In Brazilian adults, the majority of selenium intake comes from nuts, cooked fish, and boneless meat, with nuts providing nearly 29% of total selenium consumption.

Selenium is a mineral found in certain foods such as organ meats, seafood, eggs, dairy products, nuts, and cruciferous vegetables.

Brazilian adults who drink alcohol tend to consume about 4.38 micrograms more selenium per day than those who do not drink, likely because their diets include more selenium-rich foods like meat and fish.

People in Galicia, Spain, who eat more seafood tend to have higher levels of selenium in their blood, and those with sufficient selenium levels typically eat about four servings of fish per week.