Vitamin D efficacy in type 1 and type 2 diabetes.
Study Goal
The researchers aimed to evaluate the potential extraskeletal effects of vitamin D, particularly its role in preventing type 1 and type 2 diabetes.
Results Summary
Observational studies and meta-analyses suggest vitamin D may help prevent type 1 and type 2 diabetes, but RCTs show inconsistent results regarding its efficacy.
Population
General population, with focus on diabetes incidence.
Effective Dosage
Not specified
Duration
Not specified
Interactions
None mentioned
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
vitamin D | neutral | calcium and bone metabolism | - | - | has a profound effect on | #1 |
vitamin D deficiency | increase | various diseases, including type 1 and type 2 diabetes | - | - | is associated with an increased incidence of | #2 |
vitamin D intake | neutral | type 1 diabetes | - | no randomized controlled trials | has been evaluated for preventing the onset of | #3 |
vitamin D supplementation | neutral | type 2 diabetes development | - | inconsistent results | has been evaluated for preventing | #4 |
vitamin D or active vitamin D administration | decrease | type 1 and type 2 diabetes | - | - | is effective in preventing the incident of | #5 |
It is well known that vitamin D has a profound effect on calcium and bone metabolism, but its influence on other organs (extraskeletal effect) has been proposed. Consistently, vitamin D deficiency is associated with an increased incidence of various diseases, including type 1 and type 2 diabetes, as reported by many observational studies. However, there has been no consensus on whether vitamin D deficiency is a causative factor in the incidence of diabetes mellitus. There have been no randomized controlled trials (RCTs) aimed at preventing the onset of type 1 diabetes with vitamin D intake. In addition, the results of RCTs evaluating the preventive effect of vitamin D supplementation on type 2 diabetes development have been inconsistent. The recent observational studies, randomized controlled trials, and meta-analyses are confirming that vitamin D or active vitamin D administration is effective in preventing the incident of type 1 and type 2 diabetes.