Effects of alcohol on liver function – To the best of our knowledge, this study provides the most current, detailed data on the association of liver enzymes with graded levels of alcohol intake in a very large (most likely the largest) representative sample of the U.S.
Population. By combining data collected by NHANES over the last 10 years on over 20,000 adults, quantitative estimates of the relationship between alcohol intake and multiple liver enzymes could be calculated with a very high level of sensitivity to graded changes in alcohol intake of the US population.
This study demonstrates that even very modest levels of alcohol intake can significantly affect liver enzymes and the most sensitive measure of alcohol intake is the enzyme GGT which is potentiated by alcohol intake as low as 7–14 g/day. Our data present both linear and curvilinear (quadratic) equations (when the latter are significant) that can be used to assess impact of alcohol on liver enzymes.
- The linear component of both sets of equations have the same direction, but the curvilinear equations have the quadratic element which modifies the direction and/or magnitude of change as alcohol intake increases.
- For example, both the linear elements of ALP (in both linear and curvilinear equations) are all negative, but the curvilinear component is positive which indicates as alcohol intake increases further the magnitude of the drop in ALP decreases.
While the linear equations are useful, when curvilinear equations were significant these will provide a better fit of the relationship of alcohol intake with liver enzymes. Excessive alcohol consumption can cause liver diseases including fatty liver, hepatitis and cirrhosis,
Since alcohol is mainly metabolized by the liver, it is a primary site of alcohol-induced adverse health effects. Alcohol consumers had significantly higher AST and GGT activities compared to non-consumers confirming previous findings demonstrating that alcohol intake is associated with increased hepatic enzyme activities,
Changes in liver enzymes activities are biomarkers of liver damage and are routinely assessed for diagnostic purposes and as part of physical examinations, Abnormal activities of liver enzymes are also strong predictors of mortality associated with liver disease, cardiovascular disease, diabetes and cancer,
- However, the activities of liver enzymes AST and GGT in alcohol consumers in our study did not approach levels that would be considered clinically abnormal,
- It may be possible that the changes in the activities of liver enzyme within the normal range are not benign and additional research is required to determine if they are associated with subsequent development of liver disease.
The association between alcohol consumption and GGT has previously been demonstrated and is a widely used index of excessive alcohol intake, Consistent with the literature, in our study serum GGT appears to be the most sensitive measure of alcohol consumption as assessed by 24-h recall, as well as alcohol questionnaire, with respect to the difference between alcohol consumers and non-consumers.
- Our results support previous findings that GGT is a more sensitive indicator of moderate levels of alcohol consumption than AST and ALT,
- Elevated serum GGT has also been shown to be associated with metabolic syndrome and is considered to be the most sensitive indicator of liver disease,
- Previous studies have suggested the presence of a graded dose–response relationship between alcohol intake and risk of liver disease and that GGT induction can be initiated at low doses of alcohol intake,
In the present study we noted a gradual increase in liver enzyme activities with increasing alcohol dose with the largest dose-dependent increase noted for GGT activity. This is in agreement with studies reporting a gradual effect of increasing dose of alcohol on liver enzyme induction,
The health effects of alcohol also vary across population groups. A negative dose response relationship between consumption of alcohol and prevalence of suboptimal health was reported in a cross sectional survey from Spain while a curvilinear relationship (inverse J shaped) was observed between alcohol intake and health related quality of life in Dutch population,
Intoxication and liquor consumption were associated with poor mental and physical health while moderate intake were associated with better health in another cross sectional study conducted in New York State, Future studies, including epidemiological investigations and clinical trials, should be conducted to investigate the relationship between intake of various levels of alcohol, multiple health outcomes and all-cause mortality.
The factors responsible for the beneficial effects of moderate intake of alcohol are uncertain, although the adverse effects of higher doses of alcohol on various organ systems have been well documented. Increased HDL, apolipoprtotein A-1 and adiponectin levels, and reduction of LDL concentration, blood pressure, coronary blood flow, platelet aggregation, fibrinogen levels and inflammation resulting from moderate alcohol intake have been suggested as mechanisms that could explain the beneficial effect of moderate alcohol intake,
One additional mechanism that may explain some of the beneficial effects of lower doses of alcohol could be its effects on the liver. The liver is the organ primarily responsible for detoxifying a wide variety of metabolic and environmental toxins so consumption of low doses of alcohol could, by potentiation of key liver enzyme systems such as cytochrome P450, enhance its ability to remove toxic compounds from the body.
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Can one night of drinking cause elevated liver enzymes?
