Final answer:
Polysaturated fats are a healthier type of unsaturated fat found in foods like safflower and soybean oils, nuts, and seeds. They help improve cholesterol levels and are recommended over saturated fats for better heart health.
Step-by-step explanation:
Polysaturated fats, which are a type of unsaturated fats, include multiple double bonds within their fatty acid chains. Good examples of foods high in polyunsaturated fats are safflower and soybean oils, as well as many nuts and seeds. Not all unsaturated fats are inherently good; they should be consumed in moderation, as part of a balanced diet. However, they are generally healthier than saturated fats, which are solid at room temperature and mostly found in animal products like meat and milk products, and certain tropical oils. Consuming unsaturated fats is associated with improved cholesterol levels and reduced heart disease risk. It is recommended that North Americans replace saturated fats with unsaturated options, including both monounsaturated and polyunsaturated fats, to support cardiovascular health.