Comparing prawns and chicken, prawns have less fat but more cholesterol than chicken. Prawns are an excellent source of protein and a good way to get iron, zinc and vitamin E. As a bonus, they have very little fat and virtually no saturated fat and are a good source of omega 3 fatty acids. But prawns do contain cholesterol. A serving of 100 grams of flesh from prawns will provide approximately 130 mg cholesterol, whereas 100 gm of chicken contains approximately 80 mg or lesser cholesterol. Prawns themselves have virtually no saturated fat, so as long as you have them grilled, barbecued, steamed or cooked with a good unsaturated fat, they should not cause problems. Like all seafood, prawns contain omega 3 fatty acids. These valuable fats lower triglyceride levels and have many other benefits for heart health.