The longer your body is exposed to LDL cholesterol — even at pretty low levels like 60 — the higher your risk for heart disease, because plaque can start building up in your arteries without you knowing it.
Evidence from Studies
Supporting (3)
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Beyond Early LDL Cholesterol Lowering to Prevent Coronary Atherosclerosis in Familial Hypercholesterolemia.
The study shows that the longer and more LDL cholesterol builds up in the blood, the more plaque forms in arteries, which supports the idea that heart disease risk depends on lifetime cholesterol exposure.
The study shows that the longer and more your LDL cholesterol is high, the higher your heart disease risk, which supports the idea that damage starts early—even at low levels.
The LDL cumulative exposure hypothesis: evidence and practical applications
The study says that the longer and more your LDL cholesterol stays high, the more likely you are to develop heart disease over time — which matches the idea that damage can start even when cholesterol isn’t extremely high.
Contradicting (1)
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The study looked at healthy people on keto diets who had very high LDL cholesterol, but they didn’t have more heart plaque than people with normal LDL. This suggests that very high LDL doesn’t always mean more plaque, at least in the short term.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.