The consumption of alcohol tampers with your body chemistry, causing you to act differently. The excessive use of alcohol can have damaging effects on your body--from liver failure to memory loss.
Blackouts
People who binge drink often experience blackouts. Although this is only temporary memory loss, it is an indicator of alcoholism.
Charges
When you consume alcohol, your body breaks it down into your bloodstream, causing cells to go from a positive to a negative charge. This then breaks down communication between your body and your brain, ultimately resulting in memory loss.(Alcohol and Memory Loss).
Oxygen
With alcohol in your blood, there is less room for oxygen. This lack of oxygen in your bloodstream going to your brain can cause memory loss. (Alcohol and Memory Loss).
Nervous System
Excessive use of alcohol also causes the disruption of the hippocampus in your nervous system. This breaks up communication between your brain and nervous system, inhibiting movements. (John Hopkins).
Cells
Cells rely on each other to transfer messages throughout your body, including messages to your brain. When there is a change in these cells it disrupts these messages, ultimately leading to memory loss.