Drug Dependence And Addiction : Drugs

1231 Words Oct 15th, 2015 5 Pages
It is an obvious assumption that drugs have an effect on the mind, but what exactly goes on and how do these substances affect your brain and change your state of consciousness? This is the question that interested me and brought me to want to write about this certain topic. Drugs alter the way people think, feel, and behave by disrupting neurotransmission, the process of communication between brain cells. Over the past few decades, studies have established that drug dependence and addiction are features of an organic brain disease caused by drugs ' overall impacts on neurotransmission. For example, the neurotransmitter dopamine, which controls the pleasure and reward, movement, attention, and memory functions of the brain, are affected by drugs such as Cocaine, Methamphetamine, and Amphetamine. Virtually all drugs of abuse directly or indirectly increase dopamine in the reward pathway. A person 's experiences when abusing a drug reflect the functional roles of the particular neurotransmitter whose activity it disrupts. Scientists continue to build on this basic understanding with experiments to further explain the physiological bases for drug abuse vulnerability as well as the full dimensions and progression of the disease. The findings provide strong leads to new medications and behavioral treatments.

Drugs of abuse, such as methamphetamine and heroine, affect the brain much more dramatically than natural rewards, such as food and social interactions. To bring…

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