Studies on the genetic basis of addiction indicate that the tendency t
o develop alcoholism is inherited. In addition, alcoholism appears to
be associated with a specific neurochemical disorder. Research has foc
used on the mesolimbic system, which is associated with the ability to
feel pleasure (i.e. hypothalamic control centres are related to daily
survival activities, and the medial forebrain bundle is involved in t
he positive reinforcement of addictive drugs). Current findings suppor
t the hypothesis that a neurochemical deficiency causes alcohol-depend
ent individuals to drink. Thus, pharmacotherapy may play an important
part in treating those who are not helped by psychosocial therapy alon
e. Future therapies may include agents that block, enhance, or normali
ze neurotransmitter function as well as genetically engineered agents
that could target a specific cause of alcoholism.