Is Alcohol Addictive?

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Why is Alcohol Addictive?

Alcohol (ethyl alcohol) is a simple chemical that can cause significant changes in the complex functions of the human brain and body. Because it causes these changes, alcohol is a highly addictive substance. 

Drinking alcohol causes certain chemicals (dopamine and endorphins) to be released in the brain. These chemicals produce pleasurable feelings and act as natural painkillers. The pleasurable sensations are why once people start drinking, they often want to carry on.

Alcohol can compromise impulse control and decision-making, which can lead to alcohol misuse and dependence.1 Many people also consume alcohol despite the negative consequences, increasing the risk for addiction. 

How Does the Body Become Dependent on Alcohol? 

During consistent use of an addictive substance, a person’s brain and body chemistry can change.

The pleasurable sensations caused by drug use can make the user crave the substance and feel that they need to use it regularly. This feeling of needing to consume a substance is called dependency, which can quickly develop into addiction.

Addiction is a disease that is characterized by compulsive substance use despite harmful consequences. A person who has an addiction has a compulsion to perform a behavior that they know is harmful. They also feel unable to stop themselves from performing it.

Over time, heavy drinking can make the body dependent on alcohol. If someone who is addicted to alcohol attempts to stop suddenly, they may experience uncomfortable and dangerous withdrawal symptoms, and can even go into shock and die.2


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How Does Alcoholism Affect the Brain?

Alcohol negatively impacts the brain areas that control balance, memory, speech, and judgment, resulting in a higher likelihood of injuries and other adverse outcomes.

Alcoholism also affects the brain’s “reward center” and produces pleasurable sensations (such as anxiety reduction) when consumed.

Long-term, heavy drinking causes alterations in brain neurons (such as reductions in size) and permanently damages brain processes and functions.

A developing brain is particularly vulnerable to the effects of alcohol. Misuse of alcohol during adolescence and early adulthood can alter the brain's development, resulting in long-lasting changes in brain structure and function.3

8 Reasons Why Alcohol is Very Addictive

Here are some of the main reasons why alcohol is highly addictive:

1. Physiological Changes

Alcohol causes the brain’s chemistry to change, which makes it addictive. 

Alcohol suppresses the central nervous system (CNS) and slows down brain function. When this happens, the brain increases the activity of neurotransmitters, which stimulate nerve activity and heighten arousal. 

As these changes occur, people tend to require increasingly more significant amounts of alcohol to become intoxicated. As a result, they often increase the amount they drink.

Over time, these changes to the brain create a vicious cycle of dependence that keeps the person hooked on alcohol.

2. Genetics 

Some people have a predisposition to alcoholism due to genetic factors. Specifically, some people’s brains release more pleasure chemicals in response to alcohol, making them more susceptible to physical dependency.

3. Social Pressure

Alcohol consumption is usually a social activity. People drink because their friends, coworkers, and family are drinking. 

Alcohol consumption is prevalent around the world. In 2019, 70% percent of U.S. adults 18 and older reported that they drank in the past year.4

In one study, a third of adult drinkers admitted drinking more than they intended because others encouraged them. Similarly, two-fifths of adult drinkers felt too much pressure to drink when socializing with work colleagues.5

4. Withdrawal Symptoms

Many people are addicted to alcohol because they don’t want to face the withdrawal symptoms of drinking cessation.

When an alcohol-addicted person suddenly stops drinking, they will likely begin to experience intense cravings for alcohol as well as many other distressing physical withdrawal symptoms, like:

  • Sweating
  • Anxiety
  • Tremors
  • An elevated heart rate
  • Insomnia

To avoid these symptoms, an alcohol-addicted person may begin drinking frequently or nonstop.

5. Alcohol-Positive Advertising

Alcohol manufacturers bombard the public with advertisements in video, digital, and print. They show drinking as a socially acceptable, fun, and relaxing pastime. 

From 1971 to 2011, alcohol advertising in the United States increased by more than 400%.

6. Availability of and Proximity to Alcohol

Alcohol is legal in the United States, and is therefore more accessible than other drugs. Alcohol can be found in homes and at family gatherings, barbecues, restaurants, nightclubs, movie theaters, and resorts, among others. 

