LDL (specifically VLDL or any form less than 70nm) is the primary causal factor in the development of CVD. HDL doesn't pass through the endothelial barrier and participate in CVD, it helps to transport cholesterol back to the liver and lowers total LDL levels.
Too much LDL, and more specifically VLDL, LDL fragments, and small electronegative LDL are the driving forces of CVD. If you don't control your LDL you're rolling the dice on having godlike genetics, because if you don't.... you're gonna end up with CVD.
Here's some really long but interesting reading on LDL and CVD:
https://academic.oup.com/eurheartj/a...4/2313/5735221
Belva, have you looked into PCSK9 inhibitors or Bile Acid Resins? PCSK9's are the new statin.... so far they look to have way less side effects than statins and are highly tolerable. They might have long term negative effects that we haven't seen yet, but so far so good, really expensive right now though and not covered by many medical plans.
Bile acid resins on the other hand have 0 systematic side effects, ask your Doctor about them, I'm trying to find where I can buy some here in Germany at the moment without a prescription. They lower LDL and raise HDL, only problem is you can't take them around food / other supplements because they will bind to them and waste them.
Edited in: LDL and HDL are both really important in determining your risk of further CVD development, but there are lots of things you can do which can slow and even reverse CVD, I'll list a couple of them here for you.
Omega3: Supplementation reduces sterile inflammation of the arterial wall preventing further development of CVD. Supplementation leads to reduced triglyceride and c reactive protein levels. Very important.
CoQ10: Promotes NO dependent vasodialation and protects LDL from oxidization(LDL is the primary carrier of Ubiquinol, the good version of CoQ10). Oxidized LDL merges with the arterial wall and begins the process of necrosis, eventually leading to a thrombus, and becoming a clot.
Vitamin K2: Reduces arterial calcification and increases vascular flexibility, reducing rate of cardio vascular incidence.