One in Three Youth With Type 1 Diabetes Struggle With Weight—Here's What Researchers Found

Managing type 1 diabetes is complex enough—but a new study suggests many young people face an additional challenge: excess weight. Researchers at Montreal Children's Hospital examined 352 youth with type 1 diabetes and found that nearly 30% were overweight or living with obesity. While these numbers may seem high, the condition has received relatively little attention in diabetes research and care conversations, prompting researchers to call it an 'underestimated health problem.'

The study looked at whether weight status was connected to other markers of diabetes management. Researchers found that young people requiring higher doses of insulin relative to their body weight were more likely to be overweight or obese. This pattern held true even after accounting for age, sex, how long they'd had diabetes, blood sugar control, and genetic ancestry.

Notably, when researchers focused only on youth with obesity, this relationship weakened after adjusting for other factors. This suggests the connection between insulin dose and weight is more complex than a simple one-to-one relationship.

The higher insulin requirements in youth with excess weight point toward a possible explanation: insulin resistance. In insulin resistance, the body doesn't respond as effectively to the insulin being delivered, so more of it is needed to manage blood sugar. This is a known challenge in type 2 diabetes, but it can also occur alongside type 1 diabetes.

Understanding whether insulin resistance is playing a role in this population could help guide treatment approaches and prevention strategies. However, this study doesn't prove a causal relationship—it simply identifies a pattern that warrants further investigation.

The researchers emphasize that more work is needed to understand why weight gain is common among youth with type 1 diabetes and what can be done about it. They call for future studies to identify modifiable risk factors—things that can actually be changed—and to develop obesity prevention strategies tailored to this population.

For now, this research underscores that weight management deserves more attention in type 1 diabetes care and that a collaborative approach involving diabetes specialists and other healthcare providers may be beneficial.

Source: Diabetes research and clinical practice. 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.