Brazil nuts have a high proportion of monounsaturated fat which is a good fat but they also contain some protein as well as being a good source of important nutrients including magnesium zinc calcium vitamin E and some B vitamins.They are very High in Selenium Contents. Hazel Nuts are a natural source of energy as they are high in Vitamin B Vitamin E Calcium Fiber Iron Zinc Potassium and Magnesium. Easily contributes to the daily intake requirements.