Two daily servings of nutrition supplements combined with diet counseling improved growth more than diet counseling alone in undernourished U.S. children. In this 2026 randomized trial of 279 children, the supplement group gained significantly more weight-for-age over 120 days, according to Gram Research analysis.
According to Gram Research analysis, a 120-day clinical trial found that undernourished children in the United States grew better when they received nutrition supplements along with diet counseling than when they received counseling alone. The study included 279 children between 3 and 9 years old whose growth was below typical ranges for their age. Children who drank two daily servings, totaling 480 calories, showed larger gains in weight, weight-for-height, and body mass index. Their weight-for-age scores also rose more over the study period. The results are encouraging, but many children in the supplement group did not finish the study according to the protocol, so the findings need confirmation in larger studies. Parents concerned about a child’s growth should talk with a pediatrician or registered dietitian before making changes.
Key Statistics
A 2026 randomized controlled trial of 279 children in the United States found that two daily servings of oral nutrition supplements plus diet counseling produced a 0.255 point greater improvement in weight-for-age score over 120 days than diet counseling alone.
In a 2026 trial of 279 undernourished U.S. children aged 3 to 9, the supplement group had higher average weight-for-age, weight-for-height, and body mass index for age scores than the counseling-only group at the measurement points reported.
In a 2026 trial of 279 undernourished U.S. children, only 89 of the 174 children assigned to nutrition supplements plus counseling completed the study according to protocol, which is about 51% of that group.
The Quick Take
- What they studied: Whether adding nutrition supplement drinks to diet coaching helps undernourished children grow better than diet coaching alone.
- Who participated: 279 children in the United States, ages 3 to 9, who were underweight or too thin for their age based on arm measurement or body mass index. 174 children were assigned to supplements plus coaching, and 105 were assigned to coaching only.
- Key finding: Children who received supplements plus coaching gained more weight-for-age score than those who received coaching alone after 120 days. The difference was 0.255 points on a standard growth scale, and the result was statistically significant, meaning it is unlikely to be due to chance.
- What it means for you: If your child has been falling behind on growth, nutrition supplements may be a useful addition to diet guidance. This study does not prove that supplements are right for every child, so talk with a doctor before starting them.
The Research Details
Researchers randomly assigned children to one of two groups. One group received two sessions of diet counseling and drank two daily servings of an oral nutrition supplement, which is a drink designed to add calories and nutrients. The other group received only the two diet counseling sessions. Random assignment means chance decided which group each child joined, which helps make the two groups similar at the start.
To be included, children had to have a mid-upper arm measurement or a body mass index for their age that placed them more than 1 but less than 3 standard deviations below average. Standard deviations are a way of measuring how far a child is from the typical range for their age. Children were between 36 and 107 months old, which is about 3 to 9 years.
Researchers measured each child’s height, weight, and arm size at the start and again on days 30, 60, and 120. Parents or caregivers also completed a 24-hour food recall, in which they described everything the child ate and drank the previous day, along with questionnaires at each visit. These repeated measurements allowed the team to track changes over time.
Random assignment is the strongest way to test whether one approach causes a change, because it reduces the chance that other differences between the groups explain the results. Measuring growth several times gives a clearer picture of whether benefits build over time rather than appearing by chance on a single day.
The study also took place with children in the United States, where undernutrition is less studied than in other parts of the world. Testing the approach in the same setting where it might be used helps make the findings more relevant to real families.
The trial was registered publicly before or during enrollment under the number NCT05161000, which reduces the chance that researchers changed their goals after seeing the data. The use of random assignment and multiple measurement points are strengths.
However, a large share of children did not complete the study according to the planned protocol. Only 89 of the 174 children in the supplement group (about 51%) and 82 of the 105 children in the coaching group (about 78%) were included in the main protocol-based analysis. Dropouts can affect results, so readers should view the findings with some caution. The published abstract also contains some incomplete statistical details, so the full paper should be read for precise numbers.
What the Results Show
The main goal was to measure how much each child’s weight-for-age score changed over 120 days. Children who received supplements plus coaching showed a larger improvement than children who received coaching alone. The average difference between the groups was 0.255 points on the standard growth scale, and researchers reported that this difference was statistically significant.
The benefit was not limited to weight alone. Researchers also looked at weight-for-height, body mass index for age, and other growth measures. Across these measures, the supplement group showed larger average scores and larger gains from the starting point at every measurement time reported. This pattern suggests the supplements influenced overall growth rather than only one number.
Some improvements were visible early. The weight-for-age score in the supplement group was higher than in the coaching group at both day 30 and day 120. This suggests that changes began within the first month, although the full picture of long-term growth is not yet known.
The number of children included in the main analysis was smaller than the number who enrolled, so the results describe children who stayed in the study long enough to be measured on the planned schedule. The researchers reported their findings based on these children.
Researchers also tracked food intake through the 24-hour recalls and questionnaires. These records help show whether the supplement drinks changed what children ate overall, or whether they simply added calories on top of a usual diet. Families who are considering supplements should keep in mind that a drink may replace some regular food, so the total picture matters.
The study design also allowed comparisons across several time points, which helps show whether growth was steady or came in bursts. Steady, gradual improvement is generally a more reassuring sign than a short spike.
Earlier research on oral nutrition supplements in children has often reported growth benefits, particularly in settings with limited food access or among children who are very underweight. Many earlier trials, however, were conducted in other countries or in hospital settings, which differ from the community setting studied here.
This trial adds evidence for a group of children in the United States who are undernourished but not necessarily hospitalized. It also tests supplements alongside diet counseling, rather than on their own, which reflects how these approaches are often used in practice.
The biggest limitation is the number of children who did not complete the study according to the protocol. About 49% of children in the supplement group and about 22% of children in the coaching group were not included in the main protocol-based analysis. When many participants leave a study, the remaining group may differ in ways that affect the results.
The study followed children for 120 days, which is a relatively short time. It does not show whether any growth gains last for years or whether they affect long-term health. The study also cannot tell us which children will benefit most or whether the supplements work as well for children with different health conditions or diets.
Much of the information about food intake came from parents or caregivers, who may not remember exactly what a child ate. The trial also did not show whether families can afford supplements over the long term. Finally, the published abstract contains some incomplete statistical details, so readers should check the full paper for precise numbers.
The Bottom Line
Research shows that for undernourished children in the United States, two daily servings of an oral nutrition supplement plus diet counseling improved growth more than counseling alone over 120 days. Confidence in this finding is moderate because it comes from a single randomized trial with substantial dropouts. Families should consider supplements as one part of a plan developed with a healthcare provider, not as a stand-alone fix.
Parents and caregivers of children who are underweight or growing more slowly than expected may find this research useful when talking with a pediatrician. Healthcare providers and dietitians who work with children may also find it relevant. Children with specific medical conditions, food allergies, or diets that may conflict with supplement ingredients should only use supplements under professional guidance. Children who are not undernourished are not the focus of this study, and the findings should not be applied to them without medical advice.
In this study, researchers measured growth at 30, 60, and 120 days, and measurable differences appeared by day 30. Most families should expect to review progress with a doctor over a few months rather than see dramatic changes within weeks. Growth in children is gradual, and a healthcare provider can help judge whether progress is on track.
Frequently Asked Questions
Do nutrition supplement drinks help undernourished children grow faster?
Research shows that undernourished children who drank two daily servings of an oral nutrition supplement with diet counseling gained more weight-for-age than children who received counseling alone. The 2026 trial of 279 children measured a 0.255 point difference after 120 days.
How long does it take for nutrition supplements to show growth benefits in children?
In a 120-day trial of undernourished U.S. children, growth differences between groups were visible at day 30 and continued through day 120. Longer-term effects are not yet known, so pediatricians typically track growth monthly to judge progress over several months.
What age range was studied in research on children’s nutrition supplements?
A 2026 randomized trial studied children aged 36 to 107 months, which is about 3 to 9 years old. Each child was undernourished based on arm measurement or body mass index, and the study tested two daily servings of supplements totaling 480 calories.
Should I give my undernourished child nutrition supplements without seeing a doctor?
Experts recommend talking with a pediatrician or registered dietitian before starting supplements. The research involved medical measurements and professional diet counseling, and supplements may not suit children with allergies, certain medical conditions, or specific dietary needs.
Want to Apply This Research?
- Log each supplement serving daily, and record your child’s weight and height once a month using the same scale and measuring tool. Also log a simple 24-hour food recall once a week to see how supplements fit into the overall diet.
- Set a daily reminder for each of the two supplement servings and pair them with existing routines, such as breakfast and an afternoon snack. Use the app to note any missed servings so patterns can be discussed with a healthcare provider.
- Track growth measurements monthly for at least 120 days, matching the study’s timeline, and review trends with a pediatrician every few months. Keep a running record of supplement use, appetite, and any side effects so the full picture is available at medical visits. Stop and consult a doctor if progress stalls or your child develops new symptoms.
This article summarizes a single clinical trial for general information only and is not medical advice. The study involved children under professional supervision, and results may not apply to every child. Always consult a pediatrician, registered dietitian, or other qualified healthcare provider before starting nutrition supplements or changing a child’s diet, especially if your child has a medical condition, allergy, or is taking medication.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.