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Unformatted text preview: Drugs have the potential to either imitate or stimulate chemicals in the brain that make people feel "happy". Our brains are set up to make sure that we will repeat life-sustaining activities by associating those activities with pleasure or reward. For example, when you were a child if you did something good you received praise and you would make sure to do that action again. Whenever this reward system is triggered, the brain observes that something good is happening that it needs to be remembered. It teaches us to do it again and again, without thinking about it. Because drugs stimulate the same system, people will learn to reuse drugs over and over again. After prolonged use the body becomes resistant to the usual effects. Because of this the user has to increase the amount being used to receive the same effect. Eventually they would get to the point to where they need the drug the amount being used to receive the same effect....
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- Spring '10