"...Well ya see, Norm, it’s like this. A herd of buffalo can only move as fast as the slowest buffalo. And when the herd is hunted, it is the slowest and weakest ones at the back that are killed first. This natural selection is good for the herd as a whole, because the general speed and health of the whole group keeps improving by the regular killing of the weakest members. In much the same way, the human brain can only operate as fast as the slowest brain cells. Excessive intake of alcohol, as we know, kills brain cells. But naturally, it attacks the slowest and weakest brain cells first. In this way, regular consumption of beer eliminates the weaker brain cells, making the brain a faster and more efficient machine. That’s why you always feel smarter after a few beers...."
The biggest study done on this topic which was just released a few weeks ago concluded the exact opposite, that moderate to even heavy drinking increases intelligence.
The long-term study followed a large group of civil servants (30,000) in the UK. The study started in the 1960s and has added more drunkocrats over the years.
Long-term scientific studies are more apt to produce an accurate result than a short-term test-tube study.
The study found that those who had 3 to 5 drinks per day (moderate to heavy drinking that is) performed much better in their jobs and were promoted far more often than their non-drinking soberocrats. They also performed much better on the UK civil service testing standards.
It even seemed that the heavier the drinker, the more their performance improved.