SELENIUM YEAST 1.7% is produced by growing Saccharomyces cerevisiae in a selenium rich medium and then the yeast absorbs selenium to convert it into naturally found form of selenium in foods that is selenomethionine. It helps in the prevention of cataracts, prostrate and bladder cancer. It activates glutathione peroxidase enzyme which in turn protects cells from oxidative injury. Moreover, selenium also may be related to decreased level of cognitive abilities.