Studies show that eating tree nuts, about five times a week can help lower the risk of death due to heart disease. Like other nuts, pine nuts are high in beneficial monounsaturated fats, magnesium and vitamin E, which work together to protect the heart. Pine nuts also naturally contain plant sterols, a compound that can help lower low-density lipoprotein (LDL) cholesterol levels. Eating tree nuts, including pine nuts, is associated with lower waist circumference, body mass index and blood pressure.