ocr: Resident and Staff PhysicaM Patiant Education Chart How Cholesterol Levels Affect the Arteries Cholesterol is a waxy substance with important body functions, but too much cholesterol circulating in the blood is a health risk. Blood cholesterol levels: Desirable--less than 200 mg/dl Borderline-highigh--200-239 mg/dl High--240 mg/dl and greater Cholesterol carried by low-density lipoprotien (LDL) can cause plaque to form on walls of arteries. Unattected artery Reprinted with permissionfrom Resident and: Staff Physician (c)1991-92, 19931 by Romaine Pierson Publishers, Inc.