Brazilian nuts are seeds of the same group as walnuts, almonds and other oilseeds. It is rich in good fats, minerals and phytochemicals, having a high nutritional value. These nuts contain abundant antioxidant substances, especially selenium. A single nut provides almost 100 mcg of selenium, which corresponds to 150% of the recommended daily dose. Chestnuts have phenolic compounds and flavonoids and are rich in vitamin E, phytosterols and squalene. Its beneficial effects are due to its antioxidant and antiproliferative action, which reduces the risk of atherosclerosis and cancer.