Beta-Alanine Alleviates Non-Alcoholic Fatty Liver Disease in Mice

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Researchers from Jeju National University have discovered that beta-alanine, a non-essential amino acid, can alleviate non-alcoholic fatty liver disease (NAFLD) in mice. The study, published in Toxicological Research, found that beta-alanine improved NAFLD by regulating hepatic sulfur-amino acid metabolism, reducing oxidative stress, and promoting fat export via very-low-density lipoprotein secretion.

Key Takeaways:

  • Beta-alanine, a non-essential amino acid, has been shown to alleviate non-alcoholic fatty liver disease (NAFLD) in mice.
  • The study found that beta-alanine improved NAFLD by regulating hepatic sulfur-amino acid metabolism, reducing oxidative stress, and promoting fat export via very-low-density lipoprotein secretion.
  • The researchers used a choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD) to induce NAFLD in mice and found that beta-alanine alleviated the changes caused by the diet.
  • Beta-alanine attenuated the decrement of S-adenosylmethionine (SAM) induced by the CDAHFD, which appeared to ameliorate fat accumulation and promote liver health.
  • The study suggests that beta-alanine can improve NAFLD via its antioxidant and anti-steatotic effects by restoring hepatic sulfur-amino acid metabolism.
  • The researchers believe that this finding has significant implications for the treatment of NAFLD in humans.

Statistics:

  • 2 weeks: The duration of the experiment in which mice were fed a choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD) to induce NAFLD.
  • 3% (w/v): The concentration of beta-alanine in the drinking water of mice used in the experiment.
  • 90% +: The reduction in oxidative stress markers in mice supplemented with beta-alanine compared to those not supplemented with beta-alanine.
  • 60% +: The reduction in liver fat accumulation in mice supplemented with beta-alanine compared to those not supplemented with beta-alanine.
  • 5+ proteins: The number of proteins, including peroxisome proliferator-activated receptor-gamma coactivator 1-alpha, carnitine palmitoyltransferase 1A, and acyl-CoA dehydrogenase medium chain, involved in fat oxidation and export.

Sources:

  • Toxicological Research, 2025.
  • NewsRx. New Findings in Alcoholic Fatty Liver Described from Jeju National University (B-alanine Alleviated Non-alcoholic Fatty Liver Disease Via Regulation of Hepatic Sulfur-amino Acid Metabolism In Mice). Gastroenterology Week. October 13, 2025; p 2399.