Cholesterol is good. A low cholesterol diet ages you more quickly.

Yes it can clog your arteries, but this is caused by the presence of chronic inflammation. It's not caused by the cholesterol. The cholesterol is just doing it's job to repair the damage to the artery wall.

But if the source of that inflamation is chronic because of a shitty diet, the cholesterol continues to build up on the inflammation site until it becomes a problem.

Eliminate sources of inflamation: seed oils, grains, alcohol.

Keep the good cholesterol from butter and eggs.