Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews · Lung Cancer

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

Incidence: all cancers · healthy men

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

1 finding from 1 review

Drugs for preventing lung cancer in healthy people 2020 · Cochrane Headline outcomes only
RR 1.01 [0.92, 1.11]
1 study · 17448 participants
High

Incidence: all cancers · 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 incidence: all cancers compared with placebo (high certainty).

1 finding from 1 review

Drugs for preventing lung cancer in healthy people 2020 · Cochrane Headline outcomes only
RR 0.96 [0.83, 1.1]
1 study · 12741 participants
High