Alcohol’s effect on your brain

I have memory lapses from my first few weeks of being sober. So, it’s not hard to imagine that drinking took a toll on my brain. I haven’t had a drink in 20 years … I like to think that I stopped before I did too much damage. But, I can’t be sure.

Yes, I know about the reported health benefits of certain types of alcohol. I am not against drinking. I am just against alcoholics like me drinking.  Alcohol equals fun and celebration for most, but for me it acted like a poison. Large quantities of booze can affect the mind. If you are not an alcoholic, some basic information will help you decide how much is appropriate for you. If you do have a drinking problem, then you mostly likely know that you can’t have any alcohol (at least without suffering consequences).

Alcoholism - how it works
The “how stuff works” website has a good article with additional information

This information was gathered from the The National Institute on Alcohol Abuse and Alcoholism (also called the NIAAA). The exact content was a bit too scientific for my preference, so I present the information in a way that made more sense to me.

By the way ….the National Institute on Alcohol Abuse and Alcoholism (NIAAA), supports about 90 percent of the Nation’s research on alcohol use and its effects. The goal of this research is to better understand the causes and consequences of alcohol abuse and addiction, and to find new ways to prevent and treat alcohol problems.

Discovering the Brain Changes

There still is much we do not understand about how the brain works and how alcohol effects it. Researchers are constantly discovering more about how alcohol interrupts communication pathways in the brain.  It changes brain structure, and has effects on behavior and functioning. A variety of research methods are used:

  • Brain Imaging – tools like an MRI are useful to track changes in the alcoholic brain. For example, they can show how an alcoholic brain changes immediately after drinking stops, and again after a long period of sobriety, to check for possible relapses.
  • Psychological Tests – Researchers also use psychological tests to evaluate how alcohol-related brain changes affect mental functioning. These tests demonstrate how alcohol effects emotions and personality, as well as how it compromises learning and memory skills.
  • Animal Studies – Testing the effect of alcohol on animals’ brains helps researchers better understand how alcohol injures the human brain, and how abstinence can reverse this damage.

Defining the Brain Changes

Using brain imaging and psychological tests, researchers have identified the regions of the brain most vulnerable to alcohol’s effects. These include:

CEREBELLUM – This area controls motor coordination.
LIMBIC SYSTEM – This complex brain system monitors a variety of tasks including memory and emotion.
CEREBRAL CORTEX – Our abilities to think, plan, behave intelligently, and interact socially stem from this brain region.

Alcohol shrinks and disturbs brain tissue

Heavy alcohol consumption—even on a single occasion—can throw the delicate balance of neurotransmitters off-course. Alcohol can cause your neurotransmitters to relay information too slowly, so you feel extremely drowsy. Alcohol-related disruptions to the neurotransmitter balance also can trigger mood and behavioral changes, including depression, agitation, memory loss, and even seizures.

Long-term, heavy drinking causes alterations in the neurons, such as reductions in the size of brain cells. As a result of these and other changes, brain mass shrinks and the brain’s inner cavity grows bigger. These changes may affect a wide range of abilities, including motor coordination; temperature regulation; sleep; mood; and various cognitive functions, including learning and memory.

One neurotransmitter particularly susceptible to even small amounts of alcohol is called glutamate. Among other things, glutamate affects memory. Researchers believe that alcohol interferes with glutamate action, and this may be what causes some people to temporarily “black out,” or forget much of what happened during a night of heavy drinking.

Alcohol also causes an increased release of serotonin, another neurotransmitter, which helps regulate emotional expression, and endorphins, which are natural substances that may spark feelings of relaxation and euphoria as intoxication sets in. Researchers now understand that the brain tries to compensate for these disruptions. Neurotransmitters adapt to create balance in the brain despite the presence of alcohol. But making these adaptations can have negative results, including building alcohol tolerance, developing alcohol dependence, and experiencing alcohol withdrawal symptoms.

What factors make a difference?

Different people react differently to alcohol. That is because a variety of factors can influence your brain’s response to alcohol. These factors include:

  • How much you drink and how often.
  • Your genetic background and family history
  • Your physical health.

