https://youtu.be/fuj6nxCDBZ0?si=PmPKt61wAUyZAJHO

LDL:

Normal LDL is protective, higher is better.

Unhealthy (oxidized) LDL is damaging, higher is worse.

Oxidized LDL is poorly re-absorbed by the liver & piles up in the bloodstream, hence the convential wisdom that high LDL is dangerous.

Tests:

There's particle size, where large LDL molecules are healthy and tiny ones are bad (iirc).

I think there's also some other test of LDL oxidation in particular.

Heart Disease:

If you're worried about heart disease the gold standard is a coronary artery calcium scan. They use an X-ray to look for buildup of calcium in the arteries around the heart - looking for disease directly rather than just some statistically associated blood marker.

Diet:

Carnivore diet should reverse arterial blockage, particularly if you're eating foods which are high in vitamin K (eg egg yolk, caviar, I think liver is decent also).