Walnuts are a popular variety of tree nuts that are highly common in many baked goods. While they tend to have a great taste, walnuts are loaded with monounsaturated fats, which is where omega-three fatty acids come from. A typical one handful serving of walnuts contains around 200 calories per serving, but most of this energy comes in the form of omega three fatty acids. These fatty acids are highly protective against many environmental toxins and while walnuts are a good choice, you can also consume almonds and pecans if you desire. Consider eating one serving of nuts daily to help maintain your liver health and repeat daily for best results.