Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews

No studies found 0 · 0%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 2 · 100%

Mortality: all causes · healthy men

Selenium showed no clear difference in mortality: all causes compared with placebo (high certainty).

1 finding from 1 review

Drugs for preventing lung cancer in healthy people 2020 · Cochrane Headline outcomes only
RR 0.98 [0.86, 1.13]
1 study · 17448 participants
High

Mortality: all causes · healthy women, aged 35 to 60, and men, aged 45 to 60, living in France

Vitamins A, C, E + selenium + zinc showed no clear difference in mortality: all causes compared with placebo (high certainty).

1 finding from 1 review

Drugs for preventing lung cancer in healthy people 2020 · Cochrane Headline outcomes only
RR 0.88 [0.7, 1.11]
1 study · 12741 participants
High