Research has actually shown that sword-swallowing can cause sore throats! No kidding! This particular research was based on 110 sword-swallowers from 16 different countries and was published in the British Medical Journal in 2006. This research won the 2007 Ig Nobel Prize in Medicine. Watch a YouTube Video of a sword-swallower in action: ENTs regularly perform a similar procedure when we perform "Direct Esophagoscopy". Just like a sword, it is an elongated rigid metal …