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I found this little snippet in the following site:
http://ehealthforum.com/
People are often baffled by the powerful nature of addiction and many, including many Health professionals, are confused and often badly informed about one of the major ingredients of addiction; namely , the changes that take place in the persons chemical system. The following is only one of the ingredients that make up the recipe of addiction but certainly a powerful factor.
Neurotransmitters: the science of addiction
Doctors have identified the neurotransmitter “dopamine” as a naturally occurring brain chemical that is linked to emotion and motivation. During drug use, dopamine can be over-produced or may not be metabolized in a normal way, and creates an intense sense of euphoria or pleasure. Over time, the brain itself reacts to these higher than normal levels of dopamine in the brain. The brain may respond by either producing less dopamine itself, or by reducing the ability to receive as much dopamine. The result? A person has to use more and more of the drug in order to feel ‘normal’ or in order to get the previous high. |
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What is drug addiction?
A person addicted to a substance – any substance – experiences a strong psychological urge to consume a drug, chemical or mind – altering substance. |
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