Findings

What do systematic reviews say?

2 questions · 2 findings · 2 reviews

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

Highest vs lowest green tea exposure

Lung cancer risk (17 studies) · adults (aged at least 18 years)

It is very uncertain whether highest changes lung cancer risk (17 studies) compared with lowest green tea exposure (very low certainty).

1 finding from 1 review

Green tea (Camellia sinensis) for the prevention of cancer 2020 · Cochrane Headline outcomes only
RR 0.88 [0.76, 1.02]
269565 participants
Very low

Highest vs lowest selenium exposure

Lung cancer risk (17 studies) · Participants in non experimental cohort studies on selenium and cancer

It is very uncertain whether highest changes lung cancer risk No. of participants: 371,067 (11 observational… compared with lowest selenium exposure (very low certainty).

1 finding from 1 review

Selenium for preventing cancer 2018 · Cochrane Headline outcomes only
OR 0.82 [0.59, 1.14]
Studies not reported
Very low