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Type One Diabetes and Low Carb Study

Investigation of Glycemic Control Among an International Community of People With Type 1 Diabetes Following a Low Carbohydrate Diet

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT02839174
Enrollment
340
Registered
2016-07-20
Start date
2016-09-30
Completion date
2017-03-31
Last updated
2017-06-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetes Mellitus, Type 1

Keywords

low carbohydrate diet

Brief summary

The investigators have identified a support group on social media with \ 1500 members (children and adults), the majority of whom have T1DM and follow a carbohydrate-restricted diet. Many participants report exceptionally low HbA1C and insulin requirements. If these anecdotal reports are reflective of a large group of people with type 1 diabetes, a clinical trial would be warranted. The investigators propose to survey the above-mentioned group and their professional diabetes care providers to characterize glycemic control and explore associated dietary and diabetes care factors.

Detailed description

The surveys will address questions in the following domains: 1) Diabetes diagnosis and treatment; 2) Carbohydrate-restricted diet; 3) Insulin regimen; 4) Other diabetes related care; 5) Diabetes complications; 6) Other related health and healthcare; 7) Patient provider interactions; 8) Socio-demographics. Drafts of these surveys are included in the appendix of this protocol.

Interventions

None listed

Sponsors

Boston Children's Hospital
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Adult patients with a diagnosis of T1DM who are currently on insulin treatment or * Adults who are a parent or guardian of a child with T1DM who is currently on insulin treatment and * Self-reported use of a regimen including carbohydrate restriction for at least 3 months

Exclusion criteria

* Women who are pregnant or breastfeeding.

Design outcomes

Primary

MeasureTime frameDescription
Hemoglobin A1Cwithin 3 month of taking the surveyself reported, confirmed by professional diabetes care provider if possible

Secondary

MeasureTime frameDescription
total daily dietary carbohydratewithin 3 month of taking the surveyself reported
diabetes-related complication rates - diabetic ketoacidosis, hypoglycemiatimeframe since staring low carb diet (at least three months)
total daily insulin dosewithin 3 month of taking the surveyself reported, confirmed by professional diabetes care provider if possible
change in HbA1Ccurrent (within three months of taking the survey) - baseline (last available pre-carbohydrate-restricted diet)self reported, confirmed by professional diabetes care provider if possible
patient-physician relationshipwithin 3 month of taking the surveyself reported, complemented by professional diabetes care provider if possible
BMIwithin 3 month of taking the surveyself reported, confirmed by professional diabetes care provider if possible

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026