Cholesterol: a fat molecule manufactured by every animal cell, a building block of each cell membrane (enables membrane fluidity/movement without tearing), is fundamental to survival every animal cell, poorly absorbed food.
Lipoproteins (proteins which transport all fats in water outside cells) is the correct issue for artery disease (e.g. Ldl
=700 nmol/l, HDL
=45 µmol/l). Chol ?$, but misleading.