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  • Some individuals are very sensitive to the effects of alcohol, while many people are much more tolerant to its effects.
  • A large percentage of alcoholics have some loss of mental function, reduced brain size, and changes in the function of brain cells.
  • Studies by the National Institute on Alcohol Abuse and Alcoholism (NIAAA) have reported that alcoholics have difficulty sleeping and spend less time in the most important phase of sleep known as REM (rapid eye movement).
  • A recent government conducted medical study indicates that people with a variant of the DRD2 gene (a gene associated with dopamine function in the brain) may be more prone to receive pleasure from drinking; since this gen merely relates to the pleasure associated with drinking, this research cannot conclude that DRD2 causes alcohol dependence.

For more information, visit www.drug-rehabs.org.