Walnuts are a nutritious snack that delivers a variety of health benefits. Besides flavor, they are loaded with heart-healthy fats.---Nutrition Overview (Per 1 oz)- Calories: 183- Fat: 18g (mostly polyunsaturated)- Carbs: 3.8g- Rich in fiber: 1.9g- Protein: 4.3g- Low glycemic impact---Top Health Benefits of Walnuts1. **Cardiovascular Support**