Theo Nash
Alcohol addiction, or Alcohol Use Disorder (AUD), is a spectrum disorder that can range from mild to severe. While the chances of becoming addicted to alcohol are influenced by various factors and differ for each individual, certain signs of alcohol dependence are common among those struggling with this disorder. Alcohol has a powerful effect on the brain, producing pleasurable feelings and reducing negative emotions. This can create a cycle of alcohol consumption, where individuals repeatedly seek the positive effects of alcohol while temporarily escaping negative feelings. Over time, increased tolerance can lead to heavier drinking, resulting in blackouts, relationship issues, and problems at work. As the body becomes physically dependent on alcohol, withdrawal symptoms such as shaking hands, nausea, and sweating may occur when attempting to reduce consumption.
| Characteristics | Values |
|---|---|
| Addiction development time | There is no set time to become addicted to alcohol. It varies from person to person. |
| Factors influencing addiction | Frequency of drinking, amount of alcohol consumed, genetics, individual circumstances, stress, anxiety, depression, tolerance, physical dependence, and withdrawal symptoms. |
| Treatment | Treatment facilities offer medically supervised detox, residential or outpatient treatment, psychological counseling, and support groups. |
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What You'll Learn
Genetics and family history
Alcohol dependence, or alcoholism, is a complex genetic disease. While genetics accounts for roughly 50% of the risk of developing an alcohol use disorder (AUD), it is essential to understand that having a family history of addiction does not guarantee that an individual will develop the disease. Environmental factors also play a significant role in the development of AUD.
Research has shown that specific genes associated with alcohol addiction can be inherited. For example, a recent study of over 1 million people by the National Institute on Drug Abuse identified several genes that are candidates for being inheritable addiction genes, including ADH1B, CHNR5, GCKR, and DRD2. These genes are involved in how the central nervous system responds to alcohol and how the body metabolizes it. However, it is important to note that not everyone will have the same response to alcohol, even if they have the same genes.
Adoption and twin studies further support the role of genetics in alcohol dependence. Adoption studies have shown that alcoholism in adoptees correlates more strongly with their biological parents than their adoptive parents. Twin studies in the US and Europe suggest that approximately 45-65% of the liability for alcohol dependence is due to genetic factors. Animal studies also demonstrate genetic liability, with mice and rats selectively bred for traits associated with alcohol dependence, such as alcohol preference and sensitivity.
Additionally, family-based analyses have identified several genes that contribute to the risk of alcohol dependence and key endophenotypes. For example, analyses of 117 families with a dense history of alcohol dependence found a significant association between theta ERO and several SNPs in KCNJ6, which influences neuronal networks and modulates opioid and ethanol-induced analgesia. However, it is important to note that these studies have primarily focused on families with multiple members affected by alcohol dependence, which may not represent the general population.
In conclusion, while genetics and family history play a significant role in the development of alcohol use disorders, they are not the sole determinants. Environmental factors and individual differences also contribute to an individual's risk of becoming addicted to alcohol. Understanding the complex interplay between genetic, environmental, and individual factors is crucial for preventing and treating alcohol use disorders effectively.
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Tolerance and physical dependence
Direct alcohol tolerance is also influenced by individual factors such as body size and the activity of alcohol dehydrogenases, a group of enzymes responsible for breaking down alcohol in the liver and bloodstream. People with higher body masses and higher levels of alcohol dehydrogenases generally have higher alcohol tolerance. Additionally, among alcoholics, carriers of the atypical alcohol dehydrogenase enzyme consume lower doses of ethanol compared to non-carriers.
Tolerance is not the same as physical dependence or addiction. Physical dependence occurs when an individual becomes reliant on alcohol, and stopping consumption leads to withdrawal symptoms as the body rebels against the absence of alcohol. Withdrawal symptoms can be physical, such as sleep disturbances, pain, and feelings of illness, or emotional, such as dysphoria, irritability, and anxiety. The negative emotional state associated with withdrawal, known as hyperkatifeia, may drive further alcohol consumption to find relief from these unpleasant feelings. This can create a cycle of increasing usage, leading to increased tolerance, dependence, and possibly addiction.
It is important to note that not everyone who develops tolerance will progress to physical dependence or addiction. However, the development of tolerance can be a warning sign and should be addressed early to prevent the progression to more severe stages of alcohol use disorder. Treatment facilities offer medically supervised detox and therapy to help individuals uncover the root causes of their alcohol use and develop healthy coping mechanisms.
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Withdrawal symptoms
Mild symptoms include headache, mild anxiety, insomnia, upset stomach, nervousness, excessive sweating, heart palpitations, increased blood pressure, and increased heart rate. These symptoms typically peak within 24 to 72 hours and begin to resolve within this timeframe.
Moderate symptoms include hallucinations, which can occur within 24 hours of the last drink. The risk of seizures is highest 24 to 48 hours after the last drink.
The most severe form of alcohol withdrawal is delirium tremens, which can be life-threatening. Symptoms of delirium tremens include high body temperature, shakiness of the hands or other body parts, and hallucinations.
Other emotional withdrawal symptoms include dysphoria, irritability, anxiety, and emotional pain. These negative feelings are thought to stem from a diminished activation in the reward systems of the basal ganglia, making it difficult for people to experience pleasure from everyday life, as well as increased activation of the brain's stress systems in the extended amygdala, contributing to anxiety and unease.
It is important to note that withdrawal symptoms can last for months, and some people may experience sleep changes, rapid mood changes, and fatigue during this extended period.
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Brain function and compromise
Alcohol has a powerful effect on the brain, producing pleasurable feelings and muting negative ones. This is because alcohol causes the brain to release endorphins, or "pleasure hormones", which bind to opiate receptors in the brain. It also increases the release of dopamine, a chemical linked to pleasure. However, excessive drinking is linked to an increased risk of dementia and other forms of brain damage.
Alcohol interferes with the brain's communication pathways and can affect the way the brain looks and works. It makes it harder for the brain areas controlling balance, memory, speech, and judgment to do their jobs, resulting in a higher likelihood of injuries and other negative outcomes. The parietal lobe, which processes sensory information, is affected, leading to a loss of fine motor skills and slower reaction times. The cerebellum, which helps with coordination, is also impacted, and blackouts or temporary loss of consciousness or short-term memory can occur due to the hippocampus not working well.
Long-term heavy drinking causes alterations in the neurons, such as reductions in their size. It can also lead to Wernicke-Korsakoff syndrome (WKS), which is marked by amnesia, extreme confusion, and eyesight issues. WKS is caused by a thiamine deficiency or lack of vitamin B-1. Alcohol misuse during adolescence can also alter brain development, potentially resulting in long-lasting changes in brain structure and function.
An alcohol overdose occurs when there is so much alcohol in the bloodstream that areas of the brain controlling basic life-support functions begin to shut down. This can lead to permanent brain damage or death. As individuals continue to drink alcohol over time, progressive changes can occur in the structure and function of their brains, compromising brain function and driving the transition from controlled, occasional use to chronic misuse, which can be difficult to control.
The prefrontal cortex, an area of the brain responsible for executive function, is compromised in people experiencing alcohol addiction. This includes the ability to organize thoughts and activities, prioritize tasks, manage time, and make decisions. Changes in the basal ganglia can also lead to habit formation, contributing to compulsive alcohol use. When a person who is addicted to alcohol stops drinking, they experience withdrawal symptoms, which can be physical (sleep disturbances, pain, nausea, feelings of illness) and emotional (dysphoria, irritability, anxiety, and emotional pain).
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Treatment and recovery
Behavioural treatment is a common approach, focusing on counselling to change drinking behaviour. This may involve working with addiction counsellors or psychologists to develop skills to avoid and overcome triggers, such as stress. Support groups are another aspect of behavioural treatment, providing connection and understanding with others going through similar experiences.
Medication is also used to treat alcohol addiction. The U.S. Food & Drug Administration has approved naltrexone and acamprosate for this purpose, while topiramate and gabapentin can reduce cravings. Doctors can prescribe medications to address withdrawal symptoms, making the process safer and less distressing.
Relapse is a common challenge in recovery from alcohol addiction. It is important to view a return to drinking as a temporary setback rather than a failure. Tools such as e-health apps can help prevent a return to drinking, and ongoing check-ins with healthcare providers are beneficial. Support from loved ones is also crucial, and resources are available for family members to understand their role in the recovery process.
Overall, treatment and recovery from alcohol addiction require persistence and a willingness to seek help. It is an ongoing process that may involve setbacks, but most people with alcohol use disorder can benefit from treatment and many substantially reduce their drinking or achieve abstinence.
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Frequently asked questions
Alcohol addiction, also known as Alcohol Use Disorder (AUD), is a spectrum disorder that can range from mild to severe. It is characterised by a physical and psychological dependence on alcohol, resulting in negative consequences on an individual's health, relationships, and work life.
Alcohol addiction typically develops in stages. It often begins with drinking to relax or achieve a "buzz". This leads to increased tolerance, which may result in heavier drinking. As the individual continues to drink heavily, they may experience blackouts, withdrawal from social relationships, and troubles with work or school. At this stage, drinking becomes a form of self-medication to cope with the negative consequences of alcohol abuse. Eventually, physical dependence develops, and the individual experiences withdrawal symptoms when they try to quit.
Some common signs of alcohol addiction include increased tolerance, where more alcohol is needed to achieve the desired effect, and withdrawal symptoms such as nausea, shaking hands, sweating, sleep disturbances, pain, dysphoria, irritability, and anxiety when attempting to quit. Additionally, look out for behavioural signs such as preoccupation with alcohol, compromised executive function, and prioritising alcohol consumption over other activities.
The chances of becoming addicted to alcohol vary from person to person and depend on various factors, including genetics, individual circumstances, and drinking patterns. Research suggests that genetics accounts for about 50% of the risk, but not everyone with a family history of addiction will develop the disorder. The more frequently an individual consumes alcohol and the higher the quantity consumed, the higher the risk of developing an addiction.
Recognising and overcoming alcohol addiction can be challenging, but it is achievable. Treatment options include medically supervised detox, residential or outpatient treatment, psychological counselling, and comprehensive treatment programs that address both the medical and psychological aspects of addiction. These programs can help individuals develop healthy coping mechanisms to manage stress, emotions, and any underlying mental health issues contributing to their substance use.
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