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The relationship between alcohol consumption, liver enzymes and high-density lipoprotein cholesterol
Insights
High alcohol consumption significantly increases high-density lipoprotein (HDL) cholesterol. Quitting alcohol rapidly lowers HDL cholesterol, suggesting alcohol’s role in elevating this heart health marker.
Area of Science:
- Cardiology
- Hepatology
- Clinical Biochemistry
Background:
- High-density lipoprotein (HDL) cholesterol is inversely associated with heart attack risk.
- Alcohol consumption is a known factor influencing HDL cholesterol levels.
Purpose of the Study:
- To investigate the impact of alcohol cessation on HDL cholesterol levels in individuals with high alcohol consumption.
- To explore the relationship between initial HDL cholesterol, triglyceride changes, and HDL reduction post-cessation.
Main Methods:
- Studied HDL cholesterol levels in male alcoholics admitted to a detoxification hospital before and after 4 days of abstinence.
- Correlated HDL cholesterol changes with initial levels, triglyceride changes, and liver enzyme concentrations (SGOT).
Main Results:
- Alcoholics had significantly higher baseline HDL cholesterol (85 mg/dl) compared to the general population.
- HDL cholesterol decreased by an average of 12.5 mg/dl after 4 days of abstinence.
- HDL reduction correlated with initial HDL levels and inversely with triglyceride changes. Abstinence for one month normalized HDL to general population levels.
- Elevated HDL in alcoholics correlated with liver enzyme concentrations, particularly SGOT.
Conclusions:
- Alcohol consumption elevates HDL cholesterol, likely through hepatic microsomal enzyme induction.
- Cessation of high alcohol intake leads to a rapid decrease in HDL cholesterol.
- These findings highlight alcohol's significant influence on HDL cholesterol metabolism and its potential implications for cardiovascular risk assessment in alcoholics.
Abstract:
High-density lipoprotein (HDL) cholesterol concentrations are inversely related to risk of heart attack. Alcohol consumption is a primary factor related to increased HDL concentrations. We investigated HDL cholesterol before and after cessation of high alcohol consumption in alcoholics. Men admitted to an alcohol detoxification hospital had a mean HDL cholesterol level of 85 mg/dl, which is almost twice that found in the general population. After 4 days of treatment, HDL cholesterol levels decreased an average of 12.5 mg/dl. The decrease was directly correlated with the initial HDL cholesterol levels and inversely correlated with the change in triglyceride levels. Alcoholics who abstained for at least 1 month had HDL cholesterol concentrations similar to those of the general population. The increased HDL cholesterol levels in the alcoholics were highly correlated with liver enzyme concentrations, especially SGOT. The results suggest that alcohol increases HDL cholesterol concentrations through hepatic microsomal enzyme induction.