The Brazilian Walnut (Bertholletia excelsa) is the fruit of the South American tree of the Lacythidaceae family.
The Brazilian nut is extremely rich in selenium, and is a good source of minerals. An odious source is calcium, potassium, iron, phosphorus, zinc, copper and manganese, as well as vitamins C, E and B6. It contains a large amount of omega-3 and omega-6 fatty acids.
Selenium is the strongest antioxidant, protector of human cells from the harmful aggressive action of so-called free radicals and other harmful agents. World-famous psychologists David Benton and Richard Cook from the UK have found that if a person with food does not consume sufficient amounts of selenium, he becomes upset, depressed, melancholic and chronically tired. But if the food enters sufficient optimal amounts of selenium, the mood and general health improve. Mood enhancement is probably due to the antioxidant properties of selenium, which improves human mental functions and provides a better blood flow to the brain.
Brazil nut is known for having the highest amount of selenium, hence the epithet that improves mood. However, be cautious! Due to the extremely high amount of selenium it contains.