A *-ounce serving of roasted pistachios contains *2.*1 grams of fat, of which 1.5 grams are saturated. The remaining fat in a serving of pistachios is in the form of healthy monounsaturated and polyunsaturated fats. These unsaturated fats can help reduce your cholesterol levels and can cut your risk of type 2 diabetes and cardiovascular disease.

Pistachios contain 5.*4 grams of protein and 2.8 grams of fiber in 1 ounce. The same serving of pistachios supplies 1.*4 grams of iron toward your daily requirement of 8 to *8 milligrams. You need plenty of iron to support a healthy immune system, prevent fatigue and form red blood cells. A *-ounce serving of pistachios provides **3 milligrams of the **0 milligrams of phosphorus you need each day. Phosphorus helps support a strong skeleton. A serving of pistachios also contains 0.*9 milligrams of vitamin E toward your daily goal of *5 milligrams. This nutrient prevents cell damage and aids your body in making red blood cells. A drawback to pistachios is that one serving of the roasted and salted variety contains **1 milligrams of sodium. Too much sodium contributes to heart disease and high blood pressure.

The omega*3 fatty acids present in a serving of pistachios can help lower your blood pressure and protect against abnormal heartbeat, according to MayoClinic.com. The nuts might also reduce your risk of heart disease. A ***8 article published in the "American Journal of Clinical Nutrition" notes that eating nuts on a regular basis can reduce your risk of cardiovascular disease. The study reports that pistachios in particular can help reduce cholesterol.