[Margaret Pilkington]

The behaviour you talk of on a Friday and Saturday night has nothing to do with milk consumption, and I reckon, not much to do with IQ either(since the Oxbridge towns have just as much of a problem as anywhere else)....except that the alcohol abuse will result in the death of millions of brain cells of those who have over-indulged.
The behaviour to which you refer, is related to the availability and cheapness of alcohol, and of course society's acceptance of such behaviour.
Nothing at all to do with milk.