Carb showdown: which diet best controls type 1 diabetes?
NCT ID NCT03761186
First seen Jul 20, 2026 · Last updated Jul 21, 2026 · Updated 1 time
Summary
This study tests how different amounts of dietary carbohydrates affect insulin needs and blood sugar control in adults with type 1 diabetes. Participants are randomly assigned to one of three diets: a traditional diet with 50-60% of calories from carbs, a moderately low-carb diet (30-40% carbs), or a strictly low-carb diet (15-20% carbs). The main goal is to see if lower-carb diets reduce the amount of insulin needed while maintaining good metabolic control over six months.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- three diets with different carbohydrate levels: traditional (50-60% carbs), moderately low (30-40% carbs), and strictly low (15-20% carbs)
- What this could lead to
- If successful, this trial could provide clear dietary guidance for people with type 1 diabetes, potentially reducing insulin needs and improving blood sugar control.
- What could go wrong
- This is a relatively small, single-center study with 103 participants, and dietary adherence can be challenging. Results may not apply to everyone with type 1 diabetes.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
-
Center for Diabetes, Academic Specialistcenter
Stockholm, 11365, Sweden
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