Theyre particularly high in selenium, a mineral with potent antioxidant properties. Eating Brazil nuts may reduce inflammation, support brain function, and improve your thyroid function and heart health. To avoid consuming too much selenium, limit your intake to one to three Brazil nuts per day.

What happens if I eat 5 Brazil nuts a day?

If you eat too many, or consume them in addition to selenium supplements, you could ingest too much selenium. This may result in selenosis which can cause symptoms such as hair loss and brittle nails in some individuals.