According to Gram Research analysis, most children with celiac disease grow to normal height after following a gluten-free diet, but about 8.5% remain shorter than expected. A 2026 cross-sectional study of 141 children found that only 2.1% had growth hormone deficiency, suggesting that persistent short stature in treated celiac disease involves multiple factors beyond just hormone levels. Children who don’t catch up in height after 2 years on a gluten-free diet should be evaluated by a doctor.
A new study looked at 141 children and teenagers with celiac disease who had been eating gluten-free for at least two years. Researchers wanted to understand why some kids remained shorter than expected despite following their diet carefully. They found that about 8.5% of the children still had growth problems, and a small number had growth hormone deficiency. Interestingly, a protein called FGF21 didn’t seem to explain the height issues. The findings suggest that when celiac kids stay short, it’s usually due to multiple factors working together, not just one cause.
Key Statistics
A 2026 cross-sectional study of 141 children with celiac disease found that 8.5% remained shorter than expected despite following a gluten-free diet for at least 2 years.
Among children with celiac disease who stayed short despite a gluten-free diet, only 2.1% had growth hormone deficiency, suggesting other factors contribute to growth problems.
In a study of 141 children with treated celiac disease, those with persistent short stature had significantly lower levels of IGF-1 and IGFBP-3 growth proteins compared to children with normal height.
A 2026 study of 141 children with celiac disease found that FGF21 protein levels did not differ between short and normal-height children, ruling it out as a major cause of growth problems.
The Quick Take
- What they studied: Whether children with celiac disease who follow a gluten-free diet catch up to normal height, and what causes some to remain short
- Who participated: 141 children and teenagers (79 girls and 62 boys) with celiac disease who had been eating gluten-free for at least 2 years
- Key finding: About 8.5% of the kids remained shorter than expected even after years on a gluten-free diet, and only 2.1% had a growth hormone deficiency that could explain it
- What it means for you: If your child has celiac disease and isn’t growing as expected despite following a gluten-free diet, doctors should check their growth hormones and other factors. Most kids do catch up in height, but some need extra monitoring and testing.
The Research Details
Researchers conducted a cross-sectional study, which means they looked at a group of people at one point in time rather than following them over years. They studied 141 children and teenagers with celiac disease, all of whom had been following a gluten-free diet for at least 2 years. The team collected information from medical records about each child’s height, weight, and other body measurements. They also took blood samples from fasting patients (meaning they hadn’t eaten) to measure three important growth-related proteins: IGF-1, IGFBP-3, and FGF21. For children who were significantly shorter than expected, doctors performed special tests using medications to see if their bodies could produce enough growth hormone.
This research approach is important because it helps doctors understand what happens to children’s growth after they start eating gluten-free. By measuring specific growth hormones and proteins in the blood, researchers can figure out which kids might need extra help and what’s actually causing their height problems. This information helps doctors know when to do more testing and when to refer kids to specialists.
The study included a reasonable number of participants (141 children) and used objective measurements like blood tests and height measurements, which are reliable. However, because it’s a cross-sectional study, it only shows a snapshot in time rather than tracking children over many years. The researchers also didn’t compare these children to a control group of kids without celiac disease, so we can’t be completely sure how much of the growth problem is specific to celiac disease versus other factors.
What the Results Show
The main finding was that most children with celiac disease who follow a gluten-free diet do grow to normal height. However, 12 children out of 141 (about 8.5%) remained shorter than expected despite following their diet for at least 2 years. When doctors tested these shorter children, they found that only 3 of them (2.1% of all children in the study) had a growth hormone deficiency that could explain their short stature. This means that for most of the children who stayed short, the problem wasn’t simply a lack of growth hormone. Instead, the researchers found that children with persistent short stature had lower levels of two other important growth proteins called IGF-1 and IGFBP-3, even though they didn’t have a growth hormone deficiency. This suggests that the growth problem involves multiple parts of the body’s growth system, not just one broken part.
The study also measured a protein called FGF21, which some researchers thought might be involved in growth problems. Surprisingly, FGF21 levels didn’t differ between children who were short and those who had normal height. Additionally, FGF21 levels didn’t correlate with height or with the other growth proteins measured. This finding was important because it ruled out FGF21 as a major explanation for why some celiac kids stay short.
