No need to worry, we are all in the process of dying, so the correct answer is just to ignore everything that isn't either: something that strikes you as incredibly obvious (don't drink poison), recognized in its field of experts (high cholesterol is bad for you), established knowledge, or not too inconvenient.
> recognized in its field of experts (high cholesterol is bad for you)
Public service announcement: this one is controversial. IMHO it's wrong, based on bad science and agendas, and harmful because it deters people from nutritious foods. I recommend everyone do their own reading to form their own opinion.
It's sad how political food and nutrition is because it causes misinformation and malnutrition.
My rudimentary understanding: chronic high blood sugar causes irritation of blood vessels; irritated blood vessels attempt to protect themselves by producing a protective layer (excretion?); cholesterol sticks much more readily to this‚ causing creation of plaques. So, cholesterol is "fine" if you avoid high blood sugar.