Although, of course, everybody is different in degree, as a general rule once alcohol is absorbed into the bloodstream and reached the brain, it has relatively predictable effects on us all.

Alcohol and the Central Nervous System:  The fact that alcohol decreases inhibitions, many people believe alcohol is a stimulant.  This is not true.  Alcohol is a depressant which deadens nerve endings, impacts judgment, and in large enough quantities can result in coma and death. 

Alcohol and Reaction Time and Coordination:  As blood alcohol concentration increases, reaction time increases and muscular coordination decreases. 

Alcohol and Vision:  Glare recovery can be delayed, and perception of moving objects and peripheral vision can deteriorate as blood alcohol concentration increases. 

Alcohol and Skin:   Although absorption of alcohol through the skin is negligible, alcohol causes the “flushed face” of the habitual drinker. 

Alcohol and the Kidneys:  Alcohol is a diuretic, and moderate use of alcohol is not believed to cause harm to the kidneys.

Alcohol and the Liver:  Consumption of alcohol causes the accumulation of fat in the liver.  Moderate use of alcohol is not believed to cause harm to the liver as long as the person eats a healthy diet.