One Brazil Nut each day provides you with your daily value of selenium, which research has suggested can reduce the risk of many cancers and reduce heart disease. Other minerals include copper, magnesium, manganese, potassium, calcium, iron, phosphorus, and zinc. They are also a good source of Vitamin E.
Try to eat the raw ones, and limit your intake to 1 or 2 since
excess consumption may result in selenium toxicity. I add it to a handful of cashews & walnuts.