Selenium supplements prevent cancer
evidence
The Claim
A common belief is that taking selenium supplements can reduce the risk of developing cancer. This stems from the role of selenium as an antioxidant, which can theoretically protect cells from damage that leads to cancer.
Origin
This myth largely originates from early epidemiological studies and animal research that suggested a potential protective effect of selenium against cancer.
What Science Says
Recent meta-analyses and randomized controlled trials (RCTs) do not support the claim that selenium supplements prevent cancer. For instance, the Selenium and Vitamin E Cancer Prevention Trial (SELECT) showed no significant reduction in prostate cancer risk with selenium supplementation. Overall, evidence suggests no consistent benefit for cancer prevention at population levels.
Verdict
Mostly False