Pork is a healthy alternative to other meats. Pork is mostly made up of protein. The protein content of lean, cooked pork is around 26% by fresh weight. By dry weight, the protein content of lean pork can be as high as 89%, making it one of the richest dietary sources of protein. It contains a healthy amino acid profile. In fact, pork is one of the most complete dietary sources of protein. Pork is a rich source of many different vitamins and minerals. Unlike other meats, pork is ultimately rich in thiamine. Thiamin is one of the B-vitamins and plays an essential role in various body functions. Pork is also rich in selenium, zinc, vitamin B12, vitamin B6, niacin, phosphorus, and iron.