It is not prohibited in Christianity,but it is considered optional among Christians,whom debate Old vs New Testament. See Mark 7 , Colossian 2:20-22, 1 Timothy 4-4,and Acts 11:6-10. Old Testament dietary laws , of which there are @612, were meant for the Israelites to differentiate themselves from pagans. Every creature created by God is good and nothing to be refused as long as received with thanksgiving (again Timothy 4:4). This is part of the New Covenant that was established by Jesus. But again this is also a matter of personal choice among Christians even today.