Selenium is involved in the production of prostaglandins in the body, which regulate inflammation and may reduce inflammation related to Rheumatoid arthritis.
A study out of the Netherlands has linked selenium intake to a lower risk of prostate cancer. Researchers tested the levels of selenium in the toenails of study participants, a marker that measures long-term selenium intake. The researchers found that the greater the level of selenium in the toenail, the lower the risk for prostate cancer in study participants. Of note, earlier studies investigating a link between selenium and prostate cancer had varying results.2
Selenium works in close conjunction with vitamin E as an antioxidant to prevent the formation of free radicals and in turn, may reduce the risk of skin cancer and prevent sunburn.