Peanuts are a good source of protein for energy, and 100 grams of peanuts has 50 grams of fat, 16 grams of carbohydrates and 26 grams of protein. Peanut fats are unsaturated and useful. Magnesium in peanuts helps muscle cramps. Prevents type 2 diabetes. And because of the content low saturated fat and high amount of unsaturated fat, it can reduce the risk of .heart disease