New research published in The Journal of Pediatrics has identified specific perinatal and lifestyle factors associated with elevated alanine aminotransferase (ALT) levels in children—a potential early warning sign for metabolic-associated steatotic liver disease (MASLD), previously known as non-alcoholic fatty liver disease.
The population-based study, led by researchers at Tampere University and the University of Eastern Finland, examined how factors present from before birth through childhood might influence liver health markers. For celiac families, this research adds another dimension to the complex picture of pediatric liver health—particularly relevant since celiac disease itself can cause elevated liver enzymes and liver complications when untreated.
Why This Matters for Celiac Families
Parents raising children with celiac disease already navigate a landscape of elevated liver enzymes. Transaminase levels—including ALT—are elevated in approximately 40-50% of children at celiac diagnosis and typically normalize on a strict gluten-free diet. But the relationship between celiac disease and liver health doesn’t end there.
This new research identifying early-life predictors of liver enzyme elevation matters because it helps distinguish between different causes of elevated ALT. When a celiac child shows elevated liver markers, clinicians need to determine whether it’s from gluten exposure, an unrelated metabolic condition, or both. Understanding the broader landscape of what drives ALT elevation in childhood populations provides important context.
Children with celiac disease can also develop MASLD, and the overlap between these conditions is increasingly recognized. Both involve metabolic dysfunction, both can silently damage the liver, and both require early identification to prevent progression.
What the Research Found
The Finnish study tracked children from before birth through school age, examining perinatal factors (maternal health during pregnancy, birth weight, gestational age) and childhood lifestyle factors (diet, physical activity, body composition) that might predict ALT levels.
While the full results are still emerging as the paper was just published, the research framework itself is significant. By examining ALT as an early indicator rather than waiting for advanced liver disease to develop, researchers are working to identify intervention windows—periods when lifestyle changes could prevent metabolic liver disease from taking root.
This preventive approach mirrors what celiac families already know: catching problems early matters. The gluten-free diet works best when started before significant intestinal damage occurs. The same principle applies to metabolic liver health—identifying risk factors in childhood creates opportunities to intervene before irreversible damage develops.
The Celiac-Liver Connection
For those of us raising children with celiac disease, liver health is already on the radar. Elevated ALT at diagnosis is common enough that pediatric gastroenterologists routinely check liver function as part of the celiac workup. Most of the time, these elevations resolve within 6-12 months on a gluten-free diet.
But some celiac children maintain elevated liver enzymes despite strict dietary adherence. In these cases, clinicians must investigate other causes—including MASLD, autoimmune liver conditions, or medication effects. Research like this Finnish study helps build the knowledge base for understanding what else might be driving those persistent elevations.
The connection runs deeper than just elevated enzymes. Untreated celiac disease can progress to serious liver complications, including autoimmune hepatitis, primary biliary cholangitis, and even cirrhosis in rare cases. The malabsorption characteristic of untreated celiac can also contribute to metabolic dysfunction that affects the liver.
Metabolic Health in the Gluten-Free Era
There’s an uncomfortable truth many celiac families discover: the gluten-free diet, while medically necessary and life-saving, doesn’t automatically equal metabolic health. Many commercial gluten-free products are heavily processed, high in refined starches, and low in fiber. Children who transition to a gluten-free diet sometimes gain excessive weight, particularly in the first year after diagnosis as their intestines heal and nutrient absorption normalizes.
This metabolic shift can potentially increase MASLD risk, making research into childhood liver enzyme patterns particularly relevant for the celiac community. Parents need to balance the medical necessity of strict gluten avoidance with the broader goal of metabolic health—emphasizing whole foods, vegetables, fruits, lean proteins, and naturally gluten-free whole grains like quinoa and rice over processed gluten-free alternatives.
Early Indicators and Intervention Windows
The concept of ALT as an early indicator is powerful because it’s measurable, relatively inexpensive, and already part of routine medical care for many children with chronic conditions. Unlike advanced imaging or liver biopsies, a simple blood test can flag potential problems years before symptoms appear.
For celiac families already accustomed to regular monitoring—repeat antibody testing, growth tracking, nutrient level checks—adding liver enzyme surveillance when indicated fits into an existing framework of proactive health management.
The Finnish researchers’ focus on modifiable factors is equally important. While we can’t change perinatal history, identifying lifestyle factors associated with elevated ALT creates actionable targets. Physical activity levels, dietary patterns, and body composition are all modifiable through family-based interventions.
What Parents Can Do
This research reinforces principles that celiac families already practice: vigilance, early detection, and proactive management. While we await full publication of the detailed findings, the study’s approach suggests several practical takeaways.
First, liver enzyme monitoring matters. If your celiac child had elevated ALT at diagnosis, follow-up testing confirms normalization on the gluten-free diet. If levels remain elevated despite strict adherence, further investigation is warranted.
Second, the gluten-free diet should emphasize whole foods and metabolic health, not just gluten avoidance. Fruits, vegetables, lean proteins, and naturally gluten-free whole grains support both intestinal healing and broader metabolic function.
Third, physical activity benefits extend beyond cardiovascular health to liver function and metabolic regulation. Children with celiac disease can and should participate fully in sports and active play—there’s no reason the diagnosis should limit physical activity.
Finally, regular medical follow-up creates opportunities to catch problems early. Annual celiac monitoring visits can include liver function assessment when indicated, particularly for children with persistent symptoms, poor growth, or other metabolic concerns.
Looking Forward
Research into early predictors of metabolic liver disease represents a shift from reactive treatment to proactive prevention. For celiac families, this aligns with the broader philosophy of the gluten-free diet itself—identifying a problem early and intervening before irreversible damage occurs.
The Finnish study adds to a growing body of evidence that childhood metabolic health deserves serious attention. Liver disease that begins in childhood can progress silently for decades, only becoming apparent when cirrhosis or liver failure develops in adulthood. Identifying at-risk children and implementing early interventions could prevent that trajectory.
For children with celiac disease, who already face one chronic condition affecting their digestive and metabolic health, understanding the full landscape of liver health risks and protective factors becomes even more critical. Research like this helps build that understanding, one study at a time.
References
deRuyter H, Aitokari L, Iqbal A, Eloranta AM, Viitasalo A, Soininen S, Haapala EA, Huhtala H, Jääskeläinen J, Heinonen S, Lakka T, Kurppa K. Perinatal and Lifestyle Factors Associated with Childhood Alanine Aminotransferase Levels as an Early Indicator of MASLD: A Population-Based Study. The Journal of Pediatrics. 2026 May 12:115146. doi: 10.1016/j.jpeds.2026.115146. Available at: https://pubmed.ncbi.nlm.nih.gov/42128085/