7. Positive associations with alcohol

Alcohol is often linked to positive associations such as celebrations. It is often featured at events or used to celebrate (“toastings,” for example). Many people treat alcohol as a reward at the end of the day or after an achievement, which builds a positive association with alcohol.

8. Easing of mental health symptoms

There is a strong link between addiction and mental health disorders. People who have untreated depression, anxiety, or PTSD have a higher risk for alcoholism because they may self-medicate with the drug. Self-medicating with alcohol can make a person want to drink more and more, leading to alcohol addiction.

Who is More at Risk of Developing Alcohol Use Disorder (AUD)?

Although, there are different types of alcoholics, alcoholic personalities, and tolerances. The health effects are the same especially long term.

Certain factors like age, family history, genetics, and others, can make a person more at risk of developing alcohol use disorder (AUD). The presence of any of the below factors can make a person more at risk of developing alcohol addiction.

  • Drinking earlier One study found that among people ages 26 and older, those who began drinking before age 15 were more than five times as likely to report having AUD as those who waited until they were of legal age to begin drinking. 
  • Genetics — Heritability has an impact on approximately 60 percent of alcohol-addicted persons.
  • Socioeconomic factors — Individuals from affluent neighborhoods are more likely to drink than those living below poverty. 
  • Mental health conditions A wide range of psychiatric conditions (including depression, post-traumatic stress disorder, and bipolar disorder) are comorbid with AUD and are associated with an increased risk of AUD. People with a history of childhood trauma are also more vulnerable to AUD.
  • Family history of alcoholism — People who have a family history of alcoholism or grew up around an alcoholic family member are more likely to develop alcoholism later in life.6

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Is Binge Drinking Considered Heavy Alcohol Use? 

Binge drinking is a type of alcohol consumption in which a person's blood alcohol concentration (BAC) exceeds 0.08 percent. For men, this means drinking more than 5 drinks in two hours. For women, this means drinking more than 4 drinks in two hours.

Not everyone who binges drinks has an AUD, but they are at higher risk for developing one.

Symptoms of Alcohol Use Disorder (AUD)

In the United States, 18 million adults have an alcohol use disorder (AUD). 

You may have an AUD if you have experienced two or more of the following in the past year:

  • Drinking more or for longer than planned
  • Being unable to cut down or stop drinking
  • Spending excessive time drinking or recovering from drinking
  • Feeling a strong need to drink
  • Drinking or being sick from drinking that interfered with life or responsibilities
  • Drinking despite it causing relationship problems
  • Giving up or cutting back on activities in favor of drinking
  • Getting into dangerous situations while or after drinking 
  • Drinking even though it caused health problems
  • Developing a tolerance to alcohol's effects
  • Experiencing withdrawal symptoms 7

Treatment Options for Alcohol Misuse & Addiction

Alcohol addiction can lead to several devastating consequences. Nearly 90,000 people die each year due to alcohol-related causes. Alcohol is the third leading preventable cause of death in the U.S.

People who are physically dependent on alcohol will need the support of a healthcare professional to stop drinking.

Treatment options for alcohol misuse and addiction include inpatient care, outpatient care, or detox programs. The right treatment option depends on each person's background and individual needs.

If you are struggling with alcohol use and addiction, see your health care provider for an evaluation. Your doctor can provide medical advice, make a treatment plan, and refer you to addiction treatment facilities.

Updated on December 5, 2021
7 sources cited
  1. "What is Addiction?"
  2. "Alcohol Dependence, Withdrawal, and Relapse" U.S. National Library of Medicine
  3. "Alcohol and the Brain" National Institute on Alcohol Abuse and Alcoholism
  4. "Alcohol Facts and Statistics" National Institute on Alcohol Abuse and Alcoholism
  5. New research lifts lid on peer pressure culture around alcohol” Drinkaware
  6. ”Alcohol's damaging effects on the brain” National Institute on Alcohol Abuse and Alcoholism
  7. "Alcohol Use Disorder (AUD)" U.S. National Library of Medicine

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