Which cholesterol is typically associated with increased heart disease risk when elevated?

Which cholesterol is typically associated with increased heart disease risk when elevated?

• A. HDL
• B. VLDL
• C. Chylomicrons
• D. LDL

Answer: (D)

Elevated LDL cholesterol is associated with increased heart disease risk because LDL particles carry cholesterol into the walls of arteries. There, they can become oxidized and taken up by immune cells, forming foam cells and leading to the development of atherosclerotic plaques. Over time, plaque buildup narrows and stiffens arteries, raising the likelihood of heart attack or stroke. HDL helps remove cholesterol from the arteries, offering some protection, while VLDL and chylomicrons are mainly triglyceride carriers; their elevation signals triglyceride-related risk but is not as consistently linked to long-term heart disease as high LDL.

Elevated LDL cholesterol is associated with increased heart disease risk because LDL particles carry cholesterol into the walls of arteries. There, they can become oxidized and taken up by immune cells, forming foam cells and leading to the development of atherosclerotic plaques. Over time, plaque buildup narrows and stiffens arteries, raising the likelihood of heart attack or stroke. HDL helps remove cholesterol from the arteries, offering some protection, while VLDL and chylomicrons are mainly triglyceride carriers; their elevation signals triglyceride-related risk but is not as consistently linked to long-term heart disease as high LDL.