Health effects from teen dating problems
Neurons may begin to reduce the number of dopamine receptors or simply make less dopamine.The result is less dopamine signaling in the brain—like turning down the volume on the dopamine signal.Different drugs—because of their chemical structures—work differently.We know there are at least two ways drugs work in the brain: Some drugs, like marijuana and heroin, have chemical structures that mimic that of a neurotransmitter that naturally occurs in our bodies.Normally, the reward circuit responds to feelings of pleasure by releasing the neurotransmitter dopamine. Drugs take control of this system, causing large amounts of dopamine to flood the system.This flood of dopamine is what causes the “high” or intense excitement and happiness (sometimes called euphoria) linked with drug use.Addiction is a chronic brain disease that causes a person to compulsively seek out drugs, despite the harm they cause.The first time a person uses drugs, it’s usually a free choice they’ve made.
Although we know what happens to the brain when someone becomes addicted, we can’t predict how many times a person must use a drug before becoming addicted.
The brain is always working, even when you are sleeping. The brain is made up of many parts that all work together as a team.
Each of these different parts has a specific and important job to do.
Drugs affect three primary areas of the brain: The brain is a complex communications network of billions of neurons, or nerve cells.
Networks of neurons pass messages back and forth thousands of times a minute within the brain, spinal column, and nerves.