Brazil nuts are a rich source of unsaturated fatty acids that help fight cardiovascular disease. These fatty acids also contribute to the high caloric content that exists in them, which helps to reduce bad or LDL cholesterol and increase good or HDL cholesterol in the blood. This nut is known for being the greatest source of Selenium, which is necessary for the proper functioning of the thyroid gland, discouraging the aging process and stimulating the immune system. Its adequate intake can reduce the risk of breast, prostate, lung, skin and colon cancer, as well as being an important source of antioxidants, important against premature aging and Parkinson's and Alzheimer's disease. The high protein and fiber content of Brazil nuts also helps to control hunger and lose weight.