Diluted Insulin in Automated Systems May Reduce Dangerous Lows in Very Young Children

Infants and toddlers with Type 1 diabetes face a unique challenge: their bodies need only tiny amounts of insulin—often 6 units per day or less. Standard insulin (called U100) is designed for much larger doses, making it nearly impossible for automated insulin pumps and delivery systems to deliver small enough amounts accurately.

This dosing mismatch can lead to dangerous lows (hypoglycemia) when the system accidentally gives too much insulin, or high blood sugars when it cannot give enough. Diluted insulin (U10), which is ten times weaker than standard insulin, may solve this problem by allowing automated systems to make finer adjustments.

Researchers studied 19 children aged 0 to 4 years who switched to diluted insulin in an automated insulin delivery system between 2020 and 2025. They compared glucose patterns in these children to 27 matched children using standard insulin in automated systems.

After 3 months on diluted insulin, dangerous low blood sugar episodes dropped sharply. The time children spent with glucose below 3.9 mmol/L fell from 4.6% to 2.7%. Even more severe lows (below 3.0 mmol/L) dropped from 1.2% to 0.4%. These improvements remained stable through 12 months of follow-up.

Compared to children using standard insulin, those on diluted insulin had significantly fewer dangerous lows at later check-ups. The difference was measured at 9 and 12 months, even after accounting for overall blood sugar control (HbA1c).

This was a small study, but it found no safety concerns with diluted insulin in automated systems over the 12-month period. The results suggest that diluted insulin may be a valuable tool for helping very young children with Type 1 diabetes achieve safer blood sugar patterns.

More research with larger numbers of children will be needed to confirm these findings and understand which young children benefit most from this approach. Families interested in whether diluted insulin might help their child should discuss this with their diabetes care team.

Source: Diabetes, obesity & metabolism. Evidence type: PubMed indexed literature. Type1Cure is an information and intelligence hub, not a medical advice service. This article summarizes published research and does not provide diagnosis, treatment, or personal medical guidance. Always talk to your own care team before changing anything about your Type 1 diabetes management.