Nuts like almonds and walnuts are another type of food that is rich in nutrients. Similar to avocados, nuts are high in monounsaturated fats. Walnuts are rich in the plant variety of omega-3 fatty acids, which is a type of polyunsaturated fat connected to heart health. Nuts are also known to contain high amounts of protein. They are rich in L-arginine which is an amino acid known to help in the making of nitric oxide. This is known to help regulate blood pressure. Nuts contain plant compounds called phytosterols as well. Phytosterols are structurally similar to cholesterol. They block its absorption in the intestines and are one of the ways to help with how to lower cholesterol. Additionally, nuts are a rich source of calcium, potassium, and magnesium. These minerals help in lowering the risk of heart diseases and reduce blood pressure.