Low-Carb diet tested in teens with type 1 diabetes: safe or risky?

NCT ID NCT04955691

Completed Knowledge-focused Sponsor: Yale University Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study from Yale University looked at what happens when teenagers with type 1 diabetes follow a very low carbohydrate diet for two weeks. Nineteen participants ate either a low-carb or standard diet to see how it affected their blood sugar levels and brain function. The goal was to understand if these diets are safe and helpful for young people managing diabetes.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: low carbohydrate diet
What this could lead to: If successful, this could help doctors give better advice on whether low-carb diets are safe and effective for managing blood sugar in young people with type 1 diabetes.
What could go wrong: This was a very small, short-term study with only 19 participants, so results may not apply to everyone. The diet is restrictive and may be hard to follow long-term.

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Conditions

The condition(s) this trial relates to.

type 1 diabetes mellitus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

TYPE1DIABETES, LOW CARBOHYDRATE DIET

Contacts and locations

Locations

Yale-New Haven Hospital

New Haven, Connecticut, 06511, United States

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