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What brain changes can someone experience after using drugs?
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Development. Dependency can be influenced by genetic and environmental factors. Even though drug abuse can happen at any age it can lead to addiction. Addiction is more likely to develop when drugs are first started. This is particularly true for teenagers. Teenagers could be especially prone, like attempting to do drugs, because parts of their brains which regulate decision making, judgement, self-control, and decision-making are still growing.
Dopamine is a neurotransmitter that affects the reward circuit in the brain. Dopamine spikes in the reward circuit can reinforce bad activities, but they are also fun. This causes people to do the same thing repeatedly.
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The brain adapts to the additional dopamine over time. This decreases the feeling of high one experienced when they first started taking the medication. This phenomenon is called tolerance. To achieve the same amount of dopamine, they may consume more medication.
Biology. A person's chances of becoming addicted to drugs and alcohol are almost half the responsibility for their genes. Addiction and drug use can be increased by being a woman, a person's race, gender, and having other mental issues.
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In most cases, drugs function by increasing the amount of dopamine released into the brain's reward system. When dopamine is released as a result of rewarding behaviour, it is reinforced and can lead to hazardous, but gratifying, behaviours. So, as a result, people are more likely to repeat similar actions.
The effects of long-term drug use can also cause changes in other brain chemical processes or circuits. They may impair your ability and judgement to make good decisions, memory, learning, and ability. These brain alterations may make it more difficult to resist the urge to use drugs in ways not within your control.
Biology. The genes passed down from parents make up about half of an individual's risk for addiction. The likelihood of drug abuse is also affected by gender, ethnicity and other mental health issues.