A digestive supplement has the potential to improve the health of your liver.

What if the most common liver condition today isn't caused by alcohol or drugs, but by your gut? Impacting almost a third of the global population and often existing without symptoms, this silent epidemic may already be harming your liver unknowingly. Researchers have identified an unexpected culprit—and an even more unexpected solution. The remedy may not be found in a pharmacy, but in your kitchen.

Overview

• NAFLD is Widespread and Risky – Nonalcoholic fatty liver disease affects 80–100 million U.S. adults and raises the chances of diabetes, heart disease, and kidney issues.

• Resistant Starch Offers Hope – A four-month clinical study demonstrated that resistant starch notably decreased liver fat and enhanced other metabolic markers in NAFLD patients.

• Gut Microbiota's Vital Role – The gut-liver axis indicates that specific gut bacteria either promote or alleviate NAFLD progression, and prebiotics like resistant starch can positively influence this balance.

This Common Supplement Might Stealthily Protect Your Liver

A "silent" disease labeled as an epidemic by the World Health Organization affects 30% of the global population.

Since no medication can address it, scientists are compelled to seek solutions elsewhere. In doing so, they have discovered a promising intervention. This condition is known as nonalcoholic fatty liver disease (NAFLD). A diet rich in a common digestive supplement might hold the key to its solution.

NAFLD is estimated to impact 80 to 100 million American adults. It typically manifests without symptoms, making it particularly dangerous. Untreated, it can not only progress to a more severe liver disease but also contribute to type 2 diabetes, heart disease, chronic kidney disease, and heightened mortality.

Similar to the gut-brain axis, a gut-liver axis exists, with intestinal microbes known to play a role in NAFLD. By targeting the gut with synbiotics (prebiotics and probiotics), the gut microbiota can be influenced to yield a healthier outcome.

Probiotics for Your Liver

For instance, recent studies demonstrated that probiotic yogurt, yogurt combined with the prebiotic inulin, and oligofructose, a prebiotic, reduced liver enzymes to healthier levels, lowered liver fats, and mitigated insulin resistance in NAFLD and the more advanced form, nonalcoholic steatohepatitis (NASH).

These initial inquiries were expanded by an international group of scientists overseen by Friedrich Schiller University, Jena, in Germany. They were intrigued by investigating the effects of resistant starch. This prebiotic is present in foods like whole grains, oats, seeds, peas, beans, lentils, and green bananas.

To undertake this, the researchers conducted a randomized, double-blind, placebo-controlled clinical trial involving 196 Chinese men and women with an average age of 39, all diagnosed with NAFLD.

Half of them consumed a prebiotic in the form of 40 grams of resistant starch daily, while the remaining half ingested a control starch with an equal calorie count for comparison. Throughout the trial, all participants received dietary guidance to induce weight loss. They also underwent comprehensive clinical assessments, including blood serum and fecal samples, as well as MRI scans to monitor changes in liver fat content.

After four months, and after adjusting the results to account for the impact of weight loss, those consuming resistant starch witnessed a significant 5.89% absolute decrease in liver fats (triglycerides) compared to the control group. Moreover, researchers observed notable positive changes in other parameters related to visceral fat, glucose metabolism, lipid metabolism, blood pressure, and liver enzymes.

NAFLD Linked to a Specific Bacterial Strain

Lead researcher Gianni Panagiotou explained, stating, "We discovered that the participants benefited from a resistant starch diet, as fat accumulation in the diseased liver was reduced. Additionally, we noticed an increase in certain gut bacteria in the participants; these bacteria had a favorable impact on fat reduction and transport in the liver. Furthermore, reduced NAFLD and inflammation  markers suggest a reduction in liver damage."

A certain bacterial strain that becomes more prevalent as liver fat accumulates and liver damage worsens is referred to as Bacteroides stercoris. This bacteria was diminished in individuals consuming resistant starch. The scientists' detailed analysis and additional research in mice lead them to believe that B. stercoris isn't just associated with NAFLD but actively promotes its advancement.

They concluded their research by suggesting that resistant starch "might be a novel, relatively simple, and cost-effective microbiota-targeted therapeutic option for NAFLD...and decrease the liver enzymes indicative of liver injury and markers for systemic inflammation."

Protecting Your Liver

Since NAFLD is prevalent in over 90% of severely obese individuals and up to 75% of overweight individuals, weight loss is a crucial strategy.

Specific habits like frequent snacking, sugary beverages, and foods with added sugars can worsen the condition, but  coffee is considered beneficial as endorsed by the British Liver Trust, which released a report titled Coffee And The Liver – The Potential Health Benefits.

Adequate hydration also supports liver health.

Exercise enhances the condition even without weight loss by improving insulin sensitivity, a risk factor for NAFLD. Exercise also reduces liver fat.

In a review of herbal medicine treatments, the researchers noted, "Increasing evidence has demonstrated the efficacy of polyphenols, including resveratrol, quercetin, silymarin, silybin, and rutin, in NAFLD." All these compounds are available as supplements.

Summary

Nonalcoholic fatty liver disease (NAFLD) affects around 30% of the global population and is often asymptomatic, potentially leading to severe health issues if untreated. A recent study by an international research team has revealed that resistant starch, a prebiotic fiber found in foods like oats, lentils, and green bananas, significantly reduces liver fat and enhances metabolic health in NAFLD patients. The study highlighted a strong connection between gut microbiota and liver function, particularly targeting a harmful bacterial strain. The findings suggest that modulating the gut-liver axis through dietary interventions and supplements such as probiotics and polyphenols may offer a safe, cost-effective treatment approach for NAFLD.

Frequently Asked Questions

What is NAFLD, and why is it harmful?

NAFLD, or nonalcoholic fatty liver disease, is a condition characterized by liver fat accumulation without alcohol consumption. It can lead to liver damage, diabetes, and heart disease.

What is resistant starch, and how does it aid?

Resistant starch is a prebiotic fiber present in whole grains, legumes, and green bananas. It nourishes beneficial gut bacteria, which in turn reduce liver fat and inflammation.

Can dietary changes alone reverse NAFLD?

Diet and physical activity are essential. Reducing sugar intake, increasing fiber consumption, staying hydrated, and using supplements like probiotics or polyphenols can help manage or reverse NAFLD.

What role do gut bacteria play in liver health?

The gut-liver axis connects the microbiome to liver function. Certain bacteria, like Bacteroides stercoris, may exacerbate NAFLD, while others support healing.

Is there a cure for NAFLD?

While there isn't a pharmaceutical cure yet, lifestyle modifications, resistant starch, probiotics, and natural supplements exhibit strong potential in treating the disease.