Does the Vatican have a position on alcoholism and the tendency of some to have this disease? How does the availability of Communion wine increase this disease? Given to children? 

Did Jesus drink wine? He was perhaps a Nazorean sworn to not drink wine (Acts 24:5 footnote “Nazoreans,” and Mt 2:23). In Mk 14:25, “I will never again drink of the fruit of the vine,” the word “again” does imply some previous drinking of wine, but not necessarily in that setting which was the Last Supper (also Mt 26:29). Maybe Jesus took some wine before he became a follower of John the Baptist, who did not drink wine (Lk 1:15)

At the Last Supper Jesus offers a 'cup.' What was in it? By the way, Jews did not drink blood, so we know it was not actually blood. On the cross, Jesus was offered vinegar/wine which he maybe did not actually swallow -- texts not clear. Was this vinegar from grapes or some other fruit? Yes, wine would be a typical drink at Passover, but John has Jesus die before Passover

NRSV