What We're Learning About Diabetic Ketoacidosis in Type 1 Diabetes: A French Study

Diabetic ketoacidosis (DKA) is a serious acute complication that can develop in people with Type 1 diabetes when the body cannot produce enough insulin. A new study from France set out to understand how often DKA actually occurs in everyday life and who is most at risk. Researchers looked at data from 2,685 people with Type 1 diabetes over a 12-month period, making this one of the largest real-world looks at DKA burden in recent years.

The study found that 4.5% of participants experienced at least one DKA episode in the year studied. While this might sound like a small percentage, it reflects a meaningful portion of the Type 1 diabetes population facing this serious complication.

The research revealed clear patterns about who faces higher DKA risk. Young adults between 18 and 24 years old had the highest rates, with more than 1 in 10 people in this age group experiencing DKA during the study period. Younger age overall, having been diagnosed with Type 1 diabetes at a younger age, and shorter time since diagnosis were all associated with increased DKA risk.

Higher blood sugar levels (measured by HbA1c) were also linked to DKA. This makes biological sense: when blood sugar control is more challenging, the risk of the metabolic imbalance that leads to DKA increases. The study participants who experienced DKA represented a group with multiple overlapping risk factors rather than a single high-risk profile.

One of the study's most hopeful findings involved the protective effect of modern diabetes technology. People using automated insulin delivery (AID) systems—sometimes called 'closed-loop' systems—had lower DKA rates (3.1%) compared to those using traditional open-loop insulin pumps or injections (5.4%).

Continuous glucose monitors (CGMs) were also protective. People using CGMs to track their blood sugar had DKA rates of 4.3%, compared to 8.1% for those using older fingerstick blood testing methods. These findings suggest that real-time blood sugar information and automated insulin adjustments may help reduce DKA risk, though the study cannot prove that the technology itself causes the reduction.

The study uncovered another important pattern: people who experienced DKA were much more likely to also have severe low blood sugar episodes (27% versus 8.5% for those without DKA). This suggests that people at risk for DKA may face a 'double burden'—they experience both serious highs and serious lows, which makes diabetes management more complex and potentially more dangerous.

Understanding this connection may help healthcare teams identify people who need additional support, monitoring, and resources to prevent both types of dangerous blood sugar extremes.

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.