Breakthrough
Selenium Yeast vs Selenomethionine vs Selenite: Form, Bioavailability, and the Trial Legacy
May 12, 2026 · 3 min read · Selenium is an essential trace element used by 25 human selenoproteins — most notably the glutathione peroxidases and the iodothyronine deiodinases. Its supplement form is unusually consequential because trial outcomes have diverged sharply by chemical species. The two big U.S. t…