Then explain what Jesus meant in John 6:63. He explained that the Spirit and His words were the bread of life.
Speaking of believing (and DNA testing), check this out: Eucharistic Miracle of Lanciano!
Is it your contention that every Communion results in the same miracle? If so, why is this a "Miracle" if it is so commonplace? Can I go and attend a Catholic mass, keep the host, and have it analyzed for DNA and chemical composition of human flesh?
66 and 67 come after 63.