The most healthful dietary lipid to consume is unsaturated fat. Unsaturated fats are typically liquid at room temperature and are found in foods like olive oil, avocados, nuts, and fatty fish. They can help reduce bad cholesterol levels, lowering the risk of heart disease.
Regarding Part C, a lipid that the body requires to make several critical substances is cholesterol. Cholesterol is essential for producing certain hormones, vitamin D, and bile acids that help digest fats. The body can produce cholesterol on its own, but it can also be obtained from animal-based foods.