Add Selenium-Rich Foods to Your Diet

Selenium is a necessary mineral and a cofactor for glutathione, which means it is a substance required for glutathione activity. The best sources of selenium include organ meats, beef, chicken, fish, cottage cheese, brown rice, and Brazil nuts.

You may be able to increase or maintain your body's production of glutathione by increasing your selenium intake. For adults, the Recommended Dietary Allowance (RDA) for selenium is 55 mcg. This is based on the quantity required to maximize the production of glutathione peroxidase. In one study, 45 patients with chronic kidney disease were examined to determine the effects of selenium supplementation. For three months, each of them received 200 mcg of selenium daily. It's worth noting that all of their glutathione peroxidase levels dramatically increased. Another study found that patients receiving hemodialysis had higher levels of glutathione peroxidase after taking selenium supplements. Once more, the studies mentioned above focused on supplements rather than foods high in selenium.