In Brazilian adults, people who consume more selenium tend to be women, older than 60, have higher income or education, drink alcohol, or engage in regular physical activity. People who consume less selenium tend to have non-white skin color or smoke.

In Brazil, people with lower income and non-white skin color tend to consume less selenium in their diet than those with higher income and white skin color, which may increase their risk of not getting enough of this essential nutrient.

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.

In Brazil, people who currently smoke consume about 7.77 micrograms less selenium per day than those who have never smoked or have quit, suggesting their diet tends to include less selenium-rich foods.