Does excessive alcohol lead to brain damage?

Yes. To a degree and over time, excessive alcohol can cause long term central nervous system damage. A condition called wernike's can develop. Many other things happen as well that affect the brain.
Yes. It is toxic to the brain as alcohol can cause dementia and other neurological damage. All organs are affected in one or another.

Related Questions

Alcohol intoxication lead to brain damage?

Yes. Damage can occur in two ways. The first is acute alcohol poisoning, which can cause brain damage and even death. Long term alcoholism has been know to damage the brain over an extended time. Chronic alcoholism will also damage the liver, which will also have a damaging effect on the brain. Read more...