Alcohol continuously destroys brain cells, even if taken in small quantities. Chronic alcoholics almost always have the following things in common: a disinterested good nature, often with a childlike personality, and a simple trust, which can suddenly turn into aggression, crying or erratic behaviour without provocation. This is not only due to the acute alcohol intake, but is almost always a result of the destruction of brain cells which is irreversible. The destruction of large parts of the brain eventually leads to complete stupefaction. Pharmaceutical drug poisoning and chronic drug abuse have similar effects on brain activity.
What Alcohol Does to the Brain
Question, Sieglinde B., Garmisch: My doctor criticised me for allowing my 13 year old son to have a 'double' every now and again. He said alcohol consumed as a child leads to brain damage.
Answer: I can keep the answer short in this case. Your doctor is one hundred percent right. I think it is simply irresponsible of you, as a mother, to allow a 13 year old child to consume high amounts of alcohol.
Young people's brains are especially at risk, because the bloodbrainbarrier (which only closes at 17 or 18 years old) is still open. In addition, here is a figure which clarifies just how dangerous such alcohol intake is for children: A drunken stupor permanently destroys up to seven million brain cells in an adult. It is even more dangerous for a child because, as mentioned earlier, the bloodbrainbarrier is still open.
Translated from the German: "Gehirnkrankheiten"
Source: ‘Sprechstunde’, Dr. med. A. Sequeira