Next Looking to Longer-Term Impacts on Liver – The researchers also found that even a single episode of binge drinking elevated the levels of the liver enzyme CYP2E1, which metabolizes alcohol into toxic by-products that can cause oxidative damage and other forms of tissue injury.
- After seven weeks of binging, there was even more CYPE1 produced in response to binge drinking.
- Alcohol dehydrogenase, the major alcohol-metabolizing enzyme, was also more abundant in binge-drinking mice.
- These results suggest that repeated binging increases the levels of these enzymes, which could lead to greater cellular damage.
We sometimes think of alcoholic liver damage as occurring after years of heavy drinking. However, we found that even a short period of what in humans would be considered excessive drinking resulted in liver dysfunction. Frederic “Woody” Hopf, PhD Associate Adjunct Professor of Neurology Repeated binge drinking also increased activation of a gene that immune cells use to make an inflammatory cytokine protein called IL-1B, which is implicated in the liver inflammation seen in alcohol-induced liver disease.
The scientists did not detect other alterations in the inflammatory system that are known to accompany later stages of liver cell damage. “It’s not yet clear whether the changes to the liver associated with binge drinking are completely reversible. It could even be that these changes sensitize and prime the liver, so that a subsequent return to binge drinking after long abstinence will more easily cause harm,” Hopf said.
“Those are experiments we are planning to do next.” For several decades, alcohol researchers have regarded mice as a validated model for learning about mechanisms that drive excessive drinking in humans, according to Hopf. In the newly published study, binge-drinking mice could drink 20 percent alcohol on just three nights per week.
How much alcohol do you have to drink to affect liver?
How Alcohol Affects The Liver – The liver breaks down and filters out harmful substances in the blood and manufactures the proteins, enzymes, and hormones the body uses to ward off infections. It also converts vitamins, nutrients, and medicines into substances that our bodies can use.
- The liver is also responsible for cleaning our blood, producing bile for digestion, and storing glycogen for energy.
- The liver processes over 90% of consumed alcohol.
- The rest exits the body via urine, sweat, and breathing.
- It takes the body approximately an hour to process 1 alcoholic beverage.
- This time frame increases with each drink.
The higher someone’s blood alcohol content, the longer it takes to process alcohol. The liver can only process a certain amount of alcohol at a time. When someone has too much to drink, the alcohol left unprocessed by the liver circulates through the bloodstream.
The alcohol in the blood starts affecting the heart and brain, which is how people become intoxicated. Chronic alcohol abuse causes destruction of liver cells, which results in scarring of the liver (cirrhosis), alcoholic hepatitis, and cellular mutation that may lead to liver cancer. These conditions usually progress from fatty liver to alcoholic hepatitis to cirrhosis, although heavy drinkers may develop alcoholic cirrhosis without first developing hepatitis.
Per University Health Network, a safe amount of alcohol depends on a person’s weight, size, and whether they are male or female. Women absorb more alcohol from each drink in comparison to males, so they are at greater risk of liver damage. Consuming 2 to 3 alcoholic drinks daily can harm one’s liver.
- Furthermore, binge drinking (drinking 4 or 5 drinks in a row) can also result in liver damage.
- Mixing alcohol with other medications can also be very dangerous for your liver.
- Never take alcohol and medication simultaneously without speaking with your physician first.
- When combined, certain medications (such as Acetaminophen) can lead to severe damage to your liver.
Other medications that are dangerous to combine with alcohol include Antibiotics, Antidepressants, Sedatives, and Painkillers.
How long should I abstain from alcohol before a liver function test?
Gamma-glutamyl transferase test – A gamma-glutamyl transferase (GGT) test helps diagnose liver disease. GGT is an enzyme in the liver that helps it work effectively. A person may need to avoid all eating and drinking for 8 hours before the test, as well as avoid drinking alcohol and taking some prescription medications.
Can ALT be high after a night of drinking?
Discussion – In this large cohort study, we found that in individuals with elevated ALT levels, even small amounts of alcohol intake were associated with increased liver-related mortality and that a moderate amount of alcohol intake was associated with increased risk of all-cause mortality.
- This association was significantly different in subjects with normal ALT levels, in whom alcohol intake was not associated with increased liver-related or all-cause mortality.
- Our data provides support for recommending complete abstinence from alcohol in subjects with elevated ALT levels, as even a small amount of alcohol intake may be harmful to them.
