Depends on the gradual process of alcohol, which may take several years of active for decades, there was a problem of the person, can be very vulnerable to abuse in the coming months. Finally, you can change the balance in the brain chemical GABA (gamma-amino-butyric acid) controls, impulsivity, and acids, stimulates the nervous system during the regular consumption of alcohol. The release of dopamine in the brain when we drink alcohol, dopamine levels more enjoyable experience. Long and medium term alcohol abuse significantly alter the level of chemicals in the brain, and why your body needs to feel good and alcohol should avoid animosity.