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The Causes and Effects of Drug Addiction

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Drug addiction is a serious threat to public health in the United States. According to the National Survey on Drug Use and Health, 21.6 million Americans over the age of 11 required professional treatment for substance abuse in 2011. Out of this number, 2.3 million — just over 10 percent — actually received treatment at a facility dedicated to treating addiction.

These are sad statistics, and often, reading figures like this tempts people to open up discussions about how addictions are diagnosed and treated in this country, and how they are sometimes ignored. But, it might also be valuable to discuss how addictions actually develop, and the impact that addictions have on both the addict and on that addict’s community. These cause-and-effect discussions might be dire, but they might provide just the kind of spur to action that some families need in order to address a problem unfolding in their midst.

How Addiction Develops

how an addiction developsTo understand the root causes of addiction, it’s important to understand how the use of illicit drugs affects the brain. The brain has a natural system for identifying and reinforcing positive experiences. When a person eats a delicious meal, spends intimate time with a loved one, or curls up in a warm blanket on a cold night, the brain rewards the behavior by releasing feel-good chemicals like dopamine. Repeating these experiences reinforces the behavior by teaching the brain to expect those pleasant sensations.

Addictive drugs interfere with the brain’s natural reward circuitry by stimulating the release of dopamine. Drugs like heroin, oxycodone or cocaine trigger the production of the same chemicals that reward positive, healthy activities like eating or exercising. Research from Harvard University shows that repeated use of addictive drugs creates powerful memories of pleasure. The persistence of these

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