Addiction Parts of the Brain
Addiction parts of the brain refer to the different areas in the brain that are altered and affected when someone has a substance use disorder. Alcohol and drugs alter how the brain functions and reinforce continuing to use the substance of choice. Learning more about these areas of the brain and how addiction affects them can provide encouragement and motivation for people to seek help and start their recovery journey to a brighter, substance-free future.
Parts of the Brain Involved in Addiction
Several different parts of the brain are involved in addiction. Each of these areas uses neurons, which are chemical messengers, to send messages to other areas of the brain and throughout the body. They work together to complete various tasks, process information, solve problems, and provide feedback about emotions and feelings.
The two main parts of the brain affected by addiction are the reward center and the stress center. In the reward center, the body naturally releases dopamine and serotonin, which are “feel good” neurons when we do something rewarding and enjoyable or exercise.
Cortisone is released by the stress center when we feel threatened or in danger to trigger the body’s “flight or fight” response. When alcohol and other substances are introduced into the body, they alter how neurons function and the release of dopamine, serotonin, and cortisone.
Many substances force the brain to increase the release of reward center neurons that flood the brain and result in pleasurable feelings and euphoria. When the effects of these substances begin to wear off, they trigger a release of cortisone, which is tied to experiencing negative withdrawal symptoms.
Because the body dislikes the negative symptoms, the reward system encourages continued substance use through cravings. Cravings are a powerful urge to keep taking the substance in order to avoid the negative withdrawal symptoms. As a result, the body becomes addicted to the substance of choice.
How Addiction Affects Brain Function
Substance use disorders affect addiction in parts of the brain responsible for different brain functions. The three primary regions of the brain that are impacted include:
Prefrontal Cortex:
This brain region helps people reason, think, solve problems, and plan. It also helps people avoid making impulsive decisions or engaging in risky behaviors. When substances are introduced to this brain region, it slows cognitive functioning. As a result, people are more likely to act impulsively and take risks they would normally not.
Basal Ganglia:
This brain region is associated with motivation, enjoyment, and pleasure. It is also responsible for helping people make healthy choices, like eating a balanced diet or exercising daily. When the basal ganglia is functioning normally, it will naturally release a small amount of dopamine or serotonin, improving our moods and making us feel good.
When substances are used, it forces the release of dopamine and serotonin at much higher levels. This causes a rush of pleasure and euphoria, which most people refer to as a “substance high.” The more the substance is used, the more this brain region associates substance use with pleasure.
Eventually, people can no longer feel any type of pleasure or enjoyment without using the substance because the natural stores of the neurons have been depleted. However, when they use the substance, it still forces the body to release the neurons.
Another aspect of addiction in this part of the brain is tolerance. The more a substance is used, the more the brain adjusts to it. As it does, the euphoric and pleasurable feelings are no longer experienced without increasing the amount of the substance used. Every time there is an increase, the euphoria will be short-lived until the body becomes even more tolerant of the substance, further reinforcing addiction.
Extended Amygdala:
This brain region is associated with stress, worry, and anxiety. It is related to addiction through the unpleasant withdrawal symptoms people experience when their substance of choice wears off. With continued substance use, the sensitivity of this brain region increases, resulting in even more intense and severe withdrawal symptoms.
Another aspect of the extended amygdala related to addiction is the development of co-occurring mental health disorders. Some people can develop depression, anxiety, or other mental health issues from prolonged substance use.
Recovery and the Brain
The brain is very resilient and can repair most damage caused by substance use disorders. The extent to which it is able to recover is influenced by:
- The age of the person
- Their overall health
- The type of substance that was used
- The amount taken
- The duration they took the substance
Once the substance has been removed from the body through medically supervised detox, the brain goes to work to return to pre-substance use functioning. It does this through a process called neuroplasticity, which allows the brain to build new brain cells and neural pathways to grow, modify, and restore functioning.
However, it takes time for addiction in parts of the brain to heal. Initially, it will work on restoring the natural stores of depleted neurons. This is why some people experience psychological withdrawal symptoms for several months or longer after detox. Once these levels are restored, the brain starts rebuilding and repairing damages in the prefrontal cortex.
To help improve healing and recovery not just for the brain but the body as well, some important holistic practices people can do are:
- Exercise daily
- Eat a well-balanced, healthy diet
- Get sufficient sleep
- Meditate and practice mindfulness
Contact Sanctuary Treatment Center for Help
When searching for help to overcome addiction, you can count on Sanctuary Treatment Center in Los Angeles. Our caring and supportive team provides comprehensive treatment services tailored to your specific needs and objectives. Contact us today to learn more about our personalized treatment options for healing and recovery from addiction in parts of the brain or to start the admissions process.
Published: 1/27/2025