It is believed that walnuts are the second healthiest of all nuts, beaten only by almonds. They can be the perfect substitute to unhealthy snacks and junk food that people end up eating to satisfy untimely hunger. Every 100 gm of walnuts contains 654 calories with 65 g fat, 14 g carbohydrates, and 15 g proteins. They are rich in vitamin B6 and magnesium and loaded in antioxidants. They help reduce inflammation on account of the essential fatty acid called alpha-linolenic acid (ALA).