Also, an adult that has had first Communion may continue to receive even after a mentally disabling tragedy. However, someone who is born with a mental disability might never be permitted to receive Communion because he hasn’t reached the age of reason. I really think that the rules of the West concerning receiving Communion should be changed to a specific age rather than leaving it to the priest to define “reasoning” skills.The logic of delaying communion until the age of reason I think of as similar to the logic of delaying baptism until the age of reason. If we have infant baptism, why not infant communion? If the Eucharist is truly a sacrament and not just symbolic, it helps get the infant off to a good start.
Regarding the worry of spilling the precious blood, that applies to adult communion as well.