Theo Nash
Alcohol is one of the most commonly used substances in the United States, with 62.3% of people aged 12 or older reporting alcohol use in a 12-month period. While it may be prevalent, alcohol can have a toxic effect on many organs, including the brain, liver, oesophagus, and stomach. Even one or two drinks can impair balance, coordination, impulse control, memory, and decision-making, and increase the risk of injury. Over time, heavy drinking can lead to fatty liver, cirrhosis, and an increased risk of cancer. Alcohol can also impact the body's immune system, making it easier to get sick, and can affect fertility in both men and women. Chronic alcohol use can lead to physical dependence, and withdrawal symptoms can include anxiety, agitation, nausea, vomiting, insomnia, and seizures. If you or a loved one are concerned about alcohol misuse, it is important to seek help and support.
| Characteristics | Values |
|---|---|
| Effect on the liver | Alcohol is removed from the body by the liver. Excess alcohol can harm the liver and other organs. |
| Effect on the brain | Alcohol interferes with the brain's communication pathways and can affect the way the brain looks and works. These disruptions can change mood and behavior and make it harder to think clearly and move with coordination. |
| Effect on behavior | Alcohol reduces inhibitions and can lead to anti-social behavior, affecting relationships with family and friends. |
| Effect on nervous system | Alcohol impairs the cells in the nervous system, making you feel lightheaded and adversely affecting your reaction time and coordination. |
| Effect on heart | Alcohol increases the risk of stroke and can cause heart arrhythmias (irregular heartbeat). |
| Effect on cancer risk | Alcohol consumption is associated with an increased risk of several types of cancer, including breast cancer, liver cancer, esophageal cancer, and colorectal cancer. |
| Effect on bone health | Alcohol increases the risk of myopathy or muscle wasting and reduces bone density, increasing the odds of recurrent gout attacks. |
| Effect on pregnancy | Alcohol consumption during pregnancy can harm the fetus. |
| Effect on mental health | Alcohol consumption is associated with an increased risk of mental health issues, including substance abuse and suicide. |
| Alcohol dependence | Alcohol use disorder (alcoholism) is a condition where individuals cannot stop drinking, even when it negatively impacts their lives. It can be mild, moderate, or severe and is often treated with medication and behavioral therapy. |
| Alcohol poisoning | Consuming more than 12 units of alcohol can lead to alcohol poisoning, where alcohol interferes with the body's automatic functions. |
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What You'll Learn
Alcohol withdrawal symptoms
Mild to moderate alcohol withdrawal symptoms can include tremors (shakes), rapid pulse, increased blood pressure, rapid breathing, sweating, nausea, vomiting, anxiety, irritability, insomnia, and nightmares. These symptoms can often be treated in an outpatient setting, with medications such as carbamazepine or gabapentin, which can help reduce cravings and improve sleep and mood.
More serious symptoms can start to occur about 12-48 hours after the last drink. These can include hallucinations, which often start about 12-24 hours after stopping drinking, and seizures, which may happen within the first 48 hours. Delirium tremens (DTs) is a severe form of alcohol withdrawal that affects about 1-1.5% of people experiencing alcohol withdrawal. DTs typically begin two to three days after the last drink and peak in intensity around four to five days later. This condition causes dangerous shifts in breathing, circulation, and temperature control, and can lead to confusion, disorientation, stupor, loss of consciousness, aggressive behaviour, and soaking sweats. Treatment for severe alcohol withdrawal often requires hospitalisation, with continuous monitoring and management of symptoms using long-acting benzodiazepines.
It is important to seek medical help even if you are experiencing mild symptoms of alcohol withdrawal, as it is difficult to predict how much worse they could become. Total and lifelong avoidance of alcohol is the best treatment for those who have gone through alcohol withdrawal.
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Physical and mental health issues
Alcohol misuse can have a wide range of adverse effects on the body and mind. Alcohol is a toxin that affects almost every part of the body, including the brain, bones, liver, pancreas, lungs, cardiovascular system, and immune system. Even low amounts of alcohol consumption can carry health risks, and the less one drinks, the lower the risk of harm.
Excessive alcohol consumption can cause immediate and long-term health issues. Binge drinking (consuming a lot of alcohol in a short period) is particularly harmful and risky. For both men and women, the risk of dying from alcohol-related disease and injury remains below 1 in 100 if no more than 10 standard drinks are consumed each week and no more than 4 standard drinks are consumed on any one day. Binge drinking is defined as four or more drinks for women, or five or more drinks for men during an occasion, while heavy drinking is defined as eight or more drinks for women or 15 or more drinks for men during a week.
Alcohol use can lead to mental health issues, including an increased risk of suicide, and substance abuse—those with depression, anxiety, or a family history of alcohol dependence are more likely to become addicted. Alcohol can also cause behavioural changes, impairing judgement and decision-making, and reducing inhibitions, which can lead to antisocial behaviour. It can also cause memory problems, including dementia, and learning difficulties.
The physical health consequences of alcohol misuse are extensive. Alcohol can cause acute respiratory distress syndrome, bacterial pneumonia, and respiratory syncytial virus infection. It increases the risk of myopathy or muscle wasting, gout attacks, and fractures, and it impairs bone fracture repair and reduces bone density. Alcohol misuse can also lead to pancreatitis, which can affect the production of digestive enzymes and hormones that regulate blood sugar levels. It increases the risk of certain cancers, including oesophageal, liver, breast, colorectal, stomach, bowel, mouth, and throat cancer.
Excessive alcohol consumption can also cause alcohol poisoning, cerebellar degeneration, cirrhosis of the liver, and delirium tremens. It can lead to peripheral neuropathy, causing numbness in the arms and legs and painful burning in the feet. Alcohol can also cause heart arrhythmias, a drop in blood pressure, diarrhoea, and erectile dysfunction. It upsets digestion, leading to nausea, vomiting, and indigestion.
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Alcohol use disorder
The severity of AUD is determined by the number of criteria from the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) that a person meets. Mild AUD corresponds to two to three criteria, moderate to four to five, and severe to six or more. Treatment options for AUD include behavioural therapy, medication, and counselling. While some people with AUD may relapse, studies show that most are able to reduce their alcohol consumption or stop drinking entirely with treatment.
Alcohol misuse and AUD can lead to various health problems, including acute respiratory distress syndrome, bacterial pneumonia, and respiratory syncytial virus infection. Heavy alcohol use increases the risk of fractures and muscle wasting and impairs bone fracture repair and bone density. Alcohol misuse can also cause pancreatitis, a dangerous inflammation of the pancreas that affects the production of digestive enzymes and hormones regulating blood sugar levels. Additionally, alcohol misuse increases the risk of peripheral neuropathy, which can cause numbness in the arms and legs and painful burning in the feet. It can also lead to heart arrhythmias, postural hypotension, and erectile dysfunction.
Alcohol consumption is associated with an increased risk of several types of cancer, including oesophageal, liver, breast, colorectal, stomach, bowel, mouth, and throat cancer. Even low levels of alcohol intake can increase the risk of recurrent gout attacks. Alcohol misuse can also negatively impact mental health, increasing the risk of suicide and contributing to substance abuse and anxiety or depression. It can cause memory problems, including dementia, and learning difficulties, and it can affect relationships with family and friends.
Excessive alcohol use can be harmful not only to the drinker but also to those around them. Binge drinking, defined as four or more drinks for women or five or more for men in one occasion, and heavy drinking, defined as eight or more drinks for women or 15 or more for men in a week, can be particularly risky. Alcohol lowers inhibitions, leading to potential antisocial behaviour, violence, and crime. It can also cause accidents and injuries, with more than 10% of emergency department visits linked to alcohol-related illnesses. Alcohol impairs judgement and decision-making, slows reaction times, and affects coordination, increasing the risk of accidents.
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Alcohol-related organ damage
Alcohol can have detrimental effects on the body, and even small amounts are still linked to the development of certain diseases, including cancers. Alcohol affects the whole body, including the liver, brain, pancreas, heart, lungs, gut, immune system, and cardiovascular system.
Brain
Alcohol can affect how the brain looks and works. It can cause the brain's cells to change and even get smaller, resulting in a shrinking of the brain. This can have significant effects on one's ability to think, learn, and remember things. It can also make it harder to control body temperature and movement and can cause drowsiness and disrupted sleep.
Liver
Heavy drinking can take a toll on the liver, leading to inflammation and various problems, including liver disease. Alcohol misuse is also associated with an increased risk of acute respiratory distress syndrome and bacterial pneumonia.
Heart
Binge drinking can disrupt the electrical signals that keep the heart's rhythm steady, and long-term drinking can cause permanent changes, resulting in arrhythmia. Alcohol also causes the heart muscles to stretch and weaken, impacting the heart's ability to pump blood effectively.
Pancreas
Alcohol misuse over time can lead to pancreatitis, which is a dangerous inflammation of the pancreas. Pancreatitis can impair the production of digestive enzymes and affect hormones that regulate blood sugar levels. It can become a chronic condition, increasing the risk of pancreatic cancer and diabetes.
Immune System
Alcohol weakens the body's immune system, making it harder to fight off germs and viruses. Heavy drinkers are more susceptible to illnesses such as pneumonia and tuberculosis. Alcohol can also impact fertility in both men and women and may affect the making of sperm in men.
Bones and Muscles
Long-term alcohol use can affect bone density, leading to thinner bones and an increased risk of fractures. It can also cause muscle weakness, cramping, and atrophy. Heavy drinking increases the risk of muscle wasting and raises the odds of recurrent gout attacks.
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Alcohol's effects on the body
Alcohol is a powerful chemical that affects almost every part of the body, including the brain, bones, heart, liver, pancreas, lungs, and immune system. Drinking alcohol can have both immediate and long-term effects on the body, and the risks increase with the amount consumed.
In the short term, alcohol interferes with the brain's communication pathways, impacting mood, behaviour, clear thinking, and coordination. As the amount of alcohol consumed increases, its effects on the body become more pronounced. For example, drinking 4 to 6 units of alcohol affects judgement and decision-making, leading to reckless and uninhibited behaviour. Consuming 8 to 9 units slows reaction time, impairs speech and vision, and affects coordination. Drinking more than 12 units in a short period can lead to alcohol poisoning, which interferes with the body's automatic functions and can be life-threatening.
Long-term alcohol misuse is associated with an increased risk of various health issues, including acute respiratory distress syndrome, bacterial pneumonia, and respiratory syncytial virus infection. It also increases the risk of myopathy or muscle wasting, fractures, and recurrent gout attacks. Alcohol misuse impairs bone fracture repair and reduces bone density. It can also lead to pancreatitis, a dangerous inflammation of the pancreas that affects the production of digestive enzymes and the regulation of blood sugar levels.
Excessive alcohol consumption is linked to several types of cancer, including oesophageal, liver, breast, colorectal, stomach, bowel, mouth, and throat cancer. It also increases the risk of stroke and peripheral neuropathy, which can cause numbness in the arms and legs, painful burning in the feet, heart arrhythmias, and orthostatic hypotension. Alcohol misuse can also lead to mental health issues, including an increased risk of suicide, and substance abuse, as well as financial and relationship problems.
The effects of alcohol on the body are far-reaching, and reducing alcohol consumption or abstaining from alcohol can lower the associated health risks.
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Frequently asked questions
Alcohol interferes with the brain's communication pathways, affecting mood, behaviour, coordination, and the ability to think clearly. Alcohol also affects the peripheral nervous system.
Excessive alcohol consumption increases the risk of several types of cancer, including head and neck cancer, esophageal cancer, liver cancer, breast cancer, and colorectal cancer. It also increases the risk of acute respiratory distress syndrome, bacterial pneumonia, and muscle wasting.
Alcohol use disorder (AUD) is a common medical condition where an individual cannot stop drinking despite the negative impact on their life and the lives of those around them. AUD can range from mild to severe and is treatable through medication and behavioural therapy.
Symptoms of alcohol withdrawal can include hangovers, cravings, and relief drinking to avoid further withdrawal symptoms.
Excessive alcohol consumption can refer to binge drinking (4 or more drinks for women and 5 or more for men in one sitting), heavy drinking (8 or more drinks for women and 15 or more for men in a week), underage drinking, and drinking during pregnancy.
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