Vitamin C vs placebo
Vitamin C showed no clear difference in incidence: all cancers compared with placebo (high certainty).
- RR 1.03 [0.94, 1.13]2 studies · 14953 participantsHigh
Vitamin C showed no clear difference in incidence: all cancers compared with placebo (high certainty).
Vitamin C showed no clear difference in mortality: all cancers compared with placebo (high certainty).
Vitamin E showed no clear difference in incidence: lung cancer compared with placebo (high certainty).
Vitamin E showed no clear difference in mortality: lung cancer compared with placebo (high certainty).
Vitamin E leads to higher adverse events: haemorrhagic stroke compared with placebo (high certainty).
Vitamin E showed no clear difference in incidence: all cancers compared with placebo (high certainty).
Vitamin E showed no clear difference in mortality: all cancers compared with placebo (high certainty).
Vitamin E showed no clear difference in mortality: all causes compared with placebo (high certainty).
Vitamin C showed no clear difference in incidence: lung cancer compared with placebo (moderate certainty).
Vitamin C showed no clear difference in incidence: lung cancer ‐ men compared with placebo (high certainty).
It is very uncertain whether vitamin D changes ulcer healing (absolute change in individual parameters of ulcer… compared with placebo (very low certainty).
It is very uncertain whether vitamin D changes ulcer healing (absolute change in individual parameters of ulcer… compared with placebo (very low certainty).
It is very uncertain whether vitamin D changes ulcer healing (absolute change in individual parameters of ulcer… compared with placebo (very low certainty).
The review found no eligible studies for this question.
The review found no eligible studies for this question.
The review found no eligible studies for this question.
The review found no eligible studies for this question.
The review found no eligible studies for this question.
It is very uncertain whether vitamin D changes death (all causes) compared with placebo or no treatment (very low certainty).
It is very uncertain whether vitamin D changes cardiovascular death compared with placebo or no treatment (very low certainty).