Findings

What do systematic reviews say?

8 questions · 8 findings · 3 reviews · Metabolic and Endocrine Disorders

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No studies found 3 · 37.5%GRADE not reported 0 · 0%Very low 0 · 0%Low 3 · 37.5%Moderate 2 · 25%High 0 · 0%

Vitamin D vs placebo or no intervention

Cancer mortality in trials using vitamin D3 (cholecalciferol) ( · healthy participants or recruited among the general population; individuals diagnosed with a specific disease in a stable phase or with…

Vitamin D may leads to lower cancer mortality in trials using vitamin D₃(cholecalciferol) compared with placebo or no intervention (low certainty).

1 finding from 1 review

Vitamin D supplementation for prevention of cancer in adults 2014 · Cochrane Headline outcomes only
RR 0.88 [0.78, 0.98]
4 studies · 44492 participants
Low

Vitamin D vs placebo or no intervention

All‐cause mortality · healthy participants or recruited among the general population; individuals diagnosed with a specific disease in a stable phase or with…

Vitamin D may leads to lower all‐cause mortality compared with placebo or no intervention (low certainty).

1 finding from 1 review

Vitamin D supplementation for prevention of cancer in adults 2014 · Cochrane Headline outcomes only
RR 0.93 [0.88, 0.98]
15 studies · 49866 participants
Low

Vitamin D plus calcium vs vitamin D

All‐cause mortality

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin D, calcium or a combination of vitamin D and calcium for the treatment of nutritional rickets in children 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin D plus calcium vs calcium

All‐cause mortality

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin D, calcium or a combination of vitamin D and calcium for the treatment of nutritional rickets in children 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Cancer mortality in trials using vitamin D3 (cholecalciferol) ( · adults

The intervention probably leads to lower cancer mortality in trials using vitamin D3 (cholecalciferol) ( (moderate certainty).

1 finding from 1 review

Vitamin D supplementation for prevention of mortality in adults 2014 · Cochrane Headline outcomes only
RR 0.88 [0.78, 0.98]
4 studies · 44492 participants
Moderate

Intervention not reported

All‐cause mortality in trials using vitamin D3 (cholecalciferol) ( · adults

The intervention probably leads to lower all‐cause mortality in trials using vitamin D3 (cholecalciferol) ( (moderate certainty).

1 finding from 1 review

Vitamin D supplementation for prevention of mortality in adults 2014 · Cochrane Headline outcomes only
RR 0.94 [0.91, 0.98]
38 studies · 75927 participants
Moderate

Intervention not reported

Cardiovascular mortality in trials using vitamin D3 (cholecalciferol) ( · adults

The intervention showed no clear difference in cardiovascular mortality in trials using vitamin D3… (low certainty).

1 finding from 1 review

Vitamin D supplementation for prevention of mortality in adults 2014 · Cochrane Headline outcomes only
RR 0.98 [0.9, 1.07]
10 studies · 47267 participants
Low

Intervention not reported

All‐cause mortality

The review found no eligible studies for this question.

1 finding from 1 review

Vitamin D, calcium or a combination of vitamin D and calcium for the treatment of nutritional rickets in children 2020 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found