liver also stores important nutrients for quick dispatch throughout the body and detoxifies your blood of any chemicals, poisons, alcohols, or medicines you ingest. Fatty liver and fatty liver disease interrupt these vital functions.

When more than 5% of your liver cells are composed of triglycerides (fats), you have hepatic steatosis, otherwise known as fatty liver disease.

Fatty liver disease can be caused by heavy alcohol use, known as alcoholic fatty liver disease, or by other lifestyle factors such as poor diet and exercise, which instigate non-alcoholic fatty liver disease (NAFLD). If caught soon enough, each of these conditions can be improved by lifestyle changes, including diet. So, is the keto diet an appropriate way to help heal your liver?

Is Keto Good for Fatty Liver Treatment?

Non-alcoholic fatty liver disease progresses from hepatic steatosis to non-alcoholic steatohepatitis (NASH), sometimes without showing symptoms enough to make you seek medical advice and get a diagnostic liver biopsy. The danger is that by the time the damage to your liver function is palpable, you may be too close to cirrhosis or end-stage liver failure to recover. Though this organ can heal in ways our hearts and brains cannot, chronic inflammation exacerbated by oxidative stress can lead to permanent scarring and irreversible liver damage.

A fatty liver diet help, but shouldn't it be a low-fat diet instead of high-fat, low-carbohydrate diet such as the keto diet? Not necessarily.

While it's true that excess fat buildup in the liver is the exact cause of fatty liver disease, the keto diet actually stimulates a fat-burning state of ketosis that can help remedy the condition without the need for medication. The keto diet also helps prevent other metabolic disorders like type 2 diabetes and heart disease. Here's some proof from clinical trials.

1. Risk Factor Management

Some of the top causes of non-alcoholic fatty liver disease, outside of having a genetic predisposition or an underlying cause like gut dysbiosis (aka "leaky gut syndrome"), are perfectly matched by a keto diet. Those include:

  • High carb and sugar intake: The non-nutritive calories found in refined sugar and highly processed carbohydrate foods can lead to NAFLD. The severe carbohydrate restriction demanded by keto directly improves both of these risk factors.
  • Visceral fat: This is fat that has collected around your viscera, or your vital organs, including the liver. Excess fat stored deep in the body not only crowds in on the normal function of your organs, but it also causes low-grade inflammation and is the kind of fat that is hardest to lose via exercise and normal diet. The fat-burning effects of keto will seek it out, leaving no stone unturned to find the fat needed to fuel your body when sugar is unavailable.
  • Insulin resistance: Fatty liver disease is associated with insulin resistance, which is why the two conditions are present simultaneously in as many as 80% of type 2 diabetes patients. Because the ketogenic diet restricts sugar intake, it helps increase insulin sensitivity in at-risk populations.

2. High-Quality Calories

The type of food we eat is just as important as the amount of food we eat. When it comes to non-alcoholic fatty liver disease, foods full of corn syrup, refined sugar, or processed carbs negatively impact our blood sugar levels and contribute directly to weight gain and ultimately fatty liver deposits.

One recent study on the effects of short-term carbohydrate overfeeding on long-term weight loss and liver fat in overweight adults found that over 3 weeks the addition of juice, candy, and sweetened beverages on top of a normal diet caused a 27% increase in liver fat, even while body fat went up only 2%.

When we consume excess carbs, the liver converts them into triglycerides in a process called "de novo lipogenesis," which translates literally to "making new fat." All that fat created and stored can eventually lead to NAFLD and other metabolic complications. By switching to the low-carb, low-sugar keto diet, you avoid one of the core risk factors for fatty liver disease.

3. Dietary Fat

It may seem counterintuitive that consuming a high-fat diet would lead to less fat in the liver, but studies show that not only does restricting sugar intake help improve metabolic health, but increasing healthy fats and protein helps achieve better weight loss than restricting overall calories.

This 2011 study comparing a low-calorie diet with a low-carb, non-calorie restricted diet found that the low-carb group had a 55% liver fat reduction vs. a 26% reduction in the low-fat group after only 2 weeks.

It isn't the dietary fat itself that's the problem. It's how that fat is used and stored in the body. On a low-carb diet like keto, the body is trained to burn all the fat it can find for energy. That means less fat stored and more fat accessed from the places it's been previously stored, which includes a reduction of liver fat.

Another study found that 14 adults with metabolic syndrome eating a Mediterranean keto diet of fatty fish, olive oil, eggs, meat, and cheese experienced significant liver fat reduction, with 3 adults completely reversing NAFLD. All 14 no longer met the standards of metabolic syndrome after 12 weeks. For some, keto may truly be the cure for fatty liver disease, meaning the liver damage is stopped, reversed, and never progresses to life-threatening conditions like liver cancer.

Is Keto Good for Fatty Liver Treatment?

Keto Foods for Fatty Liver Disease

Along with focusing on a liver flush diet, you can start filling up your fridge and pantry with these keto-approved foods that are particularly beneficial to those with or worried about NAFLD.

      • Polyphenol foods: Polyphenols are phytochemicals, the antioxidants found in plants. Those plant foods particularly high in polyphenols include tomatoes, bell peppers, olives, wine (in moderation), dark berries, green veggies, cocoa, coffee, and spices like cinnamon and turmeric.
      • Green tea: Speaking of polyphenols, green tea is full of catechins, a type of polyphenol that helps contribute to overall longevity, as in literally the more green tea you consume, the less likely you are to die prematurely.
      • Fatty fish: Fatty fish like anchovies, herring, mackerel, sardines, and salmon are rich in omega-3 fatty acids, which have robust anti-inflammatory abilities and are often deficient in modern diets. We should have a nearly 1:1 ratio of omega-3s vs. omega-6s, but in the Western world we get so few omega-3s from fish, nuts, or seeds and so many omega-6s from refined vegetable oils, that ratio can be as skewed to 1:20 or 1:50.
      • Monounsaturated fatty foods: Foods like almonds, avocado, olives, olive oil, macadamia nuts, and peanuts contain monounsaturated fats that research shows have a protective effect on your liver health.
      • Whey protein: Derived from milk, whey protein helps increase levels of glutathione, an antioxidant that helps protect your liver cells from free radical damage. One study even shows that 20 grams of whey protein each day for NASH patients helped increase their glutathione levels and reduce their markers for oxidative stress and their liver fat levels.
      • Essential Amino Acids: Taking an essential amino acid supplement daily can help keep fat from accumulating in the liver and offer protection against disease. Supplementation with a targeted high-dose of essential amino acids can also offset the harmful effects of alcohol even when no other nutritional changes occur and alcohol consumption stays the same.

Food for Your Liver

Fatty liver disease comes with insulin resistance and other markers of metabolic syndrome, and can lead to cirrhosis, NASH, and possibly liver cancer and death. Though the ketogenic diet is a high-fat diet, it works to train the body to burn and utilize fat rather than store it dangerously in vital organs like your liver. A low-carb keto diet and an active lifestyle can help halt liver disease, reverse it, and restore your liver health before it's too late.

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