Foods such as fruits, some vegetables (tomatoes, mushrooms, broccoli ...), meat (beef, pork, turkey ...), fish and shellfish, eggs ... are foods high in selenium. In general and to be clear, where there are proteins, there is selenium.
Selenium is a trace element with multiple properties. It is primarily a powerful antioxidant that will neutralize free radicals responsible for premature aging of cells. Selenium is also very good for your view and would avoid the retinal degeneration related to age.
Selenium is also recommended to maintain a robust immune system and brain alert, two more reasons to regularly consume foods high in selenium. The recommended daily dose of selenium is 55 micrograms.