You should eat a low-fat, low-cholesterol diet while taking Crestor (rosuvastatin). You may eat egg whites, cottage cheese, fish, poultry, vegetables, and fat-free milk. Use monounsaturated oils, such as olive, canola, soy, and sunflower oils. Avoid fatty meats, egg yolks, cream, butter, shortening, whole milk, cakes, cookies, pastries, gravy, peanut butter, chocolate, potato chips, coconuts, cheese other than cottage cheese, palm and coconut oils, and fried foods. Crestor may also result in insomia, depression or nightmares.