what foods contain polyunsaturated fats
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.ome fats are found in foods from plants and animals and are known as dietary fat. Dietary fat is a macronutrient that provides energy for your body. Fat is essential to your health because it supports a number of your body's functions.