Walnuts are a versatile snack that packs a variety of health benefits. Besides flavor, they are loaded with fiber and antioxidants.---Walnut Nutrient Facts- 183 calories per serving- Fat: 18g (mostly polyunsaturated)- Carbs: 3.8g- Fiber: 1.9g- Protein: 4.3g- GI ~15, glycemic load = 1---Top Health Benefits of Walnuts1. **Cardiovascular Support**