vagfilm
these studies are correlational studies, so not causal, but we're 100% confident that cholesterol damages the endothelium and is among the root causes of atherosclerosis. as it also correlate with weight/bmi it's difficult to separate the amount of impact of contributing factors.
in any case, that's why the general advice is to watch cholesterol carefully,
if the body is an industry, and you cripple the roads / infrastructure, the industry will lag in all areas, impact will be systemic, both new construction AND repair.