Previous research has shown that many children with celiac disease catch up to normal height once they start eating gluten-free, because the gluten-free diet allows their intestines to heal and absorb nutrients better. This study confirms that pattern in most children but highlights that a small group doesn’t follow this typical path. The finding that growth hormone deficiency is rare (2.1%) in treated celiac disease is consistent with other research showing that most growth problems in celiac disease are caused by poor nutrient absorption rather than hormone problems.
This study has several important limitations. First, it only looked at children at one point in time, so we don’t know if these short children eventually caught up or stayed short. Second, the study didn’t include a comparison group of children without celiac disease, so we can’t be sure how much of the growth problem is specific to celiac disease. Third, the researchers didn’t measure how strictly each child was following the gluten-free diet, so some children might have been accidentally eating gluten. Finally, the study didn’t look at other factors that affect growth, like nutrition levels, family history of height, or other medical conditions.
The Bottom Line
Parents of children with celiac disease should ensure their child is strictly following a gluten-free diet, as this is the most important step for normal growth. Children should have their height monitored regularly by their doctor. If a child isn’t growing as expected after 2 years on a gluten-free diet, doctors should perform blood tests to check growth hormone levels and other growth-related proteins. In rare cases (about 2%), growth hormone treatment might be needed. Most children will catch up in height, but some need extra attention and testing. Confidence level: Moderate, based on this single study of 141 children.
Parents and doctors caring for children with celiac disease should pay attention to this research, especially if a child isn’t growing as expected. Children who have been on a gluten-free diet for 2 years but remain short should be evaluated by a pediatric endocrinologist (a doctor who specializes in growth and hormones). This research is less relevant for children who are growing normally on a gluten-free diet or for adults with celiac disease.
Most children with celiac disease start growing better within months of starting a gluten-free diet as their intestines heal. However, if a child hasn’t caught up to normal height after 2 years on a strict gluten-free diet, they may need additional testing and treatment. Growth improvements from treatment can take several months to become noticeable.
Frequently Asked Questions
Will my child with celiac disease catch up in height after going gluten-free?
Most children do catch up to normal height once they follow a gluten-free diet strictly, as their intestines heal and absorb nutrients better. However, about 8.5% may remain shorter and need additional evaluation by a doctor to identify other causes.
How long does it take for celiac kids to grow normally after starting a gluten-free diet?
Many children show improved growth within months of starting a gluten-free diet. However, if a child hasn’t caught up after 2 years on a strict gluten-free diet, they should see a doctor for testing to check growth hormones and other factors.
What causes short stature in children with celiac disease who follow a gluten-free diet?
Research shows that persistent short stature in treated celiac disease is usually multifactorial, meaning multiple factors contribute. Growth hormone deficiency is rare (2.1%), but problems with other growth proteins like IGF-1 and IGFBP-3 are more common.
Should my child with celiac disease get tested for growth hormone deficiency?
If your child has been on a strict gluten-free diet for 2 years but remains significantly shorter than expected for their age, your doctor should perform blood tests and possibly growth hormone stimulation tests to identify the cause.
Can FGF21 protein levels explain why some celiac kids stay short?
No. A 2026 study found that FGF21 levels did not differ between children with celiac disease who were short and those with normal height, ruling it out as a major factor in growth problems.
Want to Apply This Research?
- Track your child’s height every 3 months using a consistent method (same time of day, same measuring tool). Record the measurement and compare it to growth charts for their age. Note any changes in growth rate, not just absolute height.
- Use the app to log gluten-free diet adherence daily, marking meals and snacks as gluten-free or questionable. Set reminders for scheduled doctor visits and growth monitoring appointments. Create alerts for when it’s time for the next height measurement.
- Set up a long-term growth tracking dashboard showing height over time with age-appropriate growth curves. Flag any months where growth slows significantly. Schedule quarterly reviews with your healthcare provider and use the app to share growth data with your doctor before appointments.
This research summary is for educational purposes only and should not replace professional medical advice. If your child has celiac disease and you’re concerned about their growth, consult with your pediatrician or a pediatric endocrinologist. Growth hormone testing and treatment should only be performed under medical supervision. Individual results may vary based on diet adherence, genetics, and other health factors.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.