What Happens if a Priest Cannot Drink the Wine at Mass?

A listener named Mike asks Father Dave about priests consuming the body and blood of Christ. "Father Dave said on the show [recently] that for a Mass to be valid, the priest has to consume both the body and blood of Christ — the bread and wine," Mike begins. "What happens if a Catholic priest is recovering from alcohol addiction or can't consume alcohol for medical reasons? Does he still have to consume the wine, or is there an exception in those circumstances?"