Intervention
Vitamin D supplementation
Intervention
Strong
Very Positive
Consistent
6 studies · 5 RCTs
Outcome
Serum 25-hydroxyvitamin D
Outcome
Evidence Question
Does Vitamin D supplementation improve Serum 25-hydroxyvitamin D?
Related to: Supplements and NutraceuticalsShort answer
Vitamin D supplementation appears to improve Serum 25-hydroxyvitamin D.
How the evidence connects
Each connection shows the published evidence classification for that intervention and outcome relationship.
Why do we say this?
Multiple studies contribute evidence to this Question, and their findings generally point in the same direction.