Can brain problems be reversed?

Staying away from alcohol over several months to a year may allow structural brain changes to partially correct. Abstinence also can help reverse negative effects on thinking skills, including problem-solving, memory, and attention. (I can give personal testament to this)

How Alcohol Travels Through the Body

 From Visually.

Professionals in the alcohol treatment field offer advice on what to consider when choosing a treatment program.
Overall, gather as much information as you can about the program or provider before making a decision on treatment. If you know someone who has first-hand knowledge of the program, it may help to ask about his or her personal experience.

Addiction Alcoholism Help
These articles are written for fun and for free. If you need help finding a treatment solution, check out our main site.

17 thoughts on “Alcohol’s effect on your brain

    1. I liked this article and the central ethos of this site. I am a recovering alcoholic and also a trained counsellor and psychotherapist in Edinburgh, Scotland. Some of my work and research are based around counselling clients with addiction. I look forward to following this site as a tool to widen my thinking and understanding of this trait within my counselling work.



  1. I always felt extremely anxious after drinking. I would dry heave for a day or two. I was told that while I was drinking a wall would go up blocking the endorphin in my brain from getting through. As the alcohol left my body I would be flooded with the blocked endorphin causing anxiety. It sounded right to me. My brain scans are not pretty but I was drinking when I didn’t know I had Celiac Disease. I drank mostly alcohol that contained Gluten. It didn’t help and some of my memory problems can’t be fixed.

    Liked by 2 people

  2. I would like to add that after my testing was completed, the questions, quizzes, memory games, brain scan, physical, etc, the Dr. came in to tell me the outcome. He looked at me and just said ” You have the brain of an alcoholic 82 year old man. Oh and your liver is enlarged”. That was it. The end. No remedy or advice. I remember laughing at the time because it was so absurd. I’m not laughing now. He should have done a better job and I should’ve asked questions and demanded answers. But I wasn’t ready. If you’re not ready to get sober you’re not going to HEAR what the people around you are saying.


  3. This is just the comment I needed to read this morning. My uncle has a huge drinking problem. He has lost his 30 year marriage and children. He is homeless and has come from France to England to stay with my Mom. She is a bit of a soft touch. Our family tried to stage an intervention a week ago. I knew he would find a way to sneak in alcohol My Mum couldn’t be a police to him 24/7. I told her her it was very suspicious that a man who started drinking from 8 a.m. in the morning until he passed out, cannot possibly have no withdrawal symptoms by saying he has stopped. My mom had to go snooping and of course she found alcohol stashed everywhere. Before we had the family intervention. I told the family that his rock bottom and unfortunately that rock bottom is making him homeless. The family were against the decision saying we could get him help. How can you help someone who is in heavy denial? I was ringing around for shelters or places that would take him in. I ended up getting a number from someone who was in holiday in Tenerife. He told me my French raging alcoholic of an uncle had more chance of passing off as a refugee to get help and support. It has been so stressful as a family. I have addiction problems. too but I can some how control my drinking these days as I was never a huge drinker. I used other drugs as my preferred choice. Obviously I shouldn’t be drinking at all with an addictive nature but a lot has happened for me toghet to the point where I can have 3-4 cocktails every couple of months and go home and stop. It is scary to see what alcohol dos to the brain. I have mental health issues and even drinking every 2-3 months has a massive impact. I can go on and on. Instead I am going to share your post. It is so important and necessary for people to understand that just because alcohol is legal,it doesn’t mean that it can’t kill you or damage you mentally.

    Liked by 1 person

    1. I am honored that you will share my post. I hope it’s just the thing that helps. You never know what someone’s “bottom” is going to be. I feel so bad for your mom. Living with a drinking alcoholic is very difficult. Don’t judge you own drinking too harshly. Just because you have the “genes” doesn’t mean you have to follow the same alcoholic path.

      Liked by 1 person

      1. I am looking forward to having a few cocktails on xmas eve but I can’t drink a lot of alcohol these days. My Uncle is going back to France on the 04/01 and will be homeless. His problem not ours. We have tried to help but he is won’t accept his reality so tough love is needed.

        Liked by 1 person

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