When a person gets addicted to a drug, it changes the way the nervous system works and may change the person’s thoughts, emotions and behaviors and how they respond to everyday life. What happens to the nervous system when people develop drug addictions? To answer this question first, you have to understand that drugs alter the way that the brain processes information, affect the activity of nerves and disrupt the body. These changes can over time cause physical dependence, mental health issues, cognitive problems, and harm to several organs.
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Drug addiction causes a change in the functioning of the brain and nerves, affecting the nervous system. The more a substance is used, the more that it affects neurotransmitters such as dopamine, serotonin, and GABA, which leads to mood changes, memory loss, poor judgment and physical changes.
Addiction can also, over time, cause injury to the central and peripheral nervous systems which can, for example, result in an increased risk of seizures, nerve pain, stroke, loss of cognitive function, and mental illnesses. Treatments shouldn’t be delayed, and prompt treatment can help ensure complete recovery and restoration of normal brain function.
Key Takeaways
- The problem with drug addiction is that it affects the system by hampering the brain’s natural communications.
- Use of drugs disrupts the reward system in the brain and decision-making.
- Addiction impacts various body systems, including the respiratory, cardiovascular, digestive and immune systems.
- Having a mental health condition often goes hand in hand with substance abuse.
- Treatment by professionals will result in the brain and nervous system reverting to its former glory with time.
- It helps decrease the chances for future permanent neurologic problems with early intervention.
How do drugs affect the brain?
All thoughts, feelings, movements, and decisions: the brain. Drugs mess with this control by adding enough chemicals to the brain that imitate or block the natural chemicals.
There are several addictive drugs that release a large amount of dopamine. Dopamine is a substance naturally responsible for the regulation of good behavior, and repeated activity in the pathway due to drug use can disrupt normal function. Eventually, the brain no longer produces as much dopamine, and, without its presence, it is difficult to find pleasure.
If you are a drug addict for the long term, it can affect:
- Memory
- Learning
- Judgment
- Decision-making
- Emotional regulation
- Impulse control
- Concentration
Due to the influence drug dependency has on the nervous system, the drug addict starts to experience a lack of feeling that there is a problem, and a recovery may only occur with the help of a professional.
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How do drugs affect the nervous system?
There are two parts of the nervous system: The central nervous system (brain and spinal cord) and the peripheral nervous system throughout the body.
Drug addiction affects the nervous system; it disrupts the flow of electric currents that occur between the brain cells. Nearly all addictive drugs disrupt communication, and although each one affects a different transmitter, they all affect normal communication.
The most common symptoms involving the nervous system are:
- Slower reaction times
- Numbness or tingling
- Muscle weakness
- Tremors
- Poor coordination
- Seizures
- Chronic headaches
- Memory problems
- Confusion
Certain medications cause an excess of nerve activity and other drugs discourage or slow down nerve activity. Excessive exposures can cause lasting changes to the functioning of nerves.
Chronic drug abuse can lead to neurological disorders both in the central and peripheral nervous systems, reports the American Addiction Centers.
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How do drugs affect the respiratory system?
Breathing of many substances causes interference.
Opioids, heroin, fentanyl, and prescription pain meds decrease the breathing center of the brain, which results in less oxygen supply to the body.
Respiratory complications include:
- Slow breathing
- Sleep apnea
- Pneumonia
- Lung infections
- Respiratory failure
- Overdose-related oxygen deprivation
This may also be because drugs such as stimulants (cocaine and meth) increase the likelihood of breathing issues due to increased body temperature and blood vessel damage.
Additionally, if the nervous system is affected by drug addiction, breathing control can also be damaged since the brainstem governs automatic breathing.
How does addiction affect the body?
Addiction starts in the brain but it has a devastating impact on nearly every organ.
There could be physical consequences such as:
- Heart disease
- Stroke
- Kidney damage
- Digestive disorders
- Hormonal imbalance
- Nutritional deficiencies
- Weakened immune system
- Chronic infections
This drug addiction affects the nervous system, therefore slowing many of the other systems of the body since these systems are controlled by nerves.
Recovery is physical and/or psychological healing.
Drugs affect the liver
Toxic substances are filtered out of the blood by the liver.
If an individual continues to use drugs, the liver has to work overtime, which can make him or her at risk of:
- Fatty liver disease
- Hepatitis
- Liver inflammation
- Liver failure
- Cirrhosis
Alcohol can also be highly damaging to the liver, as can be the case when combined with other substances.
Part of the process of addiction recovery is all about maintaining a healthy liver, and medical monitoring, nutrition, and continued treatment are all very important.
How do drugs affect your health?
Drug addiction doesn’t typically impact just one aspect of health.
The longer a substance is used, the higher the risk of:
Physical health
- High blood pressure
- Heart attack
- Stroke
- Seizures
- Chronic pain
- Poor sleep
- Malnutrition
Mental health
- Anxiety
- Depression
- Panic attacks
- Psychosis
- Mood swings
- Memory loss
Emotional health
- Shame
- Isolation
- Low self-esteem
- Emotional instability
As drug addiction becomes entrenched in the nervous system over time, communication between different areas of the brain becomes altered, and emotional regulation is made increasingly difficult.
