Originally posted by BHFan25
Once you put that host in your mouth, are you saying it becomes his body as in you are literally eating flesh?
It become Christ's body & blood during the Eucharist. That's why, as in the Bishops' statement, those who do not believe this are asked to refrain from coming to Communion. It is not just "bread".
Here's one explanation: "Third, you must believe in the doctrine of transubstantiation. "For anyone who eats and drinks without discerning the body eats and drinks judgment upon himself" (1 Cor. 11:29). Transubstantiation means more than the Real Presence. According to transubstantiation, the bread and wine are actually transformed into the actual body, blood, soul, and divinity of Christ, with only the appearances of bread and wine remaining. This is why, at the Last Supper, Jesus held what appeared to be bread and wine, yet said: "This is my body. . . . This is my blood" (Mark 14:22-24, cf. Luke 22:14-20). If Christ were merely present along side bread and wine, he would have said "This contains my body. . . . This contains my blood," which he did not say. "
I know it may be difficult for those who do not believe the same as we do but the host is truly God's presence. Sometimes we will have Eucharistic adoration where the host is put into a special holder (monstrance) -- God is truly present in the host.
If you find yourself attending a Catholic mass, watch the priest during the Eucharist. You will see him kneel and/or bow -- he is regarding the host and the chalice of wine as God truly present, treating it with the same reverence as if God himself were standing there.
Catholics are expected to fulfill certain requirements before attending Communion. As mentioned, refraining from eating for an hour is one. It used to be (when Mass was on Sunday and not also Saturday) that to receive Communion you had to not eat from midnight until you after you had been to Mass.
For those who are interested, here's a source of more detailed information
Catholic Communion