Let me guess, it's okay for people to drink alcohol though, because it's legal and doesn't hurt anyone. This is taken from MADD at the site listed below, gee, sounds familiar...

Alcohol can...
Impair motor coordination (the ability to walk or drive)
Impair memory (produces blackouts)
Impair judgment and decision making (people often think they are “OK” to drive when they are not)
Impair impulse control (increase the odds that you’ll do things you might regret later)
Cause death (by directly affecting the pons and medulla part of the brain which controls vital reflexes like breathing, heart rate, gagging, etc. - alcohol can shut down these reflexes, directly causing death)

There are specific parts of the brain that are affected by alcohol. The frontal lobe, the hippocampus, the pons and medulla and the cerebellum all suffer when alcohol is consumed. The frontal lobe plays an important part in planning, decision making, impulse control, memory and many other activities. The hippocampus is important in memory formation, particularly for new facts and events. Alcohol impairs memory in part by disrupting brain function here. The pons and medulla contain groups of cells that control vital reflexes - like breathing, heart rate, gagging, etc. Alcohol can shut down these reflexes, causing death. Alcohol also disrupts activity in the cerebellum which plays an important part in balance and motor coordination.

MADD - Alcohol's Effects on the Brain