The brain of someone who is dependent on alcohol and other drugs works differently from that of someone who doesn’t rely on substances. This video provides a good illustration of how addiction affects the brain’s neural functioning.
A key part of the way drugs work on the brain is that they target the “neurotransmitters” – the chemicals that allow the brain cells to talk to each other. Dopamine, which is the “pleasure” chemical, is particularly affected. The trouble with addiction is that the more regularly you use the drug, the more of the drug you will need to gain the pleasurable feeling that you got when you first used.
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