NCT01942694

Vitamin D and Type 2 Diabetes Study

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 2,423 (actual)
• Sponsor: Tufts Medical Center · Academic / Other
• Sex: All
• Age: 30 Years
• Healthy volunteers: Not accepted

Summary

The goal of the Vitamin D and type 2 diabetes (D2d) study is to determine if vitamin D supplementation works to delay the onset of type 2 diabetes in people at risk for the disease and to gain a better understand how vitamin D affects glucose (sugar) metabolism.

Detailed description

The goal of the Vitamin D and type 2 diabetes (D2d) study is to determine if vitamin D supplementation works to delay the onset of type 2 diabetes in people at risk for the disease and to gain a better understand how vitamin D affects glucose (sugar) metabolism. Researchers at US sites will enroll people with pre-diabetes (people who have higher than normal blood glucose level but not high enough to meet the diagnosis of diabetes). The study will enroll participants over approximately 2 years and participants will be followed for approximately 3 years. Participants will receive either Vitamin D or a placebo by chance. Participants will take 1 pill a day for the duration of the study.

Conditions

• Prediabetes
• Type 2 Diabetes

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Vitamin D (Cholecalciferol)	Vitamin D (Cholecalciferol) 4000 IU, administered as 1 soft-gel pill daily by mouth.
OTHER	Placebo	Administered as one soft-gel pill daily by mouth

Timeline

• Start date: 2013-10-01
• Primary completion: 2018-11-01
• Completion: 2018-11-01
• First posted: 2013-09-16
• Last updated: 2022-08-16
• Results posted: 2020-09-09

Locations

25 sites across 1 country: United States