Below is an outline of the different methods of cooking food and how nutritional content is affected. (wholesomebabyfood.momtastic.com)
Other method of cooking on low heat or smoker cooking is to place the pork on the racks so that the smoke will start to form meats own juice. (rainydaymum.co.uk)
For this reason, pressure cooking may actually preserve nutrients better than other methods of cooking. (wellnessmama.com)