Pistachio is a type of tree nut that has many health benefits for the body. Pistachios are an excellent source of protein, antioxidants and fiber. Pistachio is one of the low-calorie nuts that people can enjoy its health benefits. These delicious nuts reduce the risk of cancer and other diseases. Most nuts are high in protein for their size, and pistachios are no exception. Research has shown that pistachios can help prevent heart disease by increasing the levels of fats that are good for the heart. Pistachios can also lower bad cholesterol and reduce the risk of heart disease.