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How does drug addiction affect families?
Addiction doesn’t just affect the person suffering; it affects all members of the family.
Common reactions of loved ones are:
- Stress
- Anxiety
- Financial hardship
- Broken trust
- Emotional exhaustion
- Caregiver burnout
Parents’ substance abuse can cause developmental problems, emotional difficulties, and the risk for children to abuse drugs and alcohol.
Family therapy can be helpful during recovery to restore healthy relationships and help resolve communication issues.
How does drug addiction affect relationships?
Relationships are based on honesty, trust, and communication.
The use of drugs often leads to:
- Frequent arguments
- Isolation
- Dishonesty
- Financial conflict
- Emotional distance
- Domestic violence
- Parenting difficulties
Drug addiction affects the nervous system, making it more difficult for the person to maintain normal and healthy communication levels and control impulses and emotions.
Recovery may involve couples counseling, counseling for families and relapse prevention education.
How does substance use affect mental health?
Mental health conditions and addictions often go hand in hand with each other.
Individuals with any of these anxiety disorders, depression, PTSD, bipolar disorder, or trauma may resort to any substance to help relieve their symptoms on a short-term basis.
However, these may improve over time, although in some cases, unfortunately,
Substance use may make these worse.
Drug addiction can lead to:
- Depression
- Anxiety disorders
- Panic attacks
- Suicidal thoughts
- Hallucinations
- Psychosis
- Cognitive decline
Treating addiction with a combined treatment that also treats mental health issues offers a better long-term prognosis.
Seeking help from DeLand Treatment Solutions provides essential guidance
How do drugs affect people?
Everyone has a different response, and this is dependent upon:
- Age
- Genetics
- Physical health
- Mental health
- Drug type
- Frequency of use
- Length of addiction
With long-term drug addiction, however, in nearly all instances the nervous system is altered, brain chemistry is changed, and the normal communication between nerves is disrupted.
If left untreated, problems with addiction can worsen over time.
Many individuals find that the evidence-based practices lead to a significant improvement in how their brain works, emotional well-being, and enjoyment of life.
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Addiction doesn’t have to be the way of life; you can overcome it no matter how long it has been in your life.
We at DeLand Treatment Solutions know drug addiction has effects on the nervous system, body, and all facets of life. Comprehensive treatment plans give you medical support, therapy, relapse prevention, and continued treatment planning, just for you.
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Frequently Asked Questions
How is the nervous system affected by drugs?
Drugs interfere with neurotransmitters that help nerve cells communicate. Long-term use may slow or overstimulate nerve activity, leading to memory loss, poor coordination, nerve damage, seizures, emotional instability, and cognitive impairment.
Does the brain ever fully recover from addiction?
Many people experience significant brain recovery after stopping substance use, especially with professional treatment. Recovery depends on the drug used, duration of addiction, overall health, and participation in ongoing therapy and healthy lifestyle changes.
What part of the brain is damaged by drugs?
Drugs commonly affect the prefrontal cortex, reward system, hippocampus, and amygdala. These areas control judgment, memory, emotions, motivation, impulse control, and decision-making, making addiction difficult to overcome without professional support.
Which organ is most affected by drugs?
Although the brain is usually the primary organ affected, drugs can also severely damage the liver, heart, lungs, kidneys, and immune system. The extent depends on the substance, dosage, and duration of use.
What does addiction do to the nervous system?
Addiction changes how nerve cells send and receive signals. Over time, it may cause impaired thinking, slowed reactions, tremors, numbness, seizures, chronic pain, and long-lasting neurological complications if left untreated.
What are the top 3 worst addictions?
Healthcare professionals often identify opioids, methamphetamine, and alcohol among the most severe addictions because of their high overdose risk, intense withdrawal symptoms, and significant impact on brain function and long-term health.
What is the mindset of an addict?
People living with addiction often experience intense cravings, impaired judgment, emotional distress, and compulsive behaviors. Addiction changes brain function, making substance use feel necessary despite harmful consequences. Recovery helps restore healthier thinking patterns.
What are 5 warning signs of addiction?
Five common warning signs include increased tolerance, withdrawal symptoms, loss of control over substance use, neglecting responsibilities, and continuing to use despite physical, emotional, financial, or relationship problems.
Disclaimer
This article is intended for educational and informational purposes only. It should not replace professional medical advice, diagnosis, or treatment. If you or someone you know is experiencing a substance use disorder or a medical emergency, seek immediate assistance from a qualified healthcare professional or emergency services.
References
- American Addiction Centers. How Drugs Affect the Central Nervous System. https://americanaddictioncenters.org/health-complications-addiction/central-nervous-system
- National Institute on Drug Abuse (NIDA). Drugs, Brains, and Behavior: The Science of Addiction. https://nida.nih.gov
- Substance Abuse and Mental Health Services Administration (SAMHSA). Substance Use Disorders. https://www.samhsa.gov
