Walnuts remain a powerful snack that offers a variety of health benefits. Besides flavor, they are loaded with omega-3s.---Walnut Nutrient Facts- Calories: 183- Fat: 18g (mostly polyunsaturated)- Low in carbs (3.8g)- Rich in fiber: 1.9g- Protein: 4.3g- Low glycemic impact---Why Walnuts Are Great for You1. **Heart Health** Rich in ALA for heart