Walnuts serve as a powerful snack that offers 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)- Low in carbs (3.8g)- Fiber: 1.9g- Protein-packed: 4.3g- GI ~15, glycemic load = 1---Top Health Benefits of Walnuts1. **Cardiova