A mother's diet could be the key to her child's liver health? That's the intriguing premise behind groundbreaking research from the University of Oklahoma. This study suggests a simple intervention during pregnancy and breastfeeding could dramatically reduce the risk of fatty liver disease in offspring. But here's where it gets interesting: the secret lies within the maternal microbiome.
Researchers discovered that when pregnant and lactating mice were given a specific compound, the offspring showed significantly lower rates of fatty liver disease later in life. This compound, called indole, is naturally produced by healthy gut bacteria when they break down tryptophan, an amino acid abundant in foods like turkey and nuts.
This research shines a light on metabolic dysfunction-associated steatotic liver disease (MASLD), a growing concern for both adults and children. While it affects both, MASLD tends to progress faster in children and is strongly linked to diabetes.
"The prevalence of MASLD in children is about 30% in those with obesity and about 10% in children without obesity," explains Dr. Jed Friedman, director of the OU Health Harold Hamm Diabetes Center. He further emphasizes the increased risk if the mother is obese or consumes a poor diet. The disease often goes unnoticed in children until liver-related symptoms appear, making early prevention even more critical.
The research team, including Dr. Karen Jonscher, hypothesized that the gut microbiome plays a crucial role in developing fatty liver disease. To test this, they fed female mice a high-fat, high-sugar diet during pregnancy and lactation. Some of these mice also received indole. After weaning, the offspring were monitored.
The results were promising. Offspring whose mothers received indole showed healthier livers, less weight gain, lower blood sugar levels, and smaller fat cells, even after being exposed to a Western-style diet later in life. They also observed the activation of a protective gut pathway involving the acyl hydrocarbon receptor (AHR).
And this is the part most people miss: Researchers found that transferring gut bacteria from the protected offspring to other mice (that hadn't received indole) also reduced liver damage. This provides compelling evidence that the microbiome itself is key to protection.
While these findings are from animal studies, they open doors to new strategies for preventing MASLD through early intervention. Currently, there are no approved drugs for treating pediatric MASLD, aside from weight loss, once the disease takes hold. "Anything we can do to improve the mother’s microbiome may help prevent the development of MASLD in the offspring," Dr. Jonscher states.
Could this research revolutionize how we approach liver health? What are your thoughts on the potential of maternal diet and the microbiome to impact a child's health? Share your opinions in the comments below!
About the Project:
The article, “Reprogramming offspring liver health: maternal indole supplementation as a preventive strategy against MASLD,” is available at doi:10.1016/j.ebiom.2025.106098.
About the University of Oklahoma:
Founded in 1890, the University of Oklahoma is a public research university with campuses in Norman, Oklahoma City, and Tulsa. It serves the educational, cultural, economic, and health care needs of the state, region, and nation. The OU Health Campus in Oklahoma City is one of the few academic health centers with seven health profession colleges on the same campus. It serves approximately 4,000 students in over 70 undergraduate and graduate degree programs and is the leading research institution in Oklahoma. For more information, visit ouhsc.edu.
