13/12/2021
But there wasn't just a connection formed between taking a selenium supplement and the risk of prostate cancer. Results also found that just patients who had low baseline selenium levels in their systems and took vitamin E supplements alone were 111 percent more likely to develop high-grade prostate cancer than patients taking a placebo during the study.
Researchers also found that men who started with high selenium levels were no more likely to develop prostate cancer than men who began with low levels. The team says this establishes that added selenium in supplement form and not from food was the reason for the increased cancer risk.