I suppose on the plus side, when I was at college in the UK we used to drink loads of obviously watered down lager. It didn't taste very nice and was from plastic pint glasses.
It certainly saved me from many a severe hangover, or alcohol poisoning.
I was very surprised when I visited Dublin pubs and realised I was getting drunk after about 2 pints instead of 4-6 pints. The spirits had alcohol in them as well, which I found quite surprising