Clinical trials

The goal of this clinical trial is to learn whether a modified food supplement is acceptable and well tolerated by children aged 12 to 24 months with mild-to-moderate stunting in rural Guatemala. The study will also explore whether the food is associated with short-term changes in stool markers related to gut inflammation and microbial activity. The main questions are: * Will children accept and regularly eat the modified food supplement? * What stomach or bowel symptoms, if any, occur while children eat the supplement? * Do stool markers related to gut health change over the short study period? Researchers will compare the modified food supplement with Nutri Listo, a small-quantity lipid-based nutrient supplement already used in Guatemala. Children will be assigned by chance to one of the two groups. Participants will: * Complete a brief taste and acceptability test * Eat one 30-gram sachet of the assigned food each day for 21 days * Have their caregiver receive brief phone or WhatsApp check-ins during the study * Provide a stool sample near the beginning and end of the study This is a small pilot study. It is designed to assess feasibility, acceptability, tolerability, and early biological signals rather than to determine whether the modified food improves growth or other clinical outcomes.