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Addiction

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“Addiction” by Nancy A. Piotrowski, Ph.D Addiction is when the human body becomes dependent on a substance. Prolonged use of any psychoactive drug will determine a persons dependency. The addiction can affect a person psychologically and physiologically; this will show in an addicts tolerance and withdrawal symptoms from a drug. Tolerance will involve the biological system such as the human body, changes in the body after a drug is present, and environmental or behavioral conditioning. The way the human body processes a drug is by absorbing a drug through the bloodstream. Once in the bloodstream it will be delivered to different organs and they will metabolize the drug and eliminate it from the body. After frequent use of a drug, the way the body processes a drug may change. When this occurs the body is able to rid itself of the drug more efficiently. This leads to reduced effects from the drug than when it was initially consumed. When this happens an increase to the dose will be required to get the desired effect. Many changes will occur in the body once a drug is present. It will change the sensitivity in specific areas of the body where the drug has an impact. For instance, there may be a direct or indirect impact on different areas of the brain. A direct impact may lead to a change in the brains receptors. When there is an indirect impact it will show in tissue tolerance and functional tolerance. Environmental and behavioral conditioning will also play a role in the development of a persons tolerance. When a drug is consumed repetitively in a particular physical or emotional environment, this is an example of being conditioned. So when exposed to an environment that a person was frequently in while using a drug will trigger repetitive behavior. Tolerance will also depend on the specific drug itself and how it was...

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