Evidence Question
Does Vitamin D supplementation lower HbA1c?
Related to: Supplements and NutraceuticalsShort answer
Vitamin D supplementation may lower HbA1c.
Evidence at a glance
- Evidence strength
- Strong Evidence
- Supporting research
- 5 studys
- Randomized trials
- 4 trials
Why do we say this?
Across 5 studies, including 4 randomized trials, findings are consistent and showed an effect on HbA1c with Vitamin D supplementation.
Explore the evidence
Supporting research
5 published studys
- High-Dose Vitamin D3 Does Not Improve Glycaemic Control in Type 2 Diabetes
- Vitamin D supplementation improves ankle-brachial index in type 2 diabetes patients
- High-Dose Vitamin D May Prolong Remission in Type 1 Diabetes
- Vitamin D supplementation shows little effect on glycemic control in type 2 diabetes
- Vitamin D may not delay diabetes in women with prediabetes