How do drugs of abuse affect the brain?

Drug abuse affect the way brain receives and process information

Explanation:

Drug abuse can be defined as the use of drug in amounts or by methods which are harmful to the individual or others.

Drugs affects the way neurons send, receive, and process signals via neurotransmitters. Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter in the body. This allows the drugs to attach onto and activate the neurons. Although these drugs mimic the brain's own chemicals, they don't activate neurons in the same way as a natural neurotransmitter, and they lead to abnormal messages being sent through the network.

Drugs such as amphetamine or cocaine, can cause the neurons to release abnormally large amounts of natural neurotransmitters or prevent the normal recycling of these brain chemicals by interfering with transporters. This disrupts the normal communication between neurons.

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