Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

103 questions · 109 findings · 16 reviews

No studies found 19 · 17.4%GRADE not reported 5 · 4.6%Very low 35 · 32.1%Low 23 · 21.1%Moderate 23 · 21.1%High 4 · 3.7%

B vitamins vs placebo

Supplementation with beta‐carotene + vit C + vit E Overall cognitive functioning · cognitively healthy people in mid and late life
6 findings from 1 review
Show 3 more findings