Quick Navigation

Cancer Mortality

Research analysis led by Kamal Patel.
All content reviewed by the Examine.com Team. Published:
Last Updated:

Summary of Cancer Mortality

Primary Information, Benefits, Effects, and Important Facts

Scientific Information on Cancer Mortality


Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect cancer mortality
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.
Outcome 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-b Melatonin Minor - See study
There appears to be a significant protective effect on life in cancer patients with solid tumors, although the protective effect does not reach 'half risk' (RR of 0.50) and fluctuates in the range of quarter risk.
grade-c Vitamin K Notable Very High See 2 studies
Although the studies have used superloading of vitamin K (40mg or more) and only in hepatic cancers, the reduction in mortality risk and prolongation of survival times appears to be quite notable
grade-c Vitamin E - Moderate See 2 studies
Despite a small reduction in prostate cancer mortality seen in smokers with low dose (50mg) vitamin E, this does not appear to hold true as a general statement for all cancer types in most persons.
grade-d Garlic  

All comparative evidence is now gathered in our ​A-to-Z Supplement Reference.

The evidence for each separate supplement is still freely available ​here.