The more you drink, the smaller your brain becomes. And degeneration begins with just one drink

Going from one to two alcoholic drinks a day is associated with changes in the brain, in terms of volume and cognitive ability, which are equivalent to aging for two years. And going from two alcohol units to three is a bit like being three and a half years older.

It was known that there is a link between alcohol abuse and a smaller brain volume and consequently reduced cognitive abilities.