Among a 46-year-old alcoholic with liver damage, which lipid values would you expect to be elevated?

Among a 46-year-old alcoholic with liver damage, which lipid values would you expect to be elevated?

• A. Increased total cholesterol, triglyceride, LDL, and VLDL
• B. Increased total cholesterol and triglyceride, decreased LDL and VLDL
• C. Decreased total cholesterol, triglyceride, LDL, and VLDL
• D. Normal lipid metabolism, unaffected by the alcoholism

Answer: (A)

When the liver is damaged by chronic alcohol use, its ability to handle lipids is disrupted. Ethanol pushes the liver toward producing more fatty acids and triglycerides, and it promotes packaging of those triglycerides into VLDL for export. At the same time, liver injury impairs the clearance and metabolism of lipoproteins, so more of the produced lipoproteins stay in circulation. This combination tends to raise the main lipid fractions in the blood: triglycerides rise due to more VLDL carrying TGs, VLDL levels themselves go up, LDL formed from VLDL increase, and the total cholesterol rises as the sum of these circulating lipoproteins goes up. In this scenario, all of the major lipid classes can be elevated, reflecting increased hepatic VLDL production and reduced clearance from liver damage.

When the liver is damaged by chronic alcohol use, its ability to handle lipids is disrupted. Ethanol pushes the liver toward producing more fatty acids and triglycerides, and it promotes packaging of those triglycerides into VLDL for export. At the same time, liver injury impairs the clearance and metabolism of lipoproteins, so more of the produced lipoproteins stay in circulation. This combination tends to raise the main lipid fractions in the blood: triglycerides rise due to more VLDL carrying TGs, VLDL levels themselves go up, LDL formed from VLDL increase, and the total cholesterol rises as the sum of these circulating lipoproteins goes up. In this scenario, all of the major lipid classes can be elevated, reflecting increased hepatic VLDL production and reduced clearance from liver damage.