Addiction is typically associated with a dependency on, different harmful substances or behaviours, such as the use of narcotics, alcohol or gambling., Outside of addiction, dopamine is released during, pleasurable experiences, such as getting food, watching a film or anything that brings you joy., Some substances, such as heroin, marijuana and nicotine, mimic the presence of a chemical messenger that activates nerve cells called neurons., When activated, neurons generate electrical signals, to tell the brain to release dopamine., The drugs can trigger the release of between two and ten times the amount of, dopamine that is naturally produced from normal pleasurable experiences, such as eating food., The point at which we become addicted is when, our brains adapt to the presence of this excess dopamine., When the excess of dopamine is missing, the body craves it., Addicted individuals will continue to use a substance or, engage in behaviours that bring the brain to its newly adapted dopamine levels..
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addiction
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