are polyunsaturated fats good
1 Polyunsaturated fat. 2  This is a type of fat found mostly in plant-based foods and oils. 3  Evidence shows that eating foods rich in polyunsaturated fats (PUFAs) improves blood cholesterol levels, which can decrease your risk of heart disease. 4  PUFAs may also help decrease the risk of type 2 diabetes.5  Omega-3 fatty acids. Polyunsaturated fat. 2  This is a type of fat found mostly in plant-based foods and oils. 3  Evidence shows that eating foods rich in polyunsaturated fats (PUFAs) improves blood cholesterol levels, which can decrease your risk of heart disease. 4  PUFAs may also help decrease the risk of type 2 diabetes. 5  Omega-3 fatty acids.