Research
Micronutrients & recovery
There is no highly convincing evidence of a clear role of vitamin D for any health outcome, as observational associations often fail to replicate in randomised controlled trials.
Do not expect Vitamin D supplements to prevent chronic diseases like cancer, heart disease, or diabetes based on current high-quality evidence. It is important for basic health, but supplementation for disease prevention is not strongly supported.
StrongRefutesVERY_HIGH confidence
highly convincing evidence of a clear role of vitamin D does not exist for any outcome
Why this rating
Umbrella review of 107 systematic reviews and 74 meta-analyses of observational studies and 87 meta-analyses of RCTs.
Source
Vitamin D and multiple health outcomes: umbrella review of systematic reviews and meta-analyses of observational studies and randomised trials
Evropi Τheodoratou et al. · BMJ · 2014
DOI 10.1136/bmj.g2035
Meta-analysis · 268 studiesCited 974×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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