Websites such as eMedicineHealth contain charts indicating the healthy levels of LDL and HDL cholesterol in the bloodstream. Low-density lipoprotein levels should remain below 100 milligrams per deciliter for optimal health, while high-density lipoprotein levels should remain above 60 milligrams per deciliter to protect the heart against disease.
According to the standard charts, total cholesterol should remain below 200 milligrams per deciliter for the best health. Numbers between 200 and 239 indicate a borderline risk, while numbers at or over 240 signify a high risk of heart disease. HDL cholesterol sometimes lessens the aggregation of cholesterol on arterial walls, but LDL cholesterol contributes to that same buildup, as stated by eMedicineHealth.