International A Level Biology / Cardiovascular health and risk
Blood cholesterol, HDLs and LDLs revision notes
Edexcel International A Level Biology (YBI11), chapter 3: Cardiovascular health and risk, specification point 1.18. Part of the full course.
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Cholesterol travels in the blood inside lipoproteins. LDL carries it to body cells and can increase cardiovascular disease risk, while HDL carries it back to the liver for removal.