Some 17 metal objects - including nails, a watch clasp and a knife - were removed by doctors in Trujillo in Peru from a man's colon and stomach.
Luis Zarate was taken to the hospital by his family after he complained of sharp stomach pains.
While at the medical centre, the 'metal eating' man's chest X-rays were taken which revealed his insides littered with screws.
"There were 17 strange objects found at the level of his stomach and colon. The objects had caused the stomach to expand," News.com.au quoted Dr Julio Acevedo, one of the surgeons who operated him, as saying.
The doctors also said that this man was mentally ill but they could not tell why he ate the metal.