Anti-cancer effect: selenium can reduce the activities of carcinogenic lipid peroxides and some hydroxylases that activate carcinogens, reduce lipofuscin deposition and delay aging; In patients with skin cancer, selenium supplementation can reduce the risk of cancer by 48%.

Immune function: selenium deficiency will weaken immune function. Experiments show that low selenium is related to the spread of a wart skin cancer and HIV in African countries. Selenium supplementation can improve immunity and oxidative regulation to fight diseases.