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Cancer risk

Few studies have looked at overall cancer risk. A lot more studies have looked at specific types of cancer.

Research analysis led by and reviewed by the Examine team.
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Summary of Cancer risk

Scientific Information on Cancer Risk

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Human Effect Matrix

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The Human Effect Matrix looks at human studies to tell you what supplements affect Cancer risk.

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Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Supplement Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-c - - See study
No significant influence on overall cancer risk associated with prolonged usage of EGb-761 in elderly individuals
grade-d Notable Very High See 2 studies
Has been associated with over half the risk of all tested forms of cancer, possibly confounded with a healthy lifestyle in general (as the study in question did not exert many controls)