III. CAUSES OF HYPERCHOLESTEROLEMIA
Renal disease can also affect cholesterol levels. A form of glomerulonephritis causes marked loss of protein in the urine, diffuse edema, and hypercholesterolemia. Biliary cirrhosis with its prolonged obstructive jaundice causes marked elevation in serum cholesterol. Other causes include pancreatitis, monoclonal gammopathy, and porphyria.