Alcohol is a well-established liver toxicant and carcinogen, Even light and moderate alcohol intake can increase the risk of liver disease and of progression to advanced liver disease in individuals with liver disease, Current evidence and practice guidelines recommend complete abstinence for patients with alcohol-associated liver disease and chronic viral hepatitis,
- However, the health effects of light to moderate alcohol intake in patients with other liver diseases are not well established.
- In our data, we demonstrated the synergistic effect of alcohol intake and hepatic injury as measured by elevated serum ALT levels in individuals without alcohol-associated liver disease or chronic viral hepatitis.
This suggests that individuals with elevated ALT levels should be advised total abstinence from alcohol, even if they are free of alcohol-associated liver disease or chronic viral hepatitis. In this study, light to moderate alcohol intake was associated with lower risk of all-cause mortality in subjects with normal ALT levels, while moderate alcohol intake was associated with increased risk of all-cause mortality in subjects with elevated ALT levels.
The effect of light to moderate alcohol intake on health may thus differ depending on ALT levels. This may also explain some of the heterogeneity in the effects of small amounts of alcohol intake on health endpoints in previous studies, There are some limitations to this study. The exact causes of elevated ALT levels in our study participants were unknown.
The most common causes of elevated ALT levels in subjects undergoing health screening exams are alcohol intake, viral hepatitis, and NAFLD, Since we excluded participants with heavy alcohol intake, chronic viral hepatitis, and rare forms of chronic liver disease (autoimmune, metabolic, or toxic liver disease), we expect NAFLD to be the cause of elevated ALT levels in most of our study participants.
Furthermore, compared to participants without elevated ALT levels in our study, those with elevated ALT levels had a higher average BMI and a higher prevalence of diabetes, hypertension, and dyslipidemia, which are all key features of NAFLD. Unfortunately, NAFLD can only be identified when there is evidence of hepatic steatosis by histological or radiological evaluation in the absence of heavy alcohol intake and secondary causes for steatosis, and we lacked this information.
Hence, participants with elevated ALT levels in this study do not exclusively represent subjects with NAFLD. In this study, we lacked follow-up ALT measurements and we could not determine whether the elevation in ALT levels was transient or persistent.
Further studies with multiple ALT measurements are needed to ascertain whether light to moderate alcohol intake is harmful only for those with persistently elevated ALT levels or even for those with transient or intermittent elevated ALT levels. Information on alcohol intake was collected by self-administered questionnaires and was subject to measurement error and abstainer bias,
Since the questionnaire of the NHIS-NSC only asked current alcohol intake, we could not distinguish between never drinkers and former drinkers. Since some former drinkers may have stopped drinking because of health issues, including never drinkers and former drinkers in the reference category would tend to decrease the observed association of alcohol intake with mortality.
- In addition, we did not have information on the type or patterns of alcohol use, or on the change of alcohol use over time,
- Our cohort was composed of Korean men and women participating in health screening exams.
- The effects of alcohol may differ by race/ethnicity and genetic predisposition,
- Hence, generalizability to other ethnic groups warrants further evaluation.
Also, we cannot exclude the possibility of unmeasured or unknown confounding factors that were not controlled in the study. In this study, we used elevated ALT levels as the only indicator of liver injury. Further studies combining other biomarkers with ALT levels are needed to better identify and to quantify liver injury or liver disease.
Can ALT and AST be high after drinking?
INTRODUCTION – High alcohol consumption is one of the most common causes of liver disease. However, high alcohol consumption as a cause for abnormal liver test results is often not evident and may even be denied. A readily obtainable blood test to reveal whether alcohol is the likely cause would be valuable. Several markers for high alcohol consumption per se have been studied e.g. carbohydrate deficient transferrin (CDT), gamma glutamyl transferase (GGT) and aspartate aminotransferase (AST). Most have fairly low sensitivities and specificities ( Conigrave et al,, 2002 ). The use of test combinations significantly improves the information received with single serum enzyme determinations. An elevated serum AST in relation to serum ALT (alanine aminotransferase) has been proposed as an indicator that alcohol has induced organ damage. Thus, when AST/ALT ratio is >1.5, this is considered as highly suggestive that alcohol is the cause of the patient’s liver injury ( Correia et al,, 1981 ; Salaspuro, 1987). However, many patients who doubtless consume high amounts of alcohol and indeed are alcohol-dependent and display elevated serum aminotransferase levels do not show a high AST/ALT ratio. This suggests that additional factors lead to the high AST/ALT ratio seen in some patients. One such factor may be the severity of the liver disease. To test this hypothesis we compared the AST/ALT ratio in three groups of patients with high alcohol consumption: patients hospitalized for treatment of alcohol withdrawal syndromes, patients hospitalized in somatic (medical or surgical) wards for non-liver related causes, (both of which may have contained patients with a mild degree of liver damage) and patients hospitalized with complications from alcoholic liver cirrhosis.
How long does heavy drinking cause liver damage?
How long do you have to drink before liver damage? – People with serious liver damage have usually been drinking for 20 or more years. But complications can develop after 5 to 10 years of heavy drinking. Again, this can be highly variable between individuals and is likely genetic.
Is Alt 90 need for concern?
Box 1. Risk groups for hepatitis C 8 – 10 –
Past and present hard drug users, in particular injecting drug users Immigrants from highly endemic countries (prevalence >10%) Recipients of blood (-products) before 1992 Travellers whose skin was pierced in endemic countries (prevalence >2%) Professionals at occupational risk HIV-infected men who have sex with men
Even though identification and testing of these risk groups can improve case finding, this will lead to the detection of only a small sample of infected individuals. A recent survey showed that a national HCV campaign in the Netherlands is expected to detect an additional 500 HCV patients, still leaving the majority of the HCV-infected population undiagnosed.11 Therefore, additional case finding strategies in clinical practice are required. The alanine aminotransferase (ALT) test is the most frequently used test for liver disease in primary care. An ALT test result of >100 IU/l is a clear indicator of serious liver disease, but a mildly elevated ALT result (30–100 IU/l) is often ascribed to the use of medication (for example statins) or alcohol, obesity, or, for lower ALT levels (<50 IU/l), considered as part of the normal distribution of test results. As a consequence, abnormal ALT levels are frequently accepted without adequate diagnostic follow-up.12 Several international studies have reported a substantially increased risk of viral hepatitis in patients with mildly elevated ALT levels.13 – 17 To explore if and how mild ALT elevation found in daily primary care practice can be used to detect hidden HCV and HBV infection, the prevalence of viral hepatitis and a cut-off point above which a substantially increased risk of viral hepatitis is present, need to be determined.
Does 3 weeks no alcohol affect liver?
Of all your body’s organs, your liver takes the biggest hit when it comes to alcohol. Even if your relationship with drinking consists of occasional social drinking with friends or occasionally over-indulging in wine and cocktails during the holiday season, alcohol can still leave its mark.
And it’s a mark that can be hard to reverse. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy That’s why many of us wonder if a month of avoiding drinking is enough to “reset” your liver back to normal.
It’s true that taking a break from alcohol for any amount of time will be beneficial overall, with some research showing that liver function begins to improve in as little as two to three weeks. But a full detox is needed for the most benefit, and how much time that takes depends on a variety of personal factors.
Do all heavy drinkers get liver damage?
Do all alcoholics get alcoholic hepatitis and eventually cirrhosis? – No. Some alcoholics may suffer seriously from the many physical and psychological symptoms of alcoholism, but escape serious liver damage. Alcoholic cirrhosis is found among alcoholics about 10 to 25 percent of the time.
How long after a night of drinking do liver enzymes return to normal?
How ARLD is treated – There’s currently no specific medical treatment for ARLD. The main treatment is to stop drinking, preferably for the rest of your life. This reduces the risk of further damage to your liver and gives it the best chance of recovering.
- If a person is dependent on alcohol, stopping drinking can be very difficult.
- However, support, advice and medical treatment may be available through local alcohol support services,
- A liver transplant may be required in severe cases where the liver has stopped functioning and doesn’t improve when you stop drinking alcohol.
You’ll only be considered for a liver transplant if you’ve developed complications of cirrhosis, despite having stopped drinking. All liver transplant units require a person to not drink alcohol while awaiting the transplant, and for the rest of their life.
Can ALT be high after a night of drinking?
Discussion – In this large cohort study, we found that in individuals with elevated ALT levels, even small amounts of alcohol intake were associated with increased liver-related mortality and that a moderate amount of alcohol intake was associated with increased risk of all-cause mortality.
- This association was significantly different in subjects with normal ALT levels, in whom alcohol intake was not associated with increased liver-related or all-cause mortality.
- Our data provides support for recommending complete abstinence from alcohol in subjects with elevated ALT levels, as even a small amount of alcohol intake may be harmful to them.
Alcohol is a well-established liver toxicant and carcinogen, Even light and moderate alcohol intake can increase the risk of liver disease and of progression to advanced liver disease in individuals with liver disease, Current evidence and practice guidelines recommend complete abstinence for patients with alcohol-associated liver disease and chronic viral hepatitis,
However, the health effects of light to moderate alcohol intake in patients with other liver diseases are not well established. In our data, we demonstrated the synergistic effect of alcohol intake and hepatic injury as measured by elevated serum ALT levels in individuals without alcohol-associated liver disease or chronic viral hepatitis.
This suggests that individuals with elevated ALT levels should be advised total abstinence from alcohol, even if they are free of alcohol-associated liver disease or chronic viral hepatitis. In this study, light to moderate alcohol intake was associated with lower risk of all-cause mortality in subjects with normal ALT levels, while moderate alcohol intake was associated with increased risk of all-cause mortality in subjects with elevated ALT levels.
- The effect of light to moderate alcohol intake on health may thus differ depending on ALT levels.
- This may also explain some of the heterogeneity in the effects of small amounts of alcohol intake on health endpoints in previous studies,
- There are some limitations to this study.
- The exact causes of elevated ALT levels in our study participants were unknown.
The most common causes of elevated ALT levels in subjects undergoing health screening exams are alcohol intake, viral hepatitis, and NAFLD, Since we excluded participants with heavy alcohol intake, chronic viral hepatitis, and rare forms of chronic liver disease (autoimmune, metabolic, or toxic liver disease), we expect NAFLD to be the cause of elevated ALT levels in most of our study participants.
- Furthermore, compared to participants without elevated ALT levels in our study, those with elevated ALT levels had a higher average BMI and a higher prevalence of diabetes, hypertension, and dyslipidemia, which are all key features of NAFLD.
- Unfortunately, NAFLD can only be identified when there is evidence of hepatic steatosis by histological or radiological evaluation in the absence of heavy alcohol intake and secondary causes for steatosis, and we lacked this information.
Hence, participants with elevated ALT levels in this study do not exclusively represent subjects with NAFLD. In this study, we lacked follow-up ALT measurements and we could not determine whether the elevation in ALT levels was transient or persistent.
- Further studies with multiple ALT measurements are needed to ascertain whether light to moderate alcohol intake is harmful only for those with persistently elevated ALT levels or even for those with transient or intermittent elevated ALT levels.
- Information on alcohol intake was collected by self-administered questionnaires and was subject to measurement error and abstainer bias,
Since the questionnaire of the NHIS-NSC only asked current alcohol intake, we could not distinguish between never drinkers and former drinkers. Since some former drinkers may have stopped drinking because of health issues, including never drinkers and former drinkers in the reference category would tend to decrease the observed association of alcohol intake with mortality.
In addition, we did not have information on the type or patterns of alcohol use, or on the change of alcohol use over time, Our cohort was composed of Korean men and women participating in health screening exams. The effects of alcohol may differ by race/ethnicity and genetic predisposition, Hence, generalizability to other ethnic groups warrants further evaluation.
Also, we cannot exclude the possibility of unmeasured or unknown confounding factors that were not controlled in the study. In this study, we used elevated ALT levels as the only indicator of liver injury. Further studies combining other biomarkers with ALT levels are needed to better identify and to quantify liver injury or liver disease.
How quickly can liver enzymes change?
How to treat high liver enzymes? – The treatment method is based on the underlying cause of elevated liver enzymes. The average time it takes for liver enzyme levels to return to normal naturally is about two to four weeks. You may need to change your medication, stop taking a supplement, or reduce your drinking if you drink, but a treatment plan won’t be necessary.
Your doctor may need to treat your liver enzyme levels if they rise and remain elevated. They may advise imaging scans or blood tests to get a better look at your liver. Another option would be to ask for a liver biopsy. Your doctor may refer you to an expert based on your test results. Ultimately, your treatment will be based on your diagnosis.
Individuals who are concerned about their liver enzyme levels may also consider altering their lifestyles at home by taking steps like:
Cutting back on or stopping drinking alcohol Drinking coffee (One cup of coffee per day reduces the risk of dying from chronic liver disease by 15%; thus, drinking coffee can be beneficial.) Being careful about the drugs and dietary supplements you consume Attempting to eat more foods that are good for your liver Maintaining a healthy weight
Can your liver swell from one night of drinking?
Is alcoholic hepatitis different from “fatty liver?” – Yes. Anyone who drinks alcohol heavily, even for a few days, will develop a condition in which liver cells are swollen with fat globules and water. This condition is called “fatty liver.” It also may result from:
Diabetes Obesity Certain drugs Severe protein malnutrition
Fatty liver caused by alcohol is reversible when one stops drinking alcohol.