NBEO Biochemistry Practice Exam

The minimum level of high-density lipoprotein (HDL) cholesterol that is generally recommended to be maintained is 40 mg/dL. HDL is often referred to as "good" cholesterol because it plays a crucial role in transporting cholesterol away from the arteries and back to the liver, where it can be processed and eliminated from the body. Low levels of HDL cholesterol are associated with an increased risk of cardiovascular disease, as they are less effective at removing excess cholesterol from the bloodstream. A level of 40 mg/dL is considered a threshold below which individuals may be at higher risk of heart disease. It's important to note that optimizing HDL levels can be a component of a broader strategy for cardiovascular health, which also includes managing other risk factors such as LDL cholesterol levels, triglycerides, blood pressure, and lifestyle choices. Maintaining higher levels of HDL (such as 60 mg/dL or above) may be associated with additional cardiovascular protection, but the minimum recommendation for maintaining adequate protection against heart disease is set at 40 mg/dL for men and 50 mg